HJ 592-2010
Water quality.Determination of nitrobenzene-compounds by gas chromatography
National Environmental Protection Standard of the People's Republic
Replace GB 4919-85
Determination of water quality nitrobenzene compounds
Gas chromatography
Water quality-Determination of nitrobenzene-compounds
By gas chromatography
Released on.2010-10-21
2011-01-01 Implementation
Ministry of Environmental Protection released
Ministry of Environmental Protection
announcement
No. 77 of.2010
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 ambient air ozone.
Six standards, such as the fixed ultraviolet photometry, are national environmental protection standards and are released.
The standard name and number are as follows.
1. Determination of ambient air ozone by ultraviolet photometry (HJ 590-2010);
2. Determination of water quality pentachlorophenols by gas chromatography (HJ 591-2010);
4. Determination of water quality, elemental phosphorus, phosphorus molybdenum blue spectrophotometry (provisional) (HJ 593-2010);
5. Determination of the total amount of water-based developer and its oxides - Iodine-starch spectrophotometry (interim) (HJ 594-2010);
6. Determination of the total amount of water color developing agent 169 Coupler spectrophotometry (provisional) (HJ 595-2010).
The above standards have been implemented since January 1,.2011 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 three national environmental protection standards approved and issued by the former National Environmental Protection Agency shall be abolished.
The name and number are as follows.
1. Determination of ambient air ozone by ultraviolet spectrophotometry (GB/T 15438-1995);
2. Determination of water quality pentachlorophenols by gas chromatography (GB 8972-88);
3. Determination of Total Nitro Compounds in Industrial Wastewater Gas Chromatography (GB 4919-85).
Special announcement.
October 21,.2010
Content
Foreword..iv
1 Scope..1
2 Method principle..1
3 reagents and materials.1
4 instruments and equipment. 2
5 samples. 2
6 Analysis steps..3
7 Calculation and representation of results..4
8 precision and accuracy..4
9 Quality Assurance and Quality Control 5
Appendix A (Normative Appendix) Sample Purification..6
Appendix B (informative) Precision and accuracy of the method 7
Iv
Foreword
To protect the environment and protect the human body in order to implement the Environmental Protection Law of the People's Republic of China and the Law of the People's Republic of China on Water Pollution Prevention and Control
This standard is formulated for the determination of nitrobenzene compounds in industrial wastewater and domestic sewage.
This standard specifies gas chromatography for the determination of nitrobenzene compounds in industrial wastewater and domestic sewage.
This standard is a revision of the "Gas Chromatography for the Determination of Total Nitro Compounds in Industrial Wastewater" (GB 4919-85).
This standard was first published in 1985. The original standard drafting unit was the Fifth Design Institute of the Ministry of Weapons Industry and the State-owned Qingyang Chemical Plant. This time is
First revision. The main contents of the revision are as follows.
-- Amend the standard name to "Gas Chromatography for the Determination of Water Nitrobenzene Compounds";
- replacing the packed column with a capillary column;
-- changed the extraction solvent and dosage;
- modified the quantitative method of nitrobenzene compounds;
- Modified the method for determination of 2,4,6-trinitrobenzoic acid;
-- Added quality assurance and quality control provisions.
From the date of implementation of this standard, the national environmental protection standard “Industry” approved and issued by the former State Environmental Protection Administration on August 1, 1985