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华南某垃圾焚烧厂排放PCBs和PCNs的固气分布、同系物分布及毒性当量特征

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赵曦, 李娟, 陆克定, 黄晓英. 华南某垃圾焚烧厂排放PCBs和PCNs的固气分布、同系物分布及毒性当量特征[J]. 环境化学, 2015, 34(7): 1268-1274. doi: 10.7524/j.issn.0254-6108.2015.07.2015020401
引用本文: 赵曦, 李娟, 陆克定, 黄晓英. 华南某垃圾焚烧厂排放PCBs和PCNs的固气分布、同系物分布及毒性当量特征[J]. 环境化学, 2015, 34(7): 1268-1274. doi: 10.7524/j.issn.0254-6108.2015.07.2015020401
shu
ZHAO Xi, LI Juan, LU Keding, HUANG Xiaoying. Characterization of particle/gas partition, congener patterns, and TEQ of PCBs and PCNs released from a municipal solid waste incinerator (MSWI) in South China[J]. Environmental Chemistry, 2015, 34(7): 1268-1274. doi: 10.7524/j.issn.0254-6108.2015.07.2015020401
Citation: ZHAO Xi, LI Juan, LU Keding, HUANG Xiaoying. Characterization of particle/gas partition, congener patterns, and TEQ of PCBs and PCNs released from a municipal solid waste incinerator (MSWI) in South China[J]. Environmental Chemistry, 2015, 34(7): 1268-1274. doi: 10.7524/j.issn.0254-6108.2015.07.2015020401
shu

华南某垃圾焚烧厂排放PCBs和PCNs的固气分布、同系物分布及毒性当量特征

  • 1.

    深圳市环境科学研究院, 深圳, 518001;

  • 2.

    北京大学环境科学与工程学院, 北京, 100871

  • 基金项目:

    国家自然科学基金项目(41375124)

    深圳市人居环境委员会环境科研专项基金项目(SZGX2012118D-SCZJ)资助.

Characterization of particle/gas partition, congener patterns, and TEQ of PCBs and PCNs released from a municipal solid waste incinerator (MSWI) in South China

  • 1.

    Shenzhen Academy of Environmental Sciences, Shenzhen, 518001, China;

  • 2.

    College of Environmental Science and Engineering, Peking University, Beijing, 100871, China

  • Fund Project:

