摘要
采用同位素稀释法、高分辨气相色谱/质谱检测垃圾焚烧主要工艺段捕集灰中的二英.垃圾焚烧炉预热器、过热器和布袋除尘器捕集灰中二英(PCDD/Fs)的浓度分别为1025ng·g-1,1249ng·g-1和4670ng·g-1,毒性当量(ITEQ)为0073ng·g-1,0026ng·g-1和811ng·g-1.同时,分析了不同氯原子数取代的二英同系物在预热器、过热器、布袋除尘器捕集灰中的变化和对ITEQ值的贡献.
This paper presents the distribution pattern of dioxins in collected ash of different craftwork stages of waste incinerator with isotopic dilution and high resolution gas chromatography/mass spectrometry.The determined results indicate that the concentrations of polychlorinated dibenzo p dioxins and polychlorinated dibenzofurans(PCDD/Fs)in collected ash of preheater,superheater and bag filter of waste incinerator were 10 25ng·g -1 ,1 249ng·g -1 and 467 0ng·g -1 ,respectively,and the total toxicity equivalent(I TEQ)values are 0 073ng·g -1 ,0 026ng·g -1 and 8 110ng·g -1 .The trend of different chlorines substituted toxic PCDD/Fs analogues and the contribution for I TEQ in the collected ash of preheater,superheater,bag filter are also discussed.
出处
《环境化学》
CAS
CSCD
北大核心
2004年第6期686-690,共5页
Environmental Chemistry
基金
国家重点基础研究计划资助课题(2003CB415001)
