BS ISO 7981-1:2005

Foreword
Introduction
1 Scope
2 Principle
3 Interferences
4 Reagents
5 Apparatus
6 Sampling
7 Procedure
8 Evaluation
9 Calibration
10 Determination of the recovery
11 Blank measurements
12 Calculation
13 Expression of results
14 Test report
15 Accuracy
Annex A (informative) - R[f] values of the six PAH under
        various chromatographic conditions
Annex B (informative) - Spectroscopic identification
Annex C (informative) - Examples for the construction of
        special apparatus
Annex D (informative) - Accuracy
Bibliography

Provides the determination of six selected PAH in drinking water by high-performance thin-layer chromatography with fluorescence detection after liquid-liquid extraction.

This part of ISO 7981 specifies the determination of six selected PAH in drinking water by high-performance thin-layer chromatography with fluorescence detection after liquid-liquid extraction. The six PAH are: fluoranthene, benzo[b]fluoranthene, benzo[a]pyrene, benzo[k]fluoranthene, indeno[1,2,3-cd]pyrene, and benzo[ghi]perylene (see Table 1).

A screening method (method A) is described to exclude those samples containing less than 20 % of the limit values given in References [1], [2], [3] and [4].

A quantitative method (method B) is also described, with a working range of 40 ng/l to 240 ng/l (sum of 6 PAH). Higher concentrations can be determined by using a smaller aliquot of the sample.

With some modifications, this method is also applicable for the analysis of ground waters and moderately polluted surface waters.