中华人民共和国国家环境保护标准HJ904-2017环境空气多氯联苯混合物的测定气相色谱法Ambient air—Determination of polychlorinated biphenyl mixtures—Gas chromatography（发布稿）本电子版为发布稿请以中国环境出版社出版的正式标准文本为准2017-12-14发布2018-03-01实施环境保护部发布目次前言···············································································································i1适用范围······································································································12规范性引用文件·····························································································13方法原理······································································································14干扰和消除···································································································15试剂和材料···································································································16仪器和设备···································································································37样品·············································································································48分析步骤······································································································69结果计算与表示·····························································································610精密度和准确度····························································································711质量保证和质量控制······················································································812废物的处理··································································································8附录 A（规范性附录）方法的检出限和测定下限···················································10附录 B（资料性附录）化合物一览表··································································11附录 C（资料性附录）多氯联苯工业品的特征峰及标准谱图····································12附录 D（资料性附录）方法的精密度和准确度······················································16前言为贯彻《中华人民共和国环境保护法》和《中华人