Home Cart Quotation About-Us
www.ChineseStandard.net
SEARCH

HJ 493-2009 English PDF

US$469.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
HJ 493-2009: Water quality. Technical regulation of the preservation and handling of samples
Status: Valid
Standard IDUSDBUY PDFLead-DaysStandard Title (Description)Status
HJ 493-2009469 Add to Cart 3 days Water quality. Technical regulation of the preservation and handling of samples Valid

Similar standards

HJ 644   HJ/T 400   GB/T 16157   HJ 495   HJ 494   

Basic data

Standard ID: HJ 493-2009 (HJ493-2009)
Description (Translated English): Water quality. Technical regulation of the preservation and handling of samples
Sector / Industry: Environmental Protection Industry Standard
Classification of Chinese Standard: Z12
Classification of International Standard: 13.060
Word Count Estimation: 18,162
Date of Issue: 2009-09-27
Date of Implementation: 2009-11-01
Older Standard (superseded by this standard): GB/T 12999-1991
Regulation (derived from): Department of Environmental Protection Notice No. 47 of 2009
Issuing agency(ies): Ministry of Ecology and Environment
Summary: This standard specifies the preparation of water samples from the container to add protection agents various aspects of conservation measures and sample label design, transport, receive, and to ensure the quality of generic sample preservation techniques. This standard applies to natural water, sewage and industrial wastewater. When the collected water samples (instantaneous samples or mixed samples) is not immediately on the scene analysis, must be sent to the laboratory tests, the standards provide sample preservation techniques and management procedures are applicable.

HJ 493-2009: Water quality. Technical regulation of the preservation and handling of samples

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Water quality.Technical regulation of the holding and handling of samples HJ National Environmental Protection Standard of the People's Republic Replace GB 12999-91 Technical regulations for the preservation and management of water quality samples Water quality-Technical regulation of the and Handling of samples Published on.2009-09-27 2009-11-01 Implementation Ministry of Environmental Protection released Ministry of Environmental Protection announcement No. 47 of.2009 In order to implement the "Environmental Protection Law of the People's Republic of China", protect the environment, and protect human health, we now approve the measurement of water quality polycyclic aromatic hydrocarbons. Eighteen standards, such as fixed liquid extraction and solid phase extraction high performance liquid chromatography, are national environmental protection standards and are released. The standard name and number are as follows. I. Determination of Polycyclic Aromatic Hydrocarbons by Liquid-Liquid Extraction and Solid Phase Extraction High Performance Liquid Chromatography (HJ 478-2009); 2. Determination of nitrous oxides (nitrogen oxides and nitrogen dioxide) - Determination of naphthalene diamine hydrochloride spectrophotometric method (HJ 479- 2009); III. Determination of Fluoride in Ambient Air Filtration of Fluoride Ion Selective Electrode Method (HJ 480-2009); IV. Determination of fluoride in ambient air Determination of fluoride ion-selective electrode method for lime filter paper (HJ 481-2009); V. Determination of Sulfur Dioxide in Ambient Air - Formaldehyde Absorption - Pararosaniline Spectrophotometry (HJ 482-2009); 6. Determination of Sulfur Dioxide in Ambient Air - Tetrachloromercury Salt Absorption - Pararosaniline Spectrophotometry (HJ 483-2009); VII. Determination of water content cyanide volumetric method and spectrophotometry (HJ 484-2009); VIII. Determination of copper in water quality by diethyldithiocarbamate spectrophotometry (HJ 485-2009); IX. Determination of copper in water quality 2,9-Dimethyl-1,10 phenanthroline spectrophotometry (HJ 486-2009); X. Determination of Fluoride in Water Quality by Spectrophotometric Method of Zirconium Sulfate Sulfate (HJ 487-2009); XI. Determination of Fluoride in Water Quality Fluorescence Spectrophotometry (HJ 488-2009); XII. Determination of Silver in Water Quality 3,5-Br2-PADAP Spectrophotometry (HJ 489-2009); XIII. Determination of Silver in Water Quality by Cadmium Reagent 2B Spectrophotometry (HJ 490-2009); XIV. Determination of Total Chromium in Soils by Flame Atomic Absorption Spectrophotometry (HJ 491-2009); 15. Air Quality Vocabulary (HJ 492-2009); 17. Water Quality Sampling Technical Guidance (HJ 494-2009); 18. “Technical Guidance for the Design of Water Quality Sampling Plans” (HJ 495-2009). The above standards have been implemented since November 1,.2009 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 20 national environmental protection standards approved and issued by the former National Environmental Protection Agency shall be abolished. The exact name and number are as follows. 1. "Determination of six specific polycyclic aromatic hydrocarbons in water quality by high performance liquid chromatography" (GB 13198-91); 2. Determination of nitrogen oxides in air quality - Determination of naphthylethylenediamine hydrochloride (GB 8969-88); 3. "Saltzman method for determination of nitrogen oxides in ambient air" (GB/T 15436-1995); 4. Determination of the concentration of fluoride in ambient air, filter membrane and fluoride ion selective electrode method (GB/T 15434-1995); V. Determination of Fluoride in Ambient Air Lime Filter Paper · Fluoride Ion Selective Electrode Method (GB/T 15433-1995); 6. Determination of Sulphur Dioxide in Ambient Air - Formaldehyde Absorption - Pararosaniline Spectrophotometry (GB/T 15262-94); VII. Determination of Air Quality, Sulfur Dioxide, Tetrachloromercury Salt - Pararosaniline Hydrochloride Colorimetric Method (GB 8970-88); VIII. Determination of Cyanide in Water Quality Part I Determination of Total Cyanide (GB 7486-87); IX. Determination of Cyanide in Water Quality Part 2 Determination of Cyanide (GB 7487-87); X. Determination of copper in water quality by diethyldithiocarbamate spectrophotometry (GB 7474-87); XI. Determination of Copper in Water Quality 2,9-Dimethyl-1,10-phenanthroline Spectrophotometric Method (GB 7473-87); Twelve, "Determination of Fluoride in Water Quality, Zirconium Sulfonic Acid Visual Colorimetric Method" (GB 7482-87); XIII. Determination of Fluoride in Water Quality Fluorescence Spectrophotometry (GB 7483-87); XIV. Determination of Silver in Water Quality, 3,5-Br2-PADAP Spectrophotometry (GB 11909-89); Fifteen, "Measurement of mercury in water, cadmium reagent 2B spectrophotometry" (GB 11908-89); XVI. Determination of Total Chromium in Soil Quality by Flame Atomic Absorption Spectrophotometry (GB/T 17137-1997); 17. Air Quality Vocabulary (GB 6919-86); 18. Technical Regulations for the Preservation and Management of Water Samples (GB 12999-91); Nineteen, "Water Quality Sampling Technical Guidance" (GB 12998-91); 20. Technical Regulations for the Design of Water Quality Sampling Plans (GB 12997-91). Special announcement. September 27,.2009

