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

HJ 776-2015 English PDF

US$529.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
HJ 776-2015: Water quality. Determination of 32 elements. Inductively coupled plasma optical emission spectrometry
Status: Valid
Standard IDUSDBUY PDFLead-DaysStandard Title (Description)Status
HJ 776-2015529 Add to Cart 4 days Water quality. Determination of 32 elements. Inductively coupled plasma optical emission spectrometry Valid

Similar standards

HJ 511   HJ 945.3   HJ 780   

Basic data

Standard ID: HJ 776-2015 (HJ776-2015)
Description (Translated English): Water quality. Determination of 32 elements. Inductively coupled plasma optical emission spectrometry
Sector / Industry: Environmental Protection Industry Standard
Word Count Estimation: 23,261
Date of Issue: 2015-12-04
Date of Implementation: 2016-01-01
Quoted Standard: GB/T 6682; HJ 678; HJ/T 91; HJ/T 164
Regulation (derived from): Ministry of Environment Announcement 2015 No.81
Issuing agency(ies): Ministry of Ecology and Environment
Summary: This Standard specifies the determination of water and 32 kinds of elements by inductively coupled plasma atomic emission spectrometry. This Standard applies to surface water, groundwater, sewage and industrial waste water in silver, aluminum, arsenic, boron, barium, beryllium, bismuth, calcium, cadmium, cobalt, chromium, copper, iron, potassium, lithium, magnesium, manganese, molybdenum, Determination of 32 kinds of elements and their total soluble elements sodium, nickel, phosphorus, lead, sulfur, antimony, selenium, silicon, tin, strontium, titanium, vanadium, zinc and zirconium. This Standard method detection limit of the elements 0.009 mg/L ~ 0.1 mg/L, detection limit of 0.036 mg/L ~ 0.39 mg/L. The method detection limit of the elements described in Appendix A.

HJ 776-2015: Water quality. Determination of 32 elements. Inductively coupled plasma optical emission spectrometry


---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.Determination of 32 elements.Inductively coupled plasma optical emission spectrometry National Environmental Protection Standard of the People 's Republic of China Water quality 32 kinds of elements Inductively Coupled Plasma Atomic Emission Spectrometry Water quality - Determination of 32 elements- Inductively coupled plasma optical emission spectrometry 2015-12-04 released 2016-01-01 Implementation Ministry of Environmental Protection released Directory Preface .ii

1 Scope of application

2 normative reference documents

3 terms and definitions

4 Principle of the method

5 interference and elimination

6 reagents and materials

7 instruments and equipment

8 samples

9 Analysis steps

Calculation and representation of results 11 Precision and Accuracy 12 Quality assurance and quality control 13 Waste treatment .10 Appendix A (normative) method limits the detection limit and the lower limit of determination Appendix B (informative) Elemental determination Wavelength and inter-element interference 12 Appendix C (informative) method of precision and accuracy

Foreword

To implement the "Environmental Protection Law of the People's Republic of China" and "Water Pollution Prevention Law of the People's Republic of China" to protect the environment and protect the human body Health, regulate the determination of 32 kinds of elements in water, the development of this standard. This standard specifies the determination of surface water, groundwater, domestic sewage and industrial wastewater in the 32 elements of the inductively coupled plasma emission Spectrum method. This standard is the first release. Appendix A to this standard is a normative appendix, Appendix B and Appendix C are informative appendices. This standard is organized by the Ministry of Environmental Protection Science and Technology Standards Division. The main drafting unit of this standard. Jiangsu Province Environmental Monitoring Center. The standard verification unit. China Geological Survey Nanjing Center (Nanjing Institute of Geology and Mineral Resources), Jiangsu Province, physical and chemical testing center, Ministry of Land and Resources East China Mineral Resources Supervision and Testing Center, Suzhou City Environmental Monitoring Center, Huai'an City Environmental Monitoring Station and Changzhou City Environmental Monitoring Center station. This standard is approved by the Ministry of Environmental Protection on December 4,.2015. This standard has been implemented since January 1,.2016. This standard is explained by the Ministry of Environmental Protection. Water quality 32 kinds of elements Inductively Coupled Plasma Atomic Emission Spectrometry Warning. nitric acid, perchloric acid with strong oxidizing and corrosive, hydrochloric acid with strong volatility and corrosive, should wear protective And operate in a fume hood.

