HJ 534-2009 (HJ534-2009)

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HJ 534-2009	English	289	Add to Cart	3 days [Need to translate]	Ambient air. Determination of ammonia. Sodium hypochlorite-salicylic acid spectrophotometry	HJ 534-2009	Valid	HJ 534-2009

HJ 534-2009
Ambient air.Determination of ammonia.Sodium hypochlorite-salicylic acid spectrophotometry
National Environmental Protection Standard of the People's Republic
Replace GB/T 14679-93
Determination of ambient air ammonia
Sodium hypochlorite-salicylic acid spectrophotometry
Ambient air-Determination of ammonia
-Sodium hypochlorite-salicylic acid spectrophotometry
Published on December 12,.2009
2010-04-01 Implementation
Ministry of Environmental Protection released
Ministry of Environmental Protection
announcement
No. 77 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 "Ammonia of ambient air and exhaust gas.
The five standards, such as the determination of Nessler's reagent spectrophotometry, are national environmental protection standards and are released.
The standard name and number are as follows.
I. Determination of Ammonia Reagent Spectrophotometry for Ambient Air and Exhaust Gas Ammonia (HJ 533-2009);
3. Determination of Ammonia Nitrogen in Water Quality by Nessler Reagent Spectrophotometry (HJ 535-2009);
4. Determination of Ammonia Nitrogen in Water Quality by Salicylic Acid Spectrophotometry (HJ 536-2009);
V. Determination of Ammonia Nitrogen in Water Quality - Neutralization and Titration (HJ 537-2009).
The above standards have been implemented since April 1,.2010 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 five national environmental protection standards approved and issued by the former National Environmental Protection Agency shall be abolished.
The name and number are as follows.
I. Determination of Air Quality Ammonia by Nessler Reagent Colorimetric Method (GB/T 14668-93);
2. Determination of Ammonia for Air Quality - Sodium Hypochlorite - Salicylic Acid Spectrophotometry (GB/T 14679-93);
Third, "the determination of ammonium water quality Nessler reagent colorimetric method" (GB 7479-87);
4. Determination of Ammonium in Water Quality by Salicylic Acid Spectrophotometry (GB 7481-87);
V. Determination of Distillation and Titration of Ammonium Water (GB 7478-87).
Special announcement.
December 31,.2009
Content
Foreword..iv
1 Scope..1
2 Method principle..1
3 interference and elimination.1
4 Reagents and materials.1
5 instruments and equipment. 2
6 samples. 2
7 Analysis steps..2
8 result calculation..3
9 Accuracy and precision..3
10 Quality Assurance and Quality Control.4
Appendix A (Normative) Preparation method of sodium hypochlorite solution and calibration of available chlorine concentration and free alkali concentration..5
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"
Health, standard ammonia monitoring methods, the development of this standard.
This standard specifies the sodium hypochlorite-salicylic acid spectrophotometric method for the determination of ammonia in ambient air.
This standard amends the determination of air quality ammonia by sodium hypochlorite-salicylic acid spectrophotometry (GB/T 14679-93).
This standard was first published in.1993. The original standard drafting unit was Shenyang Institute of Environmental Sciences. This is the first revision. This revision
The main contents are as follows.
-- Increased sampling of ambient air.
-- Identify the detection limits and lower limits of the method.
-- Added a full blank of sampling.
-- Combine the calculation formula.
-- Added normative appendices.
As of the date of implementation of this standard, the air quality ammonia test approved and issued by the former National Environmental Protection Agency on October 27,.1993
Sodium hypochlorite-salicylic acid spectrophotometry (GB/T 14679-93) is abolished.
Appendix A of this standard is a normative appendix.
This standard was formulated by the Science and Technology Standards Departme