Content

Foreword..iv 1 Scope..1 2 sample storage..1 3 sample label design 4 4 sample transportation..4 5 sample reception..5 6 Sample Quality Control Regulations.5 7 Common sample preservation techniques.5

Foreword

In order to implement the "Environmental Protection Law of the People's Republic of China" and the "Water Pollution Prevention and Control Law of the People's Republic of China" The body health, standardize the preservation and management of water quality samples, and develop this standard. This standard stipulates the preservation measures of water samples from the preparation of containers to the addition of protective agents, as well as the label design, transportation and connection of samples. Accept and guarantee the quality of the sample. This standard has revised the Technical Regulations for the Preservation and Management of Water Samples (GB 12999-91), the original standard drafting list. It is the China Environmental Monitoring Center and was first published in.1991. This is the first revision. The main revisions are as follows. - Increase the minimum sample size of a single sample and quantify the amount of part of the preservative added. - Increase the container washing method for the analysis project. Delete the "Analysis Site" and "Recommendations" into a "Remarks". -- Increase the number of items to be tested, including 33 physical and chemical indicators, such as permanganate index, Kjeldahl nitrogen, total nitrogen, formaldehyde, and volatility Organic substances, pesticides, herbicides, phthalates, etc.; increased biological indicators 4; increased radiological indicators 10 items. The national environmental protection standard “Water quality approved and issued by the former National Environmental Protection Agency on January 25,.1991 since the implementation of this standard. Technical Regulations for the Preservation and Management of Sampling Samples (GB 12999-91) is abolished. This standard was formulated by the Science and Technology Standards Department of the Ministry of Environmental Protection. This standard is mainly drafted by. China Environmental Monitoring Center, Liaoning Provincial Environmental Monitoring Center Station. This standard was approved by the Ministry of Environmental Protection on September 27,.2009. This standard has been implemented since November 1,.2009. This standard is explained by the Ministry of Environmental Protection. Iv Technical regulations for the preservation and management of water quality samples

1 Scope of application

This standard stipulates the preservation measures of water samples from the preparation of containers to the addition of protective agents, as well as the label design, transportation and connection of samples. A common technique for collecting and ensuring the quality of sample preservation. This standard applies to natural water, domestic sewage and industrial wastewater. When the collected water sample (instantaneous or mixed sample) cannot be immediately present Field analysis must be sent to the laboratory for testing. The sample preservation techniques and management procedures provided in this standard are applicable.

