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HJ 168-2010 English PDF

HJ 168-2010_English: PDF (HJ168-2010)
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HJ 168-2010EnglishRFQ ASK 6 days [Need to translate] Enviromental monitoring. Technical guideline on drawing and revising analytical method standards Obsolete HJ 168-2010
HJ 168-2020English899 Add to Cart 6 days [Need to translate] (Technical Guidelines for the Establishment of Environmental Monitoring Analysis Method Standards) Valid HJ 168-2020


BASIC DATA
Standard ID HJ 168-2010 (HJ168-2010)
Description (Translated English) Enviromental monitoring. Technical guideline on drawing and revising analytical method standards
Sector / Industry Environmental Protection Industry Standard
Classification of Chinese Standard Z00
Classification of International Standard 13.020
Word Count Estimation 34,349
Date of Issue 2010-02-25
Date of Implementation 2010-05-01
Older Standard (superseded by this standard) HJ/T 168-2004
Quoted Standard GB/T 6379; GB/T 6682; GB/T 7714; GB/T 8170; HJ 565; JJF 1059
Drafting Organization Chinese Academy of Environmental Sciences
Administrative Organization Ministry of Environment Protection
Regulation (derived from) Department of Environmental Protection Notice No. 25 of 2010
Summary This standard specifies the environmental monitoring and analysis methods and amend standards and basic requirements of the work program, and the standard text and the relevant technical documentation made ??a requirement. This standard applies to environmental monitoring and analysis methods and revision of standards work.

Standards related to: HJ 168-2010

HJ 168-2010
Enviromental monitoring.Technical guideline on drawing and revising analytical method standards
National Environmental Protection Standard of the People's Republic
Replace HJ/T 168-2004
Environmental monitoring analysis method standard revision
Technical guidelines
Environmental monitoring-Technical guideline on drawing and revising
Analytical method
Published on.2010-02-25
2010-05-01 Implementation
Ministry of Environmental Protection released
Ministry of Environmental Protection
announcement
No. 25 of.2010
In order to implement the "Environmental Protection Law of the People's Republic of China" and ensure the quality of environmental monitoring and regulation, the environmental monitoring points are now approved.
The Technical Guidelines for the Standardization of Methods and Standards for Revision are national environmental protection standards and are issued.
The standard name and number are as follows.
The standard was implemented on May 1,.2010 and published by the China Environmental Science Press. The standard content can be found on the website of the Ministry of Environmental Protection.
From the date of implementation of the above standards, the following standards are abolished.
Technical guidelines for the development of standards for environmental monitoring and analysis methods (HJ/T 168-2004).
Special announcement.
February 25,.2010
Content
Foreword..iv
1 Scope..1
2 Normative references..1
3 Terms and Definitions.1
4 working procedures..3
5 basic requirements..4
6 standard structural elements..5
7 Main technical content 5
8 Method Verification 11
Appendix A (Normative Appendix) Method for determining the characteristics of the method.12
Appendix B (informative appendix) Content requirements for the opening of the argumentation report.17
Appendix C (informative) Content requirements for standard preparation instructions.20
Appendix D (informative) Content requirements of the method validation report 24
Iv
Foreword
To implement the "Environmental Protection Law of the People's Republic of China", "Water Pollution Prevention and Control Law of the People's Republic of China"
Dyeing Prevention and Control Law, Law of the People's Republic of China on the Prevention and Control of Environmental Pollution by Solid Wastes, Implementing the National Environmental Protection Standards Revision and Management Office
Law, standardize the standardization and revision of environmental monitoring and analysis methods, ensure the quality of work, improve work efficiency, and develop this standard.
This standard is a revision of the Technical Guidelines for the Development of Standards for Environmental Monitoring and Analysis Methods (HJ/T 168-2004).
This standard was first published in.2004. The original standard drafting unit was China Environmental Monitoring Station and Nanjing Environmental Monitoring Center Station. this time
For the first revision.
This revision mainly focuses on the revision and revision of the environmental monitoring and analysis method standards, basic requirements, and the main standards of environmental monitoring and analysis methods.
The technical content was re-made with technical content, as well as method validation, standard opening report and standard preparation instructions.
From the date of implementation of this standard, the Technical Guidelines for the Standardization of Environmental Monitoring and Analysis Methods (HJ/T 168-2004) shall be abolished.
