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ISO/TS 16780:2015

Water quality -- Determination of polychlorinated naphthalenes (PCN) -- Method using gas chromatography (GC) and mass spectrometry (MS)

SKU: iso_068420_160807 Published by ISO Publication Year 2015 1 Edition 49 pages

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ISO/TS 16780:2015 specifies a method for the determination of polychlorinated naphthalenes (PCNs), where poly means mono to octa, in waters and waste waters [containing less than 2 g/l solid particulate material (SPM)] using high resolution gas chromatography?high resolution mass spectrometry (HRGC?HRMS).

NOTE 1 The congeners analysed by this method are listed in Table 1.

The working range of the method is 20 pg/l to 8 ng/l. The method is optimized for PCNs, but can be modified to include other coplanar compounds such as polychlorinated dioxins and furans (PCDDs/PCDFs) and dioxin-like tetra- to heptachlorinated biphenyls (dlPCBs). This method can be used to determine PCNs in other matrices (e.g. biota, sediments, air); however, additional clean-up steps and techniques can be necessary for samples with high organic loadings. Low resolution mass spectrometry (LRMS) and mass spectrometry?mass spectrometry (MS?MS) can be used.

NOTE 2 LRMS and MS?MS conditions are summarized in Annex A.

Both LRMS and MS?MS can be less selective than HRMS and there is a possibility of bias due to interfering compounds if these techniques are used.

The detection limits and quantification levels in this method are dependent on the level of interferences as well as instrumental limitations.

NOTE 3 The minimum levels (ML) in Table 4 are the levels at which the PCNs can typically be determined with no interferences present.

This method is performance based. The analyst is permitted to modify the method, e.g. to overcome interferences, provided that all performance criteria in this method are met.

NOTE 4 The requirements for establishing method validation or equivalency are given in Clause 9.

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GST REG No R119441681
QST REG No R1006017360

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ISO/TS 16780:2015

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