ISO 13876:2013 土壌品質 — 質量選択検出器を備えたガスクロマトグラフィー（GC-MS）および電子捕獲型検出器を備えたガスクロマトグラフィー（GC-ECD）によるポリ塩素化ビフェニル（PCB）の測定 | ページ 2

Foreword

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The committee responsible for this document is ISO/TC 190, Soil quality, Subcommittee SC 3, Chemical methods and soil characteristics.

Introduction

Polychlorinated biphenyls (PCB) have been widely used as additives in industrial applications where chemical stability has been required. This stability, on the other hand, creates environmental problems when PCBs are eventually released into the environment. Since some of these PCB compounds are highly toxic, their presence in the environment (air, water, soil, sediment, and waste) is regularly monitored and controlled. At present, determination of PCB is carried out in these matrices in most of the routine laboratories following the preceding steps for sampling, pretreatment, extraction, and clean-up by measurement of specific PCB by means of gas chromatography in combination with mass spectrometric detection (GC-MS) or gas chromatography with electron capture detector (GC-ECD).

The European Standard EN 16167:2012 on which this International Standard is based, was developed in the European project 'HORIZONTAL'. It is the result of a desk study “3-12 PCB” and aims at evaluation of the latest developments in assessing PCBs in sludge, soil, treated biowaste, and neighbouring fields. Taken into account the different matrices and possible interfering compounds, this European Standard does not contain one possible way of working. Several choices are possible, in particular, relating to clean-up. Detection with both MS-detection and ECD-detection is possible. Two different extraction procedures and 11 clean-up procedures are described. The use of internal and injection standards is described in order to have an internal check on choice of the extraction and clean-up procedure. The method is, as far as possible, in agreement with the method described for PAHs (see ISO 13859). It has been tested for ruggedness.

This International Standard is applicable and validated for several types of matrices as indicated in Table 1 (see also Annex A for the results of the validation).

1 Scope

This International Standard specifies a method for quantitative determination of seven selected polychlorinated biphenyls (PCB28, PCB52, PCB101, PCB118, PCB138, PCB153, and PCB180) in sludge, treated biowaste, and soil using GC-MS and GC-ECD (see Table 2).

The limit of detection depends on the determinants, the equipment used, the quality of chemicals used for the extraction of the sample, and the clean-up of the extract.

Under the conditions specified in this International Standard, a limit of application of 1 µg/kg (expressed as dry matter) can be achieved.

Sludge and treated biowaste can differ in properties and also in the expected contamination levels of PCBs and presence of interfering substances. These differences make it impossible to describe one general procedure. This International Standard contains decision tables based on the properties of the sample and the extraction and clean-up procedure to be used.

2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

3 Terms and definitions

For the purposes of this document, the following terms and definitions apply.

Bibliography