Announcement on the release of five national environmental protection standards including "Determination of Air and Exhaust Gas Ammonia Spectrophotometry"

In order to implement the "Environmental Protection Law of the People's Republic of China", to protect the environment and protect human health, five standards, including "Ambient Air and Exhaust Gas Determination of Nessler's Reagent Spectrophotometry", are approved as national environmental protection standards and are released.

The standard name and number are as follows:

1. "Determination of Ambient Air and Exhaust Gas Ammonia Spectrophotometry" (HJ 533-2009)

2. "Ambient Air Determination of Sodium Hypochlorite-Salicylic Acid Spectrophotometry" (HJ 534-2009)

3. "Determination of Ammonia Nitrogen in Water Quality-Nessler's Reagent Spectrophotometry" (HJ 535-2009)

4. "Determination of Ammonia Nitrogen in Water Quality by Salicylic Acid Spectrophotometry" (HJ 536-2009)

5. "Determination of Ammonia Nitrogen in Water-Distillation-Neutralization Titration Method" (HJ 537-2009)

The above standards will be implemented from April 1, 2010 and published by China Environmental Science Press. The standards can be found on the website of the Ministry of Environmental Protection (bz.mep.gov.cn).

Since the implementation of the above standards, the following five national environmental protection standards approved and promulgated by the original State Environmental Protection Administration shall be abolished. The standard names and numbers shall be as follows:

1. "Determination of Air Quality Ammonia Colorimetric Method" (GB / T 14668-93);

2. "Determination of air quality ammonia sodium hypochlorite-salicylic acid spectrophotometry" (GB / T 14679-93);

3. "Determination of water quality ammonium colorimetric method" (GB 7479-87);

4. "Determination of water quality ammonium salicylic acid spectrophotometry" (GB 7481-87);

5. "Determination of Water Quality Ammonium Distillation and Titration Method" (GB 7478-87).

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