Jia Yuxi, Cheng Jin, Sun Hongfei, Wang Min, Zhang Ruxue, Xue Yunfeng, He Shuyue, Liu Kezhong, Shi Lei, Lou Yinghua
College of Environmental Science and Engineering, Qingdao University, Qingdao 266071, China.
China National Research Institute of Food & Fermentation Industries Co., Ltd, Beijing 100015, China.
Mar Pollut Bull. 2023 Apr;189:114790. doi: 10.1016/j.marpolbul.2023.114790. Epub 2023 Mar 9.
The fate and transformation of PHCZs in the coastal river environment are not yet comprehensively understood. Paired river water and surface sediment were collected, and 12 PHCZs were analyzed to find out their potential sources and investigate the distribution of PHCZs between river water and sediment. The concentration of ∑PHCZs varied from 8.66 to 42.97 ng/g (mean 22.46 ng/g) in sediment and 17.91 to 81.82 ng/L (mean 39.07 ng/L) in river water. 18-B-36-CCZ was the dominant PHCZ congener in sediment, while 36-CCZ was in water. Meanwhile, the logK values for CZ and PHCZs were among the first calculated in the estuary and the mean logK varied from 4.12 for 1-B-36-CCZ to 5.63 for 3-CCZ. The logK values of CCZs were higher than those of BCZs, this may suggest that sediments have a higher capacity for accumulation and storage of CCZs than highly mobile environmental media.
在沿海河流环境中，多氯代二苯并二噁英/多氯代二苯并呋喃（PHCZs）的归宿和转化尚未得到全面了解。采集了河水和表层沉积物样本，分析了12种PHCZs，以找出它们的潜在来源，并研究PHCZs在河水和沉积物之间的分布情况。沉积物中总PHCZs的浓度在8.66至42.97纳克/克之间（平均22.46纳克/克），河水中的浓度在17.91至81.82纳克/升之间（平均39.07纳克/升）。18 - B - 36 - 氯代二苯并二噁英（18 - B - 36 - CCZ）是沉积物中主要的PHCZs同系物，而36 - CCZ是水中的主要同系物。同时，计算出了河口地区二氯代二苯并二噁英（CZ）和PHCZs的logK值，其平均值从1 - B - 36 - CCZ的4.12到3 - CCZ的5.63不等。氯代二苯并二噁英（CCZs）的logK值高于溴代氯代二苯并二噁英（BCZs），这可能表明沉积物对CCZs的积累和储存能力高于高流动性的环境介质。