Appendix A of this standard is a normative appendix, and Appendix B to Appendix D are informative appendices.
This standard was formulated by the Science and Technology Standards Department of the Ministry of Environmental Protection.
This standard is mainly drafted by. China Academy of Environmental Sciences, National Environmental Analysis and Testing Center and Jiangsu Environmental Monitoring Center.
This standard was approved by the Ministry of Environmental Protection on February 25,.2010.
This standard has been implemented since May 1,.2010.
This standard is explained by the Ministry of Environmental Protection.
Technical Guidelines for Standardization and Revision of Environmental Monitoring and Analysis Methods
1 Scope of application
This standard specifies the working procedures and basic requirements for the standardization and revision of environmental monitoring and analysis methods, and the standard texts and related technical documents.
Made a request.
This standard applies to the revision and revision of environmental monitoring and analysis method standards.
2 Normative references
The contents of this standard refer to the following documents or their terms. For undated references, the valid version applies to this standard.
GB/T 6379 Accuracy of measurement methods and results (correctness and precision)
GB/T 6682 Analytical laboratory water specifications and test methods (ISO 3696.1987, MOD)
GB/T 7714 post-reference reference description rules
GB/T 8170 Numerical Rounding Rules and Representation and Determination of Limit Values
HJ 565 Environmental Protection Standards Compilation and Publication Technical Guide
JJF 1059 Measurement Uncertainty Evaluation and Representation
Measures for the Administration of the Revision and Revision of National Environmental Protection Standards (Announcement of the State Environmental Protection Administration, No. 41 of.2006)
3 Terms and definitions
The following terms and definitions apply to this standard.
3.1
Method detection limit
The lowest or minimum amount of the substance to be tested can be qualitatively detected from the sample within a given confidence level using a particular analytical method.
3.2
Minimum quantitative detection limit
Under the premise that the limit error can meet the predetermined requirements, the minimum quantitative detection limit of the substance to be tested can be accurately and quantitatively determined by a specific method.
3.3
Maximum quantitative detection limit
Under the premise that the limit error can meet the predetermined requirements, the specific quantitative detection limit of the substance to be tested can be accurately and quantitatively determined by a specific method.
3.4
Determination range
The range between the lower limit of measurement and the upper limit of measurement.
3.5
Precision precision
The degree of agreement between independent test results under specified conditions.
3.6
Repetitive repeatability
In the same laboratory, using the same method, the same instrument uses the same instrument and equipment for the same object, in the same test
The degree of agreement between test results independent of each other under test conditions.
3.7
Repeatability limit
A value, under repetitive conditions, the probability that the absolute difference between the two test results does not exceed this number is 95%.
Note. The repeatability limit symbol is r.
3.8
Reproducibility
Also known as "reproducibility", it means that in the same laboratory, the same instrument is used by the same operator by the same method.
The degree of agreement between the test results and the equipment under the same test conditions.
3.9
Reproducibility limit
A value, under reproducibility conditions, the probability that the absolute difference between the two test results does not exceed this number is 95%.
Note. The reproducibility limit symbol is R.
3.10
Accuracy
The degree of agreement between the test results and the accepted reference values.
3.11
Uncertainty
A parameter that reasonably imparts dispersibility to the measured value, associated with the measurement.
Note 1. This parameter can be the standard deviation or its multiple, or the half width of the confidence interval.
Note 2. Uncertainty consists of multiple components, and each component is evaluated for its standard uncertainty. The assessment methods are divided into two categories. A and B. Class A assessment is used
The statistical analysis method of the observation column is characterized by the experimental standard deviation; the B-class evaluation uses other methods different from the A-class to estimate the standard deviation table.
Sign.
Note 3. The measurement results should be understood as the best estimate to be measured, and all uncertainty components are contributed to the dispersion, including those caused by system effects.
Component.
3.12
Laboratory sample
Samples sent to the laboratory for testing.
3.13
Test sample
A sample prepared from a laboratory sample and from which a sample is taken.
3.14
Sample test portion
Obtained from the sample (if the sample is the same as the laboratory sample, it is taken from the laboratory sample) and used for testing or observation
A certain amount of material.
3.15
Blank test blank test
Refers to the test of the sample containing no substance to be tested using the same procedure as the actual sample. The corresponding sample is called a blank sample, Jane
Call it blank.