2 sample storage

Water samples of various water quality, from the time of collection to analysis, due to physical, chemical, biological effects will occur to varying degrees Changes, these changes make the sample at the time of analysis no longer the sample at the time of sampling, in order to minimize this change, The sample must be protected at the time of sampling. 2.1 Reasons for changes in water samples 2.1.1 Physical effects. Light, temperature, standing or vibration, storage conditions such as exposure or sealing and the material of the container will affect the nature of the water sample. If the temperature rises or strong vibration will cause some substances such as oxygen, cyanide and mercury to volatilize, long-term standing will make Al(OH)3, CaCO3, Precipitation such as Mg3(PO4)2. The inner wall of some containers irreversibly adsorbs or absorbs some organic matter or metal compounds. 2.1.2 Chemical action. The chemical reaction of each component of the water sample and the water sample may change the content and properties of certain components. Such as air The oxygen in the oxygen can oxidize divalent iron, sulfide or the like, depolymerize the polymer, and polymerize the monomer compound. 2.1.3 Biological effects. The metabolism of bacteria, algae, and other organisms consumes certain components of the water sample, producing some new groups. Points, changing the properties of some components, biological effects will be some items in the sample to be tested such as dissolved oxygen, carbon dioxide, nitrogen compounds, phosphorus And the content and concentration of silicon and the like have an influence. 2.2 Precautions for sample preservation The extent to which a water sample changes during storage depends mainly on the type of water and the chemical and biological properties of the water sample, and also on preservation. Conditions, container materials, transportation and climate change. These changes are often very fast. Samples often change significantly in a short period of time, so the necessary must be taken in all circumstances Save the measure and analyze it as quickly as possible. Preservation measures are useful in reducing the degree of change or the speed of slow change, but to the point All previous preservation measures have not completely suppressed these changes. And for different types of water, the resulting preservation effect is different, drink Water is easy to store, because it is not sensitive to biological or chemical effects, and general preservation measures can be effectively stored on surface water and groundwater. But it is different for wastewater. The nature of the wastewater or the sampling location of the wastewater is different, and the preservation effect is different, such as from the urban drainage pipe network and sewage. The wastewater of the water treatment plant has different preservation effects, and the wastewater from the biochemical treatment plant and the untreated wastewater have different preservation effects. The analysis project determines the storage time of the wastewater sample. Some analysis projects require separate sampling, and some analysis projects require on-site analysis. Samples of some items can be stored for a longer period of time. Due to the difference in sampling location and sample composition, no suitable field has been found so far. The absolute criterion for the situation of integration. In all cases, the storage method should match the analytical technique used. This standard specifies the most versatile Use technology. 2.2.1 Selection of containers Containers for collecting and preserving samples should take into account the following aspects (especially when the components being analyzed are present in trace amounts). 2.2.1.1 Minimize contamination of samples by containers and stoppers. Generally, glass can dissolve sodium, calcium, magnesium, silicon when storing water samples. For elements such as boron, glass containers should be avoided when measuring these items to prevent new contamination. Some colored corks contain a lot of heavy gold Genus. 2.2.1.2 The wall of the container should be easy to clean and handle to reduce the surface contamination of the container by trace elements such as heavy metals or radionuclides. 2.2.1.3 The chemical and biological properties of the container or container stopper should be inert to prevent the container from reacting with the sample components. When measuring fluorine, Water samples cannot be stored in glass bottles because the glass reacts with fluoride. 2.2.1.4 Prevent the container from absorbing or adsorbing the component to be tested, causing a change in the concentration of the component to be tested. Trace metals are susceptible to these factors. Others such as detergents, pesticides, and phosphates are also affected. 2.2.1.5 Dark glass can reduce photosensitivity. 