HJ 504-2009

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Related Standard	Status	PDF
HJ 504-2009	English	269	Add to Cart	3 days	Ambient air. Determination of ozone. Indigo disulphonate spectrophotometry	HJ 504-2009	Valid	HJ 504-2009

HJ 504-2009
Ambient air.Determination of ozone.Indigo disulphonate spectrophotometry
HJ
National Environmental Protection Standard of the People's Republic
Replace GB/T 15437-1995
Determination of ambient air ozone
Indigo disulphonate spectrophotometry
Ambient air-Determination of ozone
-Indigo disulphonate spectrophotometry
Released on.2009-10-20
2009-12-01 Implementation
Ministry of Environmental Protection released
Ministry of Environmental Protection
announcement
No. 54 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 total organic carbon in water quality.
Six standards, such as the combustion oxidation-non-dispersive infrared absorption method, are national environmental protection standards and are released.
The standard name and number are as follows.
I. Determination of total organic carbon in water by combustion oxidation-non-dispersive infrared absorption method (HJ 501-2009);
2. Determination of brominated volume of volatile phenols in water (HJ 502-2009);
3. Determination of volatile phenols in water - 4-aminoantipyrine spectrophotometric method (HJ 503-2009);
V. “Determination of Biochemical Oxygen Demand (BOD5) on the 5th Day of Water Quality Dilution and Inoculation Method” (HJ 505-2009);
6. "Electrochemical Probe Method for Determination of Dissolved Oxygen in Water" (HJ 506-2009).
The above standards have been implemented since December 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.
The following seven national rings approved and issued by the former National Environmental Protection Agency or the former State Environmental Protection Administration from the date of implementation of the above standards
The environmental protection standards are abolished. The standard names and numbers are as follows.
1. "Measurement of total organic carbon (TOC) for water quality by non-dispersive infrared absorption method" (GB 13193-91);
2. Determination of total organic carbon in water by combustion oxidation-non-dispersive infrared absorption method (HJ/T 71-2001);
3. Determination of volatile phenols in water quality and bromination capacity after distillation (GB 7491-87);
4. Determination of volatile phenols in water - 4-aminoantipyrine spectrophotometric method after distillation (GB 7490-87);
V. Determination of ozone in ambient air - Spectrophotometric method of sodium indigo disulphonate (GB/T 15437-1995);
6. "Determination of the Biochemical Oxygen Demand (BOD5) on the 5th Day of Water Quality Dilution and Inoculation Method" (GB 7488-87);
VII. Determination of Dissolved Oxygen in Water by Electrochemical Probe Method (GB 11913-89).
Special announcement.
October 20,.2009
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 results indicate ..3
8 Accuracy and precision..3
9 Notes. 4
Appendix A (Normative) A standard curve is drawn using a known mass concentration of ozone standard gas..5
Foreword
To protect the environment and protect people 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 the Prevention and Control of Air Pollution
This standard is formulated for the health of the body and the monitoring method for the regulation of ozone in the ambient air.
This standard specifies the indigo disulphonate spectrophotometric method for the determination of ozone in ambient air.
This standard is a revision of the "Measurement of ambient air ozone by indigo disulfonate spectrophotometry" (GB/T 15437-1995).
This standard was first published in.1995. The original drafting unit was the Shenyang Environmental Monitoring Center Station. This is the first revision.
The main contents of this revision are as follows.
-- Revised the scope of application of the standard, increasing the upper limit of measurement and the lo