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HJ/T 83-2001

Chinese Standard: 'HJ/T 83-2001'
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HJ/T 83-2001
HJ
NATIONAL ENVIRONMENTAL PROTECTION STANDARD
OF THE PEOPLE’S REPUBLIC OF CHINA
Water quality - Determination of adsorbable
organic halogen - Ion chromatography method
水质 可吸附有机卤素(AOX)的测定 离子色谱法
ISSUED ON. DECEMBER 19, 2001
IMPLEMENTED ON. APRIL 01, 2002
Issued by. General Administration of Environmental Protection
Table of Contents
Foreword ... 3 
1 Subject content and scope ... 4 
2 Definitions ... 4 
3 Method and principle ... 5 
4 Reagents and materials ... 5 
5 Apparatuses and instruments ... 7 
6 Sample collection and preservation ... 9 
7 Analysis steps ... 9 
8 Calculation and result expression ... 12 
9 Method precision and accuracy ... 14 
10 Description ... 14 
Appendix A ... 16 
Appendix B ... 17 
Foreword
The pre-treatment method (place the activated carbon absorbed with organics in high
temperature furnace to burn, decompose, and transfer into inorganic halides) of water
sample specified in this Standard is basically the same as ISO 9562.1989-09-01 and
GB/T 15959-1995 “Water quality - Determination of adsorbable organic halogens
(AOX) - Microcoulometric method”, however, the detecting methods are different. This
Standard specifies that using ion chromatography method to detect inorganic halogen
ion that is produced and transferred from organic halogen. It can determine not only
the total (in chlorine) of adsorbable organic halogens (AOX) in water, but also the
adsorbable organic chlorine (AOCl), adsorbable organic fluorine (AOF) and
adsorbable organic bromine (AOBr) in water.
Appendix A and appendix B in this Standard are normative.
This Standard shall be under the jurisdiction of General Administration of
Environmental Protection - Science, Technology and Standard Division.
Drafting organization of this Standard. Shenyang Environmental Monitoring Center
Station.
This Standard is first-time released, and it shall be implemented from April 1, 2002.
This Standard shall be interpreted by General Administration of Environmental
Protection.
Water quality - Determination of adsorbable organic
halogen (AOX) - Ion chromatography method
1 Subject content and scope
1.1 Subject content
This Standard specifies ion chromatography method that determines adsorbable
organic halogen (AOX) in water.
1.2 Scope
This Standard applies to determine adsorbable organic halogen (AOX) in water and
polluted water, including adsorbable organic chlorine (AOCl), adsorbable organic
fluorine (AOF) and adsorbable organic bromine (AOBr).
When sample volume is between 50 and 200 ml, it can determine that the
concentration range of adsorbable organic chlorine (AOCl) is 15~600 µg/L, the
concentration range of adsorbable organic fluorine (AOF) is 5~300 µg/L, and the
concentration range of adsorbable organic bromine (AOBr) is 9~1200 µg/L.
1.3 Interference and elimination
1.3.1 Inorganic halogen ion in water, during the sample enrichment process, also can
partly remain in activated carbon to interfere the determination. Use 20 ml of washing
liquid of acidic sodium nitrate (4.12) to leach the activated carbon adsorption column,
so that the interference can be eliminated entirely.
1.3.2 When there are insoluble chloride and biological cells (such as microorganism
and alga) etc. in the water sample, the determination result will be higher; use nitrate
(4.9) to adjust the pH value to be within 1.5~2.0; analyze it after 8 h.
1.3.3 When there is active chlorine in the water sample, the determination result of
AOCl will be higher. Add 5 ml of sodium sulfite solution (4.8) immediately in 100 ml of
water sample, after sampling.
2 Definitions
2.1 adsorbable organic halogen (AOX)
It refers to the total (calculated by Cl) of halogen elements (including fluorine, chlorine
and bromine) which can be adsorbed by activated carbon and can be combined on the
organic compound, under the conditions specified by this Standard.
2.2 adsorbable organic chlorine (AOCl)
It refers to the total of chlorine which can be adsorbed by activated carbon and can be
combined on the organic compound, under the conditions specified by this Standard.
2.3 adsorbable organic fluorine (AOF)
It refers to the total of fluorine which can be adsorbed by activated carbon and can be
combined on the organic compound, under the conditions specified by this Standard.
2.4 adsorbable organic bromine (AOBr)
It refers to the total of bromine which can be ad......
Related standard:   HJ 84-2016  HJ 77.1-2008
   
 
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