  • 摘要: 以华南某城市生活垃圾焚烧厂一期(WI-A)和二期(WI-B)为研究对象,采集了飞灰和烟气样品,通过GC/MS对其中PCBs和PCNs的全部单体进行了测定,分析了PCBs和PCNs的固气分布(飞灰和烟气中的总量比例)、同系物分布以及毒性当量特征.结果表明,WI-A和WI-B焚烧单位垃圾产生的PCBs和PCNs总量分别为0.397 mg·t-1(湿基)和0.363 mg·t-1(湿基).活性炭喷射量对PCBs的固气分布特征和去除率影响较大,对PCNs则不明显.PCBs同系物在烟气中以低氯取代单体为主,在飞灰中以高氯取代单体为主.PCNs同系物在烟气中以五氯单体为主,在飞灰中以四氯、五氯单体为主.WI-A和WI-B排放的烟气总TEQ分别为0.051 ng TEQ·Nm-3和0.096 ng TEQ·Nm-3,WI-A烟气Co-PCBs和Dl-PCNs对总TEQ的贡献率分别为3.2%和0.13%,WI-B烟气Co-PCBs和Dl-PCNs对总TEQ的贡献率分别为5.3%和0.34%,提示垃圾焚烧排放烟气中的Co-PCBs和Dl-PCNs的毒性同样值得关注.
    Abstract: Individual congeners of polychlorinated biphenyl (PCB) and polychlorinated naphthalene (PCN) were determined in the stack gas and fly ash from the two phases of a municipal solid waste incinerator (MSWI) in South China using GC/MS. In addition, the particle/gas partitioning, congener patterns, and toxic equivalents (TEQ) of PCBs and PCNs were characterized. The total PCBs and PCNs released from phase one (WI-A) and phase two (WI-B) were 0.397 mg·t-1 and 0.363 mg·t-1 of wet waste, respectively. The injection rate of activated carbon significantly affected the particle/gas partitioning and removal efficiency of PCBs, while not for that of PCNs. In stack gas samples, lower chlorinated congeners and penta-CNs dominated the profiles of PCB and PCN, respectively; while in fly ash samples, higher chlorinated congeners and tetra- to penta-CNs dominated instead. The total TEQ of stack gas from WI-A and WI-B were 0.051 ng·Nm-3 and 0.096 ng·Nm-3, respectively. The contributions of coplanar PCBs (Co-PCBs) and dioxin-like PCNs (Dl-PCNs) to the total TEQ were 3.2% and 0.13% for WI-A, and 5.3% and 0.34% for WI-B, respectively, implying that the toxicity of Co-PCBs and Dl-PCNs released by MSWI deserves serious attention.
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  • 收稿日期:  2015-02-04
  • 刊出日期:  2015-07-15
赵曦, 李娟, 陆克定, 黄晓英. 华南某垃圾焚烧厂排放PCBs和PCNs的固气分布、同系物分布及毒性当量特征[J]. 环境化学, 2015, 34(7): 1268-1274. doi: 10.7524/j.issn.0254-6108.2015.07.2015020401
引用本文: 赵曦, 李娟, 陆克定, 黄晓英. 华南某垃圾焚烧厂排放PCBs和PCNs的固气分布、同系物分布及毒性当量特征[J]. 环境化学, 2015, 34(7): 1268-1274. doi: 10.7524/j.issn.0254-6108.2015.07.2015020401
shu
ZHAO Xi, LI Juan, LU Keding, HUANG Xiaoying. Characterization of particle/gas partition, congener patterns, and TEQ of PCBs and PCNs released from a municipal solid waste incinerator (MSWI) in South China[J]. Environmental Chemistry, 2015, 34(7): 1268-1274. doi: 10.7524/j.issn.0254-6108.2015.07.2015020401
Citation: ZHAO Xi, LI Juan, LU Keding, HUANG Xiaoying. Characterization of particle/gas partition, congener patterns, and TEQ of PCBs and PCNs released from a municipal solid waste incinerator (MSWI) in South China[J]. Environmental Chemistry, 2015, 34(7): 1268-1274. doi: 10.7524/j.issn.0254-6108.2015.07.2015020401
shu

华南某垃圾焚烧厂排放PCBs和PCNs的固气分布、同系物分布及毒性当量特征

  • 1.  深圳市环境科学研究院, 深圳, 518001;
  • 2.  北京大学环境科学与工程学院, 北京, 100871
  • 收稿日期:  2015-02-04
基金项目:

国家自然科学基金项目(41375124)

深圳市人居环境委员会环境科研专项基金项目(SZGX2012118D-SCZJ)资助.

摘要: 以华南某城市生活垃圾焚烧厂一期(WI-A)和二期(WI-B)为研究对象,采集了飞灰和烟气样品,通过GC/MS对其中PCBs和PCNs的全部单体进行了测定,分析了PCBs和PCNs的固气分布(飞灰和烟气中的总量比例)、同系物分布以及毒性当量特征.结果表明,WI-A和WI-B焚烧单位垃圾产生的PCBs和PCNs总量分别为0.397 mg·t-1(湿基)和0.363 mg·t-1(湿基).活性炭喷射量对PCBs的固气分布特征和去除率影响较大,对PCNs则不明显.PCBs同系物在烟气中以低氯取代单体为主,在飞灰中以高氯取代单体为主.PCNs同系物在烟气中以五氯单体为主,在飞灰中以四氯、五氯单体为主.WI-A和WI-B排放的烟气总TEQ分别为0.051 ng TEQ·Nm-3和0.096 ng TEQ·Nm-3,WI-A烟气Co-PCBs和Dl-PCNs对总TEQ的贡献率分别为3.2%和0.13%,WI-B烟气Co-PCBs和Dl-PCNs对总TEQ的贡献率分别为5.3%和0.34%,提示垃圾焚烧排放烟气中的Co-PCBs和Dl-PCNs的毒性同样值得关注.

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