3.16
Calibration calibration
Under specified conditions, in order to determine the value of the measuring instrument or measuring system or the value of the physical measuring instrument or standard substance and the corresponding
A set of operations that measure the relationship between known values.
4 working procedures
The standardization and revision of environmental monitoring and analysis methods shall be carried out in accordance with the procedures stipulated in the Measures for the Administration of the Revision and Work of the National Environmental Protection Standards.
(see picture 1).
Standard management department issues standard revision plan
The standard preparation team conducts investigations on various existing analytical methods and monitoring requirements for target pollutants.
Standards preparation team prepares the opening statement and draft standard
The standard preparation team determines and improves the technical content of the draft standard through experiments.
The standard editor-in-chief selects the verification laboratory as required, and organizes the method verification work.
Standards preparation team prepares draft standards and preparation instructions
Form an exposure draft
Standard management department organization for comments
Standard compilation group summary processing opinions
Standards compilation group revised draft standard and preparation instructions
Form a draft for review
Standard management organization technical review
Standards compilation group revised draft standard and preparation instructions
Form a draft
The standard preparation team summarizes and processes the verification data to form a verification report.
Meet expected requirements
by
Standard management department administrative review, approval, numbering, release
Standard editorial unit established standard preparation group
Standard Management Department Organization Opening Ceremony
by
Standard project evaluation
Methodological technique
The target did not meet expectations
Claim
Did not pass
Did not pass
Figure 1 Environmental monitoring analysis method standard revision work procedure
4.1 Establishment of standard preparation group and opening argument
After receiving the standard revision project plan, the standard editorial unit shall be established within 2 months (or convene each participating unit to be established).
Group. The standard preparation team conducts investigations and studies on the existing methods and monitoring requirements in accordance with the requirements of the standard system revision project plan.
After the comparison, the work plan is proposed and the open-ended argumentation report is prepared, and the draft standard is preliminarily prepared. Hosted by the standard management department to hold a standard open question
Argumentation, organize relevant experts and representatives to review the opening of the argumentation report, the standard preparation group based on the method principle determined by the opening ceremony
Technical route to further carry out experimental research work. The content requirements of the opening report are given in Appendix B.
4.2 Methods Experimental work
The standard preparation team initially determines the technical content of the draft standard through experimental research, and optimizes the technical parameters and conditions of the method.
Test, determine the specific technical content and the detection limit, the lower limit of measurement, the precision and accuracy of the laboratory and other method characteristics, based on this
Prepare the draft standard and the preparation instructions. The content of the preparation instructions is shown in Appendix C.
4.3 Method validation work
The draft method standard should pass more than 6 standards of measurement or laboratory accreditation, verification of experimental conditions, monitoring capabilities and levels,
Representative laboratory validation. The standard preparation team shall prepare a method verification scheme. The main contents of the verification include the method detection limit and the measurement.
Limit, interlaboratory precision and accuracy.
The standard preparation team summarizes, analyzes and analyzes the verification data provided by each laboratory, and evaluates the analysis method. On this basis,
The method is improved, and the Method Validation Report is compiled. The content requirements are shown in Appendix D. If the technical indicators of the method do not meet the expected requirements,
The standard preparation team should further improve the draft standard through research experiments, and reorganize the method verification.
When the current standard is revised, if the content of the modification may affect the measurement results, the relevant content needs to be verified. If
Equivalent transformation of international or foreign standards, in principle, the applicability of the method and the main technical indicators for laboratory verification.
4.4 Standards for comments, technical review, approval, and release
After the standard preparation team has completed the preparation and submitted the standard consultation draft, preparation instructions and verification report, the management department will handle the standard solicitation.
See the matter. After the standard preparation group summarizes the comments and modifies the draft standard, it submits the standard review draft, preparation instructions and verification report.
The door organization conducts a technical review. After the standard preparation group modifies the draft standard based on the technical review opinions, submit the standard approval draft, preparation instructions and
The verification report shall be submitted for approval and release by the management department.
In the process of standard solicitation and technical review, if the verification data needs to be supplemented, the standard preparation team needs to arrange the verification experiment.
4.5 other
The standard management department reviews the current method standards according to the needs of social and economic development and environmental supervision, and determines whether it is necessary.