2.2.2 Preparation of the container 2.2.2.1 General rules All preparations should ensure that no positive or negative interference occurs. Use a dedicated container whenever possible. If a special container cannot be used, it is best to prepare a container for the determination of specific contaminants to reduce Less cross contamination. At the same time, care should be taken to prevent the previously collected high-concentration analytes from contaminating the subsequently collected low-concentration contaminants due to incomplete washing. sample. For new containers, it should be washed first with detergent and then thoroughly with pure water. However, detergents and solvents used for cleaning may be cited Interference, such as when the nutrient is analyzed, the residue of the phosphate-containing detergent is contaminated. If used, ensure detergent and solvent quality. If silicon, boron and surfactant are determined, detergents cannot be used. The type of detergent used and the material of the selected container should be treated Determine the components to determine. Phosphate-containing detergents should not be used for the determination of phosphates; chromic acid-sulphuric acid washes cannot be used for the determination of sulfates or chromium. Measuring the weight of metal Glass containers and polyethylene containers are usually washed with hydrochloric acid or nitric acid (c = 1 mol/L) and soaked for 1 to 2 days, then rinsed with distilled or deionized water. 2.2.2.2 Cleaning agent cleaning plastic or glass containers This procedure is as follows. a) washing the container and the container cap with a mixed dilution solution of water and a cleaning agent; b) Wash twice with laboratory water; c) Control the dry water and cover the container cap. 2.2.2.3 Solvent washing glass container This procedure is as follows. a) washing the container and the container cap with a mixed dilution solution of water and a cleaning agent; b) thoroughly cleaned with tap water; c) Wash twice with laboratory water; d) washed with acetone and dried; e) Wash with a solvent matching the analytical method and immediately cover the container cap. 2.2.2.4 Pickled glass or plastic containers This procedure is as follows. a) washing the container and the container cap with a mixed dilution solution of tap water and a cleaning agent; b) thoroughly cleaned with tap water; c) washing with 10% nitric acid solution; d) after being dried, filled with 10% nitric acid solution; e) sealed and stored for at least 24 h; f) Wash with laboratory water and immediately cap the container. 2.2.2.5 Preparation of containers for the determination of samples such as pesticides and herbicides Plastic containers other than Teflon will cause significant interference in the analysis, so brown glass bottles are generally used. Cleaned according to general rules (ie After water and detergent-chromic acid-sulfuric acid-distilled water (see 2.2.2.4), it is dried in an oven at 180 ° C for 4 h. After cooling, use pure Rinse the hexane or petroleum ether several times. 2.2.2.6 Samples for microbiological analysis Containers and plugs and lids for microbiological analysis should be autoclaved at a temperature that ensures that they are not released or produced at this temperature. How to inhibit biological activity, inactivate or promote the growth of biological substances. Glass containers, washed according to general cleaning principles (see 2.2.2.3), soaked in nitric acid and rinsed with distilled water to remove heavy metals or chromates the remains. Sodium thiosulfate (Na2S2O3) can be added to the vessel before sterilization to remove the residual inhibition of bacteria by the residual chlorine (per 125 The ml container is metered with 0.1 ml of 10 mg/L Na2S2O3). 2.2.3 Storage of containers For samples that need to be assayed for physico-chemical analytes, the water sample should be filled to the container to overflow and sealed for storage to reduce oxygen in the air. Gas, carbon dioxide reaction interference and oscillation interference during sample transportation. However, when the sample needs to be stored frozen, it should not overflow. 2.2.4 Processing and preservation of biological detection The samples used for chemical analysis are different from the samples used for biological analysis. The chemicals added to the bioassay sample can be fixed Or to preserve the sample, "fixed" is used to describe the preservation of the morphological structure, while "storage" is used to prevent biochemical or chemical degradation of the organic matter. Preservatives, by definition, are toxic, and the addition of preservatives can lead to the death of living things. Vibration can cause those before death Fragile creatures without strong nuclear walls collapse before “fixed” is completed. In order to minimize this effect, the preservative quickly enters the nucleus It is very important that there are some preservatives, such as Lug's solution, which can lead to the loss of taxa, within a specific season of a specific range. Can become a problem. For example, in the summer, when the silicon-flagellate is frequently detected, it can be solved by adding a preservative such as Luger's alkaline solution. Decide. Bioassay samples should be stored in accordance with the following criteria. a) Know in advance the effect of preservatives on the prevention of loss of biological organisms; b) preservatives can effectively prevent the biological degradation of organic matter at least during storage; c) Preservatives should ensure that the taxonomic group is adequately studied during the shelf life. 2.2.5 Treatment and preservation of radiochemical analysis samples The samples used for chemical analysis are different from the samples used for radiochemical analysis. Safety measures depend on the nature of the radioactivity of the sample. The preser......
Image     

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of HJ 493-2009_English be delivered?

Answer: Upon your order, we will start to translate HJ 493-2009_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of HJ 493-2009_English with my colleagues?

Answer: Yes. The purchased PDF of HJ 493-2009_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.