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Homepage>BS Standards>13 ENVIRONMENT. HEALTH PROTECTION. SAFETY>13.060 Water quality>13.060.50 Examination of water for chemical substances>BS 6068-2.12:1990 Water quality. Physical, chemical and biochemical methods Determination of phenol index: 4-aminoantipyrine (4-aminophenazone) spectrometric methods after distillation
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BS 6068-2.12:1990 Water quality. Physical, chemical and biochemical methods Determination of phenol index: 4-aminoantipyrine (4-aminophenazone) spectrometric methods after distillation

BS 6068-2.12:1990

Water quality. Physical, chemical and biochemical methods Determination of phenol index: 4-aminoantipyrine (4-aminophenazone) spectrometric methods after distillation

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Standard number:BS 6068-2.12:1990
Pages:16
Released:1990-11-30
ISBN:0 580 19060 9
Status:Standard
DESCRIPTION

BS 6068-2.12:1990


This standard BS 6068-2.12:1990 Water quality. Physical, chemical and biochemical methods is classified in these ICS categories:
  • 13.060.50 Examination of water for chemical substances

This International Standard specifies methods for determining the phenol index (3.2) in drinking waters, surface waters and waste waters.

After a preliminary distillation, the test samples are analysed according to specific application as follows:

method A (direct colorimetric method): this method is capable of measuring the phenol index in test samples that contain more than 0,10 mg/l in the aqueous phase (without chloroform extraction), using phenol as a standard;

method B (chloroform extraction method): this method is capable of measuring the phenol index without dilution from about 0,002 mg/l to about 0,10 mg/l when the coloured end-product is extracted and concentrated in chloroform phase, using phenol as a standard.

NOTE 1 The limits of detection achievable with both methods are insufficient for checking compliance with the limits given in the Directive 80/778/EEC for drinking water.

NOTE 2 According to the results of a German interlaboratory trial using a method almost identical to method B, the lower limit of detection is 0,01 mg/l.


Applicable to drinking waters, surface waters and waste waters, containing phenol concentrations above about 0.002 mg/l.