Make revisions.
5 basic requirements
5.1 Method standards should meet the requirements of relevant environmental quality standards and pollutant discharge (control) standards.
5.2 Method standards should be linked to environmental standards such as the relevant pollutant sampling method standards.
5.3 Method The method adopted should be stable, reliable, scientific, reasonable and practical.
5.4 Method standards are complete, accurate, easy to understand, and easy to implement.
5.5 Method standards The relevant technical documents and data are complete.
5.6 The method standard shall not stipulate the use of the technology, products and services of a specific enterprise, and the trademark name of a specific enterprise shall not appear.
Use patented technologies and formulations that are not disclosed in the protection period.
5.7 The method standards shall not use reagents that are prohibited or eliminated by the state.
6 standard structural elements
The structural elements of the environmental monitoring analysis method standard are shown in Table 1.
Table 1 Structural elements of environmental monitoring analysis method standards
No. Feature Type Corresponding Articles in this Standard
1 cover essential elements 7.1
2 Items Required 7.2
3 Preface essential elements 7.3
4 Standard Name Essentials 7.4
5 Warning Optional Elements 7.5
6 Scope of the necessary elements 7.6
7 Normative references optional elements 7.7
8 Terms and Definitions Optional Elements 7.8
9 Principles of Method Principles 7.9
10 Interference and elimination of optional elements 7.10
11 Reagents and materials essential elements 7.11
12 Instruments and equipment essential elements 7.12
13 Sample Essentials 7.13
14 Analytical Steps Essentials 7.14
15 Calculation and representation of the necessary elements 7.15
16 Precision and Accuracy Essentials 7.16
17 Uncertainty optional element 7.17
18 Quality Assurance and Quality Control Essentials 7.18
19 Test report optional elements 7.19
20 Waste Treatment Optional Elements 7.20
21 Notes Optional Elements 7.21
22 Normative Appendix Optional Elements 7.22
23 Informative Appendix Optional Elements 7.22
24 References Optional Elements 7.23
7 main technical content
7.1 cover
According to the provisions of HJ 565.
7.2 Contents
According to the provisions of HJ 565.
7.3 Preface
According to the provisions of HJ 565.
7.4 Standard Name
7.4.1 The standard name uses a three-stage expression, that is, the environmental monitoring elements to which the analytical method standard applies, the specified components analyzed, or
The name of the feature and analysis method.
Example 1. Determination of dissolved oxygen in water. Electrochemical probe method
Water quality-Determination of dissolved oxygen-Electrochemical probe method
Example 2. Determination of ambient air ozone - Indigo disulphonate spectrophotometry
Ambient air-Determination of ozone-Indigo disulphonate spectrophotometry
7.4.2 The English name of the standard should be written.
7.5 Warning
Reagents involving highly toxic, flammable, explosive, corrosive, radioactive, strong volatility, etc., and
Don't pay attention to safety and protection matters.
7.6 Scope of application
7.6.1 The environmental monitoring elements to which the standard applies, the name of the object being analyzed and the method of analysis should be stated.
7.6.2 The detection limit, lower limit of measurement and upper limit of measurement (if necessary) or measurement range of the object to be analyzed shall be stated. If necessary, should give no
The detection limit and the lower limit of measurement corresponding to the sampling situation, different sample quantities, and different test conditions.
7.6.3 If several analytical methods are included in the standard, the scope of application of each analytical method should be clearly indicated.
7.6.4 Not included in the standard name, but need to be explained.
7.6.5 Where applicable, the inapplicability of the standard should be clarified.
7.7 Normative references
7.7.1 Normative references refer to national environmental protection standards, other national standards, industry standards and international standards cited in the standard texts.
Standards, etc. The standards that have been abolished by the state are not to be quoted.
7.7.2 The lead should be in accordance with the requirements of Annex 12 of the “Administrative Measures for the Revision and Revision of National Environmental Protection Standards”.
7.7.3 The order in which the referenced documents are arranged is as specified in HJ 565.
7.8 Terms and definitions
7.8.1 The definitions necessary to understand the terms in the standard should be given.
7.8.2 Terms and definitions should be as far as possible defined in national environmental protection standards, other national standards, industry standards and international standards.
