HJ 488-2009 English PDF

HJ 488-2009_English: PDF (HJ488-2009)
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HJ 488-2009239 Add to Cart 3 days Water quality. Determination of fluoride. Fluorine reagents spectrophotometry Valid

BASIC DATA
Standard ID HJ 488-2009 (HJ488-2009)
Description (Translated English) Water quality. Determination of fluoride. Fluorine reagents spectrophotometry
Sector / Industry Environmental Protection Industry Standard
Classification of Chinese Standard Z16
Classification of International Standard 13.060
Word Count Estimation 9,967
Date of Issue 2009-09-27
Date of Implementation 2009-11-01
Older Standard (superseded by this standard) GB/T 7483-1987
Drafting Organization China Environmental Monitoring Station
Administrative Organization Ministry of Environment Protection
Regulation (derived from) Department of Environmental Protection Notice No. 47 of 2009
Summary This standard specifies the determination of surface water, groundwater and industrial effluent fluoride fluoride reagent spectrophotometry. This standard applies to surface water, groundwater and industrial wastewater Determination of fluoride. The method detection limit is 0. 02 mg/L, detection limit of 0. 08 mg/L.


HJ 488-2009 Water quality.Determination of fluoride.Fluorine reagents spectrophotometry HJ National Environmental Protection Standard of the People's Republic Replace GB 7483-87 Determination of fluoride in water quality Fluorine reagent spectrophotometry Water quality-Determination of fluoride -Fluorine reagents spectrophotometry 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); 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); XVI. Technical Regulations for the Preservation and Management of Water Quality Samples (HJ 493-2009); 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 Method principle..1 3 reagents and materials.1 4 instruments and equipment. 2 5 interference and elimination. 2 6 samples. 2 7 Analysis steps..2 8 result calculation..2 9 precision and accuracy..2 Appendix A (Normative) Determination of fluoride in water quality Pretreatment with interfering ion samples..3 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" Body health, standardize monitoring methods for fluoride in water, and develop this standard. This standard specifies methods for the determination of fluoride in surface water, groundwater and industrial wastewater. This standard amends the "Fluorine Spectrophotometric Method for the Determination of Fluoride in Water Quality" (GB 7483-87), the original standard drafting list The location is the Baotou City Environmental Monitoring Station. This is the first revision. The main revisions are as follows. - Broaden the linear range of the method by adjusting the cuvette; -- Adjust and revise some text and sentence structure. The national environmental protection standard “Water quality approved and issued by the former National Environmental Protection Agency on March 14, 1987 since the implementation of this standard. Determination of Fluoride Fluorescence Spectrophotometry (GB 7483-87) 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 Water quality - Determination of fluoride - Fluorescent reagent spectrophotometric method 1 Scope of application This standard specifies the fluorine reagent spectrophotometric method for the determination of fluoride in surface water, groundwater and industrial wastewater. This standard applies to the determination of fluoride in surface water, groundwater and industrial wastewater. The detection limit of this method is 0.02 mg/L, and the lower limit of determination is 0.08 mg/L. 2 Principle of the method The fluoride ion reacts with the fluorine reagent and cerium nitrate in an acetate buffer medium with a pH of 4.1 to form a blue ternary complex. The absorbance at 620 nm is proportional to the fluoride ion concentration and the fluoride (F−) is quantified. 3 reagents and materials The reagents used in this standard are analytically pure reagents that meet the national standards unless otherwise stated. The experimental water is newly prepared. Ionic water or fluoride-free distilled water. 3.1 Hydrochloric acid solution. c = 1 mol/L. Take 8.4 ml of hydrochloric acid dissolved in 100 ml of deionized water. 3.2 Sodium hydroxide solution. c = 1 mol/L. Weigh 4 g of sodium hydroxide in 100 ml of deionized water. 3.3 Acetone (CH3COCH3). 3.4 Sulfuric acid (H2SO4). ρ20 = 1.84 g/ml. Take 300 ml of sulfuric acid into a 500 ml beaker, place it on a hot plate for 1 h, cool it, and put it into a bottle for later use. 3.5 Glacial acetic acid (CH3COOH). 3.6 Fluoride standard stock solution. Weigh the pure sodium fluoride (NaF) 0.221 0 g which has been dried at 105 °C for 2 h, dissolved in deionized water. Transfer to a 1 000 ml volumetric flask, dilute to the mark, mix and store in a polyethylene bottle, and use 100 μg of fluoride per ml. 3.7 Fluoride standard use solution. Pipette 20.00 ml of sodium fluoride standard stock solution (3.6), transfer to 1 000 ml volumetric flask, use deionized water Dilute to the mark and store in a polyethylene bottle. This solution contains 2.00 μg of fluoride per ml. 3.8 Fluorine reagent solution. c = 0.001 mol/L. Weigh 0.193 g of fluoro reagent [3 - methylamine - alizarin - diacetic acid, referred to as ALC, C14H7O4 · CH2N (CH2COOH) 2], add 5 ml Wet in deionized water, add sodium hydroxide solution (3.2) to dissolve it, add 0.125 g of sodium acetate (CH3COONa·3H2O), use salt The acid solution (3.1) was adjusted to pH 5.0, diluted to 500 ml with deionized water, and stored in a brown bottle. 3.9......


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