HJ 550-2009 (HJ550-2009)

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Related Standard	Status	PDF
HJ 550-2009	English	359	Add to Cart	3 days [Need to translate]	Water quality. Determination of cobalt. 5-CI-PADAB spectrophotometry	HJ 550-2009	Obsolete	HJ 550-2009

HJ 550-2009
Water quality.Determination of cobalt.5-CI-PADAB spectrophotometry
National Environmental Protection Standard of the People's Republic
Determination of total cobalt in water
Spectrophotometry (tentative)
Water quality-Determination of cobalt
-5-Cl-PADAB spectrophotometry
Released.2009-12-30
2010-04-01 Implementation
Ministry of Environmental Protection released
Ministry of Environmental Protection
announcement
No. 74 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 lead gas of fixed pollution sources.
The four standards, such as the determination of flame atomic absorption spectrophotometry (tentative), are national environmental protection standards and are released.
The standard name and number are as follows.
I. Determination of lead in fixed pollution sources - Flame atomic absorption spectrophotometry (tentative) (HJ 538-2009);
2. Determination of lead in ambient air by graphite furnace atomic absorption spectrophotometry (tentative) (HJ 539-2009);
III. Determination of arsenic in ambient air and exhaust gases - Spectrophotometric method of silver diethyldithiocarbamate (interim) (HJ 540-2009);
4. Determination of gaseous arsenic in the production of yellow phosphorus - Determination of silver diethyldithiocarbamate spectrophotometry (interim) (HJ 541-2009);
V. Determination of mercury in ambient air - Enrichment of sulfhydryl cotton - Cold atomic fluorescence spectrophotometry (interim) (HJ 542-2009);
6. Determination of mercury in fixed pollution sources - Cold atomic absorption spectrophotometry (provisional) (HJ 543-2009);
VII. Determination of Sulfuric Acid Fog of Fixed Pollution Sources by Ion Chromatography (Provisional) (HJ 544-2009);
VIII. Determination of gaseous total phosphorus in fixed pollution sources - Determination of quinolinol ketone capacity (provisional) (HJ 545-2009);
IX. Determination of Phosphorus Pentoxide in Ambient Air Ascorbic Acid Reduction - Molybdenum Blue Spectrophotometry (Provisional) (HJ 546-2009);
X. Determination of chlorine gas from fixed pollution sources, iodometric method (provisional) (HJ 547-2009);
XI. Determination of hydrogen chloride in fixed source pollution. Silver nitrate capacity method (provisional) (HJ 548-2009);
12. Determination of hydrogen chloride in ambient air and exhaust gas Ion chromatography (interim) (HJ 549-2009);
14. Determination of Chlorine Dioxide in Water Quality Iodometric Method (Provisional) (HJ 551-2009).
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.
Special announcement.
December 30,.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.3
7 Analysis steps..3
8 result calculation..4
9 precision and accuracy..4
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
To develop and standardize the monitoring methods for cobalt in water.
This standard specifies the 5-chloro-2-(pyridylazo)-1,3-diaminobenzene spectrophotometric method for the determination of total cobalt in water.
This standard was formulated by the Science and Technology Standards Department of the Ministry of Environmental Protection.
This standard was drafted. Beijing Environmental Protection Monitoring Center.
This standard was approved by the Ministry of Environmental Protection on December 30,.2009.
This standard has been implemented since April 1,.2010.
This standard is explained by the Ministry of Environmental Protection.
Iv
Determination of total cobalt in water
5-Chloro-2-(pyridylazo)-1,3-diaminobenzene spectrophotometry (interim)
1 Scope of application
This standard specifies the 5-chloro-2-(pyridylazo)-1