1 Scope of application

This standard specifies the inductively coupled plasma emission spectrometric method for the determination of 32 elements in water. This standard applies to surface water, groundwater, domestic sewage and industrial wastewater in the silver, aluminum, arsenic, boron, barium, beryllium, bismuth, calcium, Iron, lead, sulfur, antimony, selenium, silicon, tin, strontium, titanium, vanadium, zinc and so on. Determination of Soluble Elements and Elements in 32 Kinds of Elements. The detection limit of each element in this standard is 0.009 mg/L ~ 0.1 mg/L, the lower limit of determination is 0.036 mg/L ~ 0.39 mg/L. Each element See Appendix A for the method of detection.

2 normative reference documents

The contents of this standard refer to the following documents or their terms. For undated references, the valid version applies to this standard quasi. GB/T 6682 Analytical laboratory water specifications and test methods Microwave digestion method for digestion of total water quality of HJ 678 Technical specification for surface water and wastewater monitoring Technical specification for groundwater environmental monitoring

3 terms and definitions

The following terms and definitions apply to this standard. 3.1 soluble elements The acid content of the sample after filtration through the 0.45 μm filter. 3.2 Total elements The unfiltered sample, the content of the element measured after digestion.

4 principle of the method

After the filtered or digested water sample is injected into the inductively coupled plasma emission spectrometer, the target element is gasified in the plasma torch, Ionization, excitation and radiation of the characteristic line, in a certain concentration range, the characteristic line of the intensity and the concentration of the element is proportional to.

5 interference and elimination

Inductively Coupled Plasma Atomic Emission Spectroscopy usually exists in the interference can be divided into two categories. one is spectral interference, the other is non-spectral dry Disturb. 5.1 spectral interference Spectral disturbances mainly include continuous background and overlapping interference. The current correction method is the background subtraction method (according to the single element And the mixed element test to determine the location and manner of subtracting the background) and the interference coefficient method. Basics can also be used in mixed standard solutions To eliminate its effects. When there is a single element interference, the interference factor can be obtained according to the following formula. T Q QQK) '(- = Where tK - interference coefficient; 'Q - interference element plus analysis element content; Q - analysis of the content of elements; TQ - the content of interfering elements. By preparing a series of solutions containing a known amount of interfering elements, the 'Q is determined at the position of the wavelength of the element, and the formula TK, and then manual deduction or computer automatic deduction. Under normal circumstances, surface water, groundwater samples due to low element concentration, spectral and inter-element interference between the general circumstances can ignore. Industrial wastewater and other common target elements to determine the wavelength spectrum interference see Appendix B. Note that the interferometric coefficients for different instruments are different. 5.2 Non-spectral interference Non-spectral interference mainly includes chemical interference, ionization interference, physical interference and solvent interference, etc., in the actual analysis of various types of Interference is difficult to separate. Whether it is compensated and corrected, and the concentration of interfering elements in the sample. In addition, the physical interference is generally the same The degree of stickiness and surface tension of the product changes, especially when the sample contains a large number of soluble salts or samples of acidity is too high, Health interference. The easiest way to eliminate such interference is to dilute the sample. But should ensure that the content of the measured element is higher than the lower limit of determination.

