HJ/T 83-2001: Water quality - Determination of absorbable organic halogen - Ion chromatography method

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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.

Basic Data

Standard ID	HJ/T 83-2001 (HJ/T83-2001)
Description (Translated English)	Water quality - Determination of absorbable organic halogen - Ion chromatography method
Sector / Industry	Environmental Protection Industry Standard (Recommended)
Classification of Chinese Standard	Z16
Word Count Estimation	11,171
Date of Issue	2001-12-19
Date of Implementation	2002-04-01
Summary	This standard specifies the determination of adsorbable organic halogens (AOX) by ion chromatography. This standard applies to the determination of water and sewage adsorbable organic halogens (AOX), including adsorption of organic chlorine (AOCl), organic fluorine (AOF) and organic Australia (AOBr).