Standard No.:	HJ 77.1-2025
English Name:	Water quality—Determination of polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans—Isotope dilution / high resolution gas chromatography-high resolution mass spectrometry
Chinese Name:	水质 二噁英类的测定 同位素稀释/高分辨气相色谱-高分辨质谱法
Chinese Classification:	Z10    Environmental pollutant monitoring methods
Professional Classification:	HJ    Professional Standard - Environment
ICS Classification:	13.060.01 13.060.01    Water quality in general 13.060.01
Source Content Issued by:	MEE
Issued on:	2025-12-22
Implemented on:	2026-7-1
Status:	to be valid
Superseding:	HJ 77.1-2008 Water - Determination of polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) - Isotope dilution HRGC-HRMS
Target Language:	English
File Format:	PDF

本标准规定了测定水中二噁英类的同位素稀释/高分辨气相色谱-高分辨质谱法。
本标准适用于地表水、地下水、生活污水、工业废水和海水中二噁英类的测定。
样品取样量为10 L，定容体积为20 μL时，2,3,7,8-氯代二噁英类的方法检出限为0.04pg/L～0.4 pg/L，测定下限为0.16 pg/L～1.6 pg/L。详见附录A。