泰国废水处理厂和水生环境中杀生剂的出现、命运和风险评估。
Occurrence, fate and risk assessment of biocides in wastewater treatment plants and aquatic environments in Thailand.
机构信息
State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Environmental Theoretical Chemistry, South China Normal University, Guangzhou 510006, China; University of Chinese Academy of Sciences, Beijing 100049, China.
SCNU Environmental Research Institute, Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Environmental Theoretical Chemistry, South China Normal University, Guangzhou 510006, China.
出版信息
Sci Total Environ. 2019 Nov 10;690:1110-1119. doi: 10.1016/j.scitotenv.2019.07.097. Epub 2019 Jul 8.
This study investigated the occurrence and fate of 19 biocides in 8 wastewater treatment plants and receiving aquatic environments (both freshwater and estuarine systems) in Thailand. The predominant compound in wastewater and surface water was methylparaben with the maximum concentration of 15.2 μg/L detected in the receiving river, while in sludge and sediment was triclocarban with the maximum concentration of 8.47 μg/g in sludge. Triclosan was the main contaminants in the fish samples with the maximum concentration of 1.20 μg/g. Similar results of biocides were found in the estuarine system in Pattaya city, with the maximum concentration of 185 ng/L in sea water for methylparaben, and 242 ng/g in estuarine sediment for triclocarban. The aqueous removal rates for the biocides ranged from 15% to 95% in average. The back estimated-usage and total estimated emission of Ʃ19 biocides in Thailand was 279 and 202 tons/year, respectively. Preliminary ecological risk assessment showed that clotrimazole and triclosan could pose high risks to aquatic organisms in the receiving aquatic environments.
本研究调查了泰国 8 家污水处理厂和受纳水生环境（包括淡水和河口系统）中 19 种杀生物剂的发生和归宿。废水中和地表水中含量最高的化合物是对羟基苯甲酸甲酯，在受纳河中的最大浓度为 15.2μg/L，而在污泥和沉积物中含量最高的化合物是三氯生，最大浓度为 8.47μg/g。鱼样中的主要污染物是三氯生，最大浓度为 1.20μg/g。在芭堤雅市的河口系统中也发现了类似的杀生物剂结果，对羟基苯甲酸甲酯在海水中的最大浓度为 185ng/L，三氯卡班在河口沉积物中的最大浓度为 242ng/g。杀生物剂在水中的去除率平均为 15%至 95%。泰国初步估算的 19 种杀生物剂总用量和总排放量分别为 279 吨/年和 202 吨/年。初步生态风险评估表明，克霉唑和三氯生可能对受纳水生环境中的水生生物构成高风险。
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