6 reagents and materials

Unless otherwise noted, the use of the use of national standards in accordance with the use of excellent pure chemical reagents. Experimental water should meet GB/T 6682 level Water related requirements. 6.1 Nitric acid. ρ (HNO3) = 1.42 g/ml. 6.2 Hydrochloric acid. ρ (HCl) = 1.19 g/ml. 6.3 Sulfuric acid. ρ (H2SO4) = 1.84 g/ml. 6.4 Perchloric acid. ρ (HClO4) = 1.68 g/ml. 6.5 Sodium hydroxide (NaOH). 6.6 argon. purity not less than 99.9%. 6.7 Nitric acid solution. 1 1. 6.8 Nitric acid solution. 1 9. 6.9 hydrochloric acid solution. 1 1. 6.10 hydrochloric acid solution. 1 9. 6.11 hydrochloric acid solution. 1 20. 6.12 sulfuric acid solution. 1 1. 6.13 sulfuric acid solution. 1 4. 6.14 Sodium hydroxide solution. ρ (NaOH) = 100 g/L Weigh 100 g sodium hydroxide (6.5) dissolved in the amount of water, dissolved after adding water to the volume of 1000 ml, shake. 6.15 standard solution 6.15.1 Single element standard stock solution. Silver (Ag), aluminum (Al), arsenic (As), boron (B), barium (Ba), beryllium (Be), bismuth (Bi), calcium (Ca), cadmium (Cd) (Fe), iron (Fe), iron (Fe), potassium (K), lithium (Li), magnesium (Mg), manganese (Mn), molybdenum (Mo) (Sn), strontium (Sr), titanium (Ti), titanium (Ni), phosphorus (P), lead (Pb), sulfur (S), antimony (Sb), selenium (Se), silicon (Si) And Vanadium (V), zinc (Zn) and zirconium (Zr) at a concentration of 1000 mg/L or 100 mg/L. From the purchase or purchase of commercially available standard solution. 6.15.1.1 Silver (Ag). ρ = 1000 mg/L. Weigh 1.0000 g (accurate to 0.0001 g) of metallic silver (pure spectrum), dissolved in 25 ml nitric acid (6.1) and cooled. Apply water to 1 L. 6.15.1.2 Aluminum (Al). ρ = 1000 mg/L. Weigh 1.0000 g (accurate to 0.0001 g) metal aluminum (pure spectrum), dissolved in 150 ml hydrochloric acid solution (6.9), boiled, After cooling, use experimental water to set to 1 L. 6.15.1.3 arsenic (As). ρ = 1000 mg/L. Weigh 1.3203 g (accurate to 0.0001 g) arsenic trioxide (As2O3), dissolve with 20 ml of sodium hydroxide solution (6.14) Diluted with an appropriate amount of water, neutralized with hydrochloric acid (6.2) to a pH of about 6, and fixed to 1 L with experimental water. 6.15.1.4 Boron (B). ρ = 1000 mg/L. Weigh 5.7192 g (accurate to 0.0001 g) boric acid (H3BO3) dissolved in a small amount of water, with the experimental water volume to 1 L. 6.15.1.5 Barium (Ba). ρ = 1000 mg/L. Weigh 1.5163 g (accurate to 0.0001 g) anhydrous barium chloride (BaCl2, 250 ° C for 2 h), washed with 20 ml of nitric acid solution (6.7) Dissolved, with the experimental water volume to 1 L. 6.15.1.6 Beryllium (Be). ρ = 100 mg/L. Weigh 0.1000 g (accurate to 0.0001 g) metal beryllium (pure spectrum), dissolved in 150 ml hydrochloric acid solution (6.9), and after cooling With the experimental water volume to 1 L. 6.15.1.7 Bi (Bi). ρ = 1000 mg/L. Weigh 1.0000 g (accurate to 0.0001 g) metal bismuth (pure spectrum) and dissolve with 50 ml nitric acid solution (6.7) until completely Dissolved and cooled to room temperature, with the experimental water volume to 1 L. 6.15.1.8 Calcium (Ca). ρ = 1000 mg/L. Weigh 2.4972 g (accurate to 0.0001 g) of calcium carbonate (CaCO3, 1, 10 ℃ for 1 h), dissolved in 20 ml of water, add 10 ml Hydrochloric acid (6.2) to complete dissolution, boil to remove CO2, after cooling with experimental water to volume 1L. 6.15.1.9 Cadmium (Cd). ρ = 1000 mg/L. Weigh 1.0000 g (accurate to 0.0001 g) metal cadmium (pure spectrum), dissolved in 30 ml nitric acid (6.1), with the experimental water volume To 1 L. 6.15.1.10 cobalt (Co). ρ = 1000 mg/L. Weigh 1.0000 g (accurate to 0.0001 g) metal cobalt (spectrum purity), dissolved in 50 ml nitric acid solution (6.7), cooled and cooled With the experimental water volume to 1 L. 6.15.1.11 Chromium (Cr). ρ = 1000 mg/L. Weigh 1.0000 g (accurate to 0.0001 g) of metal chromium (pure spectrum), dissolved in 30 ml hydrochloric acid solution (6.9), cooled and cooled With the experimental water volume to 1 L. 6.15.1.12 Copper (Cu). ρ = 1000 mg/L. Weigh 1.0000 g (accurate to 0.0001 g) of metallic copper (pure spectrum), dissolved in 30 ml nitric acid solution (6.7), cooled and cooled With the experimental water volume to 1 L. 6.15.1.13 Iron (Fe). ρ = 1000 mg/L. Weigh 1.0000 g (accurate to 0.0001 g) of metallic iron (pure spectrum), dissolved in 150 ml hydrochloric acid solution (6.9), cooled with solid Apply water to 1 L. 6.15.1.14 Potassium (K). ρ = 1000 mg/L. Weigh 1.9067 g (accurate to 0.0001 g) potassium chloride (KCl, at 400 ° C to 450 ° C until no burst) Dissolve and set to 1 L. 6.15.1.15 Lithium (Li). ρ = 1000 mg/L. Weigh 5.3240 g (accurate to 0.0001 g) lithium carbonate (Li2CO3, bake at 105 ° C for 1 h), add 20 ml of hydrochloric acid solution (6.9) To complete dissolution, with the experimental water volume to 1 L. 6.15.1.16 Magnesium (Mg). ρ = 1000 mg/L. Weigh 1.0000 g (accurate to 0.0001 g) of metallic magnesium (pure spectrum), add 30 ml of water, slowly add 30 ml of hydrochloric acid (6.2) To completely dissolved, boiled, cooled with experimental water to volume to 1 L. 6.15.1.17 Mn (Mn). ρ = 1000 mg/L. Weigh 1.0000 g (accurate to 0.0001 g) of metal manganese (pure spectrum), dissolved in 30 ml hydrochloric acid solution (6.9), after cooling With the experimental water volume to 1 L. 6.15.1.18 Molybdenum (Mo). ρ = 1000 mg/L. Weigh 1.7325 g (accurate to 0.0001 g) ammonium molybdate [(NH4) 6Mo7O24 • 4H2O], dissolved in experimental water and allowed to settle to 1 L. 6.15.1.19 Sodium (Na). ρ = 1000 mg/L. Weigh 2.5421 g (accurate to 0.0001 g) of sodium chloride (NaCl, at 400 ° C to 450 ° C until no burst) Dissolved in water and set to 1 L. 6.15.1.20 Nickel (Ni). ρ = 1000 mg/L. Weigh 1.0000 g (accurate to 0.0001 g) of metallic nickel (pure spectrum), dissolved with 30 m1 nitric acid solution (6.7), cooled and cooled With the experimental water volume to 1 L. 6.15.1.21 Phosphorus (P). ρ = 1000 mg/L. Weigh 4.3935 g (accurate to 0.0001 g) potassium dihydrogen phosphate (KH2PO4, bake at 110 ° C for 2 h), dissolve with the test water and set To 1 L. 6.15.1.22 Lead (Pb). ρ = 1000 mg/L. Weigh 1.0000 g (accurate to 0.0001 g) metal lead (pure spectrum), dissolve with 30 m1 nitric acid solution (6.7), after cooling With the experimental water volume to 1 L. 6.15.1.23 sulfur (S). ρ = 1000 mg/L. Weigh 4.4303 g (accurate to 0.0001 g) sodium sulfate (Na2SO4, bake at 105 ° C for 1 h) or weigh 5.4352 g (accurate to 0.0001 G) potassium sulfate (K2SO4, 105 ℃ baking 1 h), with 10 ml hydrochloric acid solution (6.11) dissolved, with the experimental water volume to 1 L. 6.15.1.24 Antimony (Sb). ρ = 1000 mg/L. Weigh 1.0000 g (accurate to 0.0001 g) metal antimony (spectrum purity), with 20 m1 ~ 30 m1 sulfuric acid solution (6.12) heating completely Dissolved, with sulfuric acid solution (6.13) constant volume to 1L. 6.15.1.25 Selenium (Se). ρ = 1000 mg/L. Weigh 1 million (accurate to 0.0001 g) selenium (pure spectrum), add 20 m1 ~ 30 ml hydrochloric acid solution (6.9), water bath heating solution Solution, drop a few drops of nitric acid (6.1) to complete dissolution, cooling with experimental water to volume to 1 L. 6.15.1.26 Si (Si). ρ (SiO2) = 1000 mg/L. 2.9640 g (0.0001 g) ammonium hexafluorosilicate [(NH4) 2SiF6] was weighed and heated to.200 ° C hydrochloric acid solution (6.11) at low temperature All dissolved, cooled with experimental water volume to 1 L. 6.15.1.27 Tin (Sn). ρ = 1000 mg/L. Weigh 1.0000 g (accurate to 0.0001 g) tin (pure spectrum), add 50 m1 hydrochloric acid solution (6.9), dissolve in water bath, cold But then add 80 m1 hydrochloric acid (6.2), with the experimental water volume to 1 L. 6.15.1.28 Strontium (Sr). ρ = 1000 mg/L. Weigh 1.6848 g (accurate to 0.0001 g) strontium carbonate (SrCO3, 105 ° C for 1 h) and dissolve in 60 ml hydrochloric acid solution (6.9) And boiled, cooled with experimental water to volume to 1 L. 6.15.1.29 Titanium (Ti). ρ = 1000 mg/L. Weigh 1.0000 g (accurate to 0.0001 g) metal titanium (pure spectrum), dissolved in 100 m1 hydrochloric acid solution (6.9), cooled and cooled And fixed to 1 L with hydrochloric acid solution (6.9). 6.15.1.30 Vanadium (V). ρ = 1000 mg/L. Weigh 2.2957 g (accurate to 0.0001 g) of ammonium metavanadate (NH4VO3) and heated to complete dissolution with 10 ml nitric acid (6.1) Experimental water volume to 1 L. 6.15.1.31 zinc (Zn). ρ = 1000 mg/L. Weigh 1.0000 g (accurate to 0.0001 g) of metal zinc (pure spectrum), dissolved with 40 ml of hydrochloric acid (6.2), boiled and cooled with Experimental water volume to 1 L. 6.15.1.32 Zirconium (Zr). ρ = 1000 mg/L. Weigh 3.5328 g (0.0001 g) of zirconium chloride (ZrOCl2 · 8H2O) with 40 ml to 50 ml of hydrochloric acid solution (6.10) to Completely dissolved and fixed to 1 L with hydrochloric acid solution (6.10). 6.15.2 Single element standard use liquid. Remove the single element standard stock solution (6.15.1) dilution preparation separately. Diluted with a certain amount of nitric acid (6.7), so that the standard use of liquid Of nitric acid content of 1%. 6.15.3 Multi-element mixed standard solution. According to the interference between the elements of the situation and the nature of the standard solution of the preparation, the concentration should be based on the analysis of samples and elements to be determined, The acidity of the standard solution to keep the sample to be measured consistent with the acidity, are 1% nitric acid. Multi-element mixed standard solution grouping is shown in Table 1. Table 1 Multi-element mixed standard solution grouping table Grouping elements 1 Mo, Ag 2 P 3 V, Ti Al, B, Ba, Be, Ca, Cd, Co, Cr, Cu, Fe, Li, K, Mg, Mn, Na, Ni, Pb, Sr, Zn, Zr 5 As, Bi, Sb, Se, Sn 6 S 7 Si 6.16 Water microporous membrane. 0.45 μm pore size.

