Water quality - Determination of individual isomers of nonylphenol - Method using solid phase extraction (SPE) and gas chromatography/mass spectrometry (GC/MS)
This International Standard specifies a method for the determination of selected individual isomers ofnonylphenol in non-filtered samples of drinking water, waste water, ground water and surface water. The analytes specified in Table 1 can be determined by this method. A total of thirteen isomers (eleven identified isomers and two isomers with tentative identification) constitute more than 90 % of nonylphenol isomers that are detectable in technical preparations and in environmental samples in general. The method is applicable inconcentrations between 0,001 ìg/l and 0,1 ìg/l for individual isomers and from 0,01 ìg/l to 0,2 ìg/l for the sum of 4-nonylphenol