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Patterns and levels of PCDD/F in a Chinese graphite electrode sludge

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Chinese Science Bulletin

Abstract

The graphite electrode sludge was sampled from a huge chloralkali plant in central China. The total level of PCDD/F was found as high as 378.85 μg/kg sludge (dry weight). The patterns of PCDD/F in each homologue indicated the predominance of tetra-to octa-chlorinated PCDFs. Furthermore, the toxic 2,3,7,8-substituted PCDFs constituted over 80% of the total PCDFs in the sludge and the corresponding PCDDs were only at 15 μg/kg level. The calculated value of the international toxic equivalence (I-TEQ) in sludge was 21.65 μg/kg sludge (dry weight). This typical “dioxin chloralkali pattern” was apparently identified in the sediments near the effluent outlet of the chloralkali plant.

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Authors and Affiliations

  1. State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, 430072, Wuhan, China

    Ying Xu, Qinghua Zhang, Wenzhong Wu & Wen Li

Authors
  1. Ying Xu
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  2. Qinghua Zhang
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  3. Wenzhong Wu
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  4. Wen Li
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Correspondence to Ying Xu.

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Xu, Y., Zhang, Q., Wu, W. et al. Patterns and levels of PCDD/F in a Chinese graphite electrode sludge. Chin.Sci.Bull. 45, 1471–1476 (2000). https://doi.org/10.1007/BF02898890

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  • DOI: https://doi.org/10.1007/BF02898890

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