7 instruments and equipment

7.1 Inductively Coupled Plasma Atomic Emission Spectrometer. Computer Control System with Background Correction Emission Spectroscopy. 7.2 temperature control heating plate. a temperature control function (temperature stability ± 5 ℃), the controllable temperature is greater than 180 ℃. 7.3 Microwave digestion. power 600 W ~ 1500 W, temperature accuracy ± 2.5 ℃, equipped with microwave digestion tank. 7.4 Centrifuge. with 25 ml ~ 50 ml centrifuge tube, speed up to 3000 rpm. 7.5 General laboratory equipment commonly used.

8 samples

8.1 Collection and storage of samples The collection of water samples is carried out in accordance with the relevant provisions of HJ/T 91 and HJ/T 164. Before sampling, wash the polyethylene bottle with detergent and water, Placed in nitric acid solution (6.7) soak for more than 24 h, with the experimental water thoroughly washed. If the soluble element is determined, the sample is collected immediately after passage (6.16), discard the initial 50 ml ~ 100 ml filtrate, collect the required volume of the filtrate, add the appropriate amount of nitric acid (6.1), add the appropriate amount of nitric acid (6.1) So that the nitric acid content of 1%. Such as the total amount of elements measured, immediately after the collection of samples by adding nitric acid (6.1), the nitric acid content of 1%. 8.2 Preparation of the sample 8.2.1 Determination of soluble elements See 8.1 for sample handling. 8.2.2 Determine the total amount of elements A nitric acid solution (6.7) was added in proportion to a uniform volume of sample, usually 100 ml of sample was added to 5.0 ml of nitric acid (6.7). Placed on the hot plate heating digestion, in the case of non-boiling, slowly heated to near dry. Remove the cooling and repeat this process until The sample solution is light or stable. After cooling, add nitric acid (6.7) a few milliliters, add a small amount of water, set on the hot plate to continue The residue is dissolved by heating. After cooling, the volume of the original sample is set with the experimental water to keep the solution at 1% (v/v) nitric acid. For some Basically complex waste water, digestion can be added 2 ml ~ 5 ml perchloric acid (6.4) digestion. If there is some insoluble in the digestion solution, can be standing Or centrifuged at.2000 r......
Image     

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of HJ 776-2015_English be delivered?

Answer: Upon your order, we will start to translate HJ 776-2015_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of HJ 776-2015_English with my colleagues?

Answer: Yes. The purchased PDF of HJ 776-2015_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.