ISO/TS 16780:2015规定了一种使用高分辨率气相色谱法测定水和废水[含有小于2 g/l的固体颗粒物（SPM）]中多氯萘（PCN）的方法，其中“聚”是指“单”到“八”？高分辨率质谱（HRGC？HRMS）。 注1:表1列出了通过该方法分析的同系物。 该方法的工作范围为20 pg/l至8 ng/l。该方法针对PCN进行了优化，但可以修改为包括其他共面化合物，如多氯二恶英和呋喃（PCDDs/PCDFs）以及类似二恶英的四到七氯联苯（dlPCBs）。该方法可用于测定其他基质（如生物群、沉积物、空气）中的PCN；然而，额外的清洁- 对于有机物含量高的样品，可能需要采取步骤和技术。低分辨率质谱（LRMS）和质谱？可以使用质谱（MS？MS）。 注2 LRMS和MS？MS状况总结见附录A。 LRMS和MS？MS的选择性可能低于HRMS，如果使用这些技术，可能会因干扰化合物而产生偏差。 该方法的检测限和定量水平取决于干扰水平和仪器限制。 注3:表4中的最低水平（ML）是通常在不存在干扰的情况下确定PCN的水平。 这种方法是基于性能的。分析员可以修改方法，例如。 g、 以克服干扰，前提是满足该方法中的所有性能标准。 注4:第9条给出了建立方法验证或等效性的要求。

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.