HJ 491-2009_English: PDF (HJ491-2009)
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Soil quality. Determination of total chromium. Flame atomic absorption pectrometry
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HJ 491-2009
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HJ 491-2009
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| Standard ID | HJ 491-2009 (HJ491-2009) | | Description (Translated English) | Soil quality. Determination of total chromium. Flame atomic absorption pectrometry | | Sector / Industry | Environmental Protection Industry Standard | | Classification of Chinese Standard | Z18 | | Classification of International Standard | 13.080 | | Word Count Estimation | 10,179 | | Date of Issue | 2009-09-27 | | Date of Implementation | 2009-11-01 | | Older Standard (superseded by this standard) | GB/T 17137-1997 | | Drafting Organization | China Environmental Monitoring Station | | Administrative Organization | Ministry of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 total chromium in soil by flame atomic absorption spectrophotometry. This standard applies to the determination of total chromium in soil. Weigh 0. 5g sample digestion volume to 50ml, the method detection limit of 5mg/kg, detection limit is 20. 0mg/kg. | HJ 491-2009
Soil quality.Determination of total chromium.Flame atomic absorption pectrometry
HJ
National Environmental Protection Standard of the People's Republic
Replace GB/T 17137-1997
Determination of total chromium in soil
Flame atomic absorption spectrophotometry
Soil quality-Determination of total chromium
-Flame atomic absorption spectrometry
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);
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
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