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The authors would like to thank the Institute for Ecopreneurship and the Institute of Chemistry and Bioanalytics, University of Applied Sciences Northwestern Switzerland for their support.
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Toan, V.D., Thao, V.D., Walder, J. et al. Level and Distribution of Polychlorinated Biphenyls (PCBs) in Surface Soils from Hanoi, Vietnam. Bull Environ Contam Toxicol 78, 211–216 (2007). https://doi.org/10.1007/s00128-007-9120-z
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DOI: https://doi.org/10.1007/s00128-007-9120-z