7.9 Principle of the method
7.9.1 Briefly describe the basic principles, characteristics and main steps of the method.
7.9.2 In the case of chemical reactions, chemical equations should be written in principle. If the reaction cannot be completed in one step, each step should be given in detail.
Reaction equation.
7.10 Interference and elimination
7.10.1 Based on the interference experiment, the links and factors that cause interference to the method are proposed.
7.10.2 In the presence of interference, the components of the interference and their limits, as well as the degree of interference, should be stated.
7.10.3 The method and procedure for eliminating interference should be explained. If the elimination method or operation step is in “Reagents and Materials”, “Sample” or “Minutes”
In the detailed description of the step, you can directly quote its clause number.
7.11 Reagents and materials
7.11.1 The following expression is generally used as a lead, “Unless otherwise stated, analytically pure reagents that meet national standards are used in the analysis.
Distilled water. "When water of the grade specified in GB/T 6682 is required, the following expression is used. "Unless otherwise stated, the analysis is carried out
Analytically pure reagents in accordance with national standards, water, GB/T 6682, × grade. "When phenol-free water, no carbon dioxide water, no ammonia is needed
When using water for special purposes such as water and zinc-free water, the control requirements, such as the limit of phenol in "phenol-free water" and the preparation method for special-purpose water, should be indicated.
7.11.2 All reagents and materials used in the test should be listed.
7.11.3 Reagents and materials shall be serially numbered in the order.
-- commercially available products (excluding solutions);
-- a reference reagent;
- solutions and suspensions;
--standard solution;
-- indicator;
-- Auxiliary materials.
7.11.4 The chemical name, molecular formula, purity or purity level, concentration (content), density, and whether crystalline water, etc. of the reagent should be stated.
Main characteristics, as well as the specifications and performance of the experimental materials.
7.11.5 Reagents and materials to be prepared by themselves shall be described in terms of preparation methods and environmental conditions. When necessary, the corresponding calculation formula should be given
And preparation flow chart.
7.11.6 The preparation method of the standard solution and its calibration method shall be explained.
7.11.7 For the reagents and materials that need to be stored, the storage methods and conditions, storage time, precautions, etc. should be stated.
7.11.8 The expression of quantities and units carries out the provisions of HJ 565.
Example.
Unless otherwise stated, analytically pure reagents and distilled water in accordance with national standards were used for the analysis.
6.1 Sulfuric acid. ρ(H2SO4) = 1.84 g/ml.
6.2 Sulfuric acid solution. 19.
6.3 Sulfuric acid solution. 15.
6.4 Sulfuric acid solution. c(H2SO4) = 1 mol/L.
Pour 55 ml of sulfuric acid (6.1) into a small amount of water and dilute to 1 L.
6.5 sodium hydroxide solution. ρ (NaOH) = 0.02 g/ml.
Take 20 g of sodium hydroxide dissolved in a small amount of water and dilute to 1 L.
6.6 Mercuric sulfate (HgSO4) – sulfuric acid solution
Weigh 30.0 g of mercury sulphate dissolved in 100 ml of sulfuric acid solution (6.2).
6.7 Silver sulfate (Ag2SO4) – sulfuric acid solution
Add 10 g of silver sulfate to 1 L of sulfuric acid (6.1), let it dissolve for 1 to 2 d, mix well, and carefully shake before use.
6.8 Potassium dichromate standard solution. c (K2Cr2O7) = 0.041 7 mol/L.
After drying 12.258 g of potassium dichromate at 105 ° C for 2 h, it was dissolved in water and diluted to 1 000 ml.
6.9 Sodium thiosulfate standard solution. c (Na2S2O3) ≈ 0.05 mol/L.
Weigh 12.4 g of sodium thiosulfate (Na2S2O3·5H2O) dissolved in freshly boiled and capped cooling water, add 1.0 g of anhydrous sodium carbonate (Na2CO3), and transfer
Into a 1 000 ml brown volumetric flask, dilute to the mark with water and shake well. The exact concentration is calibrated after one week of placement. If the solution is cloudy, it must be filtered.
In a 250 ml iodine bottle, add 1.0 g of potassium iodide (KI) and 50 ml of water, add 5.00 ml of potassium dichromate standard solution (6.8), shake to complete dissolution
After solution, add 5 ml of sulfuric acid solution (6.3), immediately shake it, place it in the dark for 5 min,......
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