中华人民共和国国家生态环境标准 HJ77.2—2025代替 HJ 77.2—2008 环境空气和废气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 Ambient air and flue gas—Determination ofpolychlorinated dibenzo-p-dioxinsandpolychlorinateddibenzofurans—Isotopedilution /high resolution gas chromatography-high resolution mass spe...
