Ecotoxicological risk of antibiotics and their mixtures to aquatic biota with the DGT technique in sediments
文献类型： 外文期刊
作者： Gu, Yang-Guang 1 ; Gao, Yan-Peng 6 ; Jiang, Shi-Jun 5 ; Jordan, Richard W. 8 ; Yang, Yu-Feng 9 ;
作者机构： 1.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou 510300, Peoples R China
2.Guangdong Prov Key Lab Fishery Ecol & Environm, Guangzhou 510300, Peoples R China
3.Minist Agr & Rural Affairs, Key Lab Open Sea Fishery Dev, Guangzhou 510300, Peoples R China
4.Chinese Acad Fishery Sci, Key Lab Big Data South China Sea Fishery Resources, Beijing, Peoples R China
5.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519000, Peoples R China
6.Guangdong Univ Technol, Inst Environm Hlth & Pollut Control, Guangzhou 510006, Peoples R China
7.Hohai Univ, Coll Oceanog, Nanjing 245700, Peoples R China
8.Yamagata Univ, Fac Sci, Yamagata 9908560, Japan
9.Jinan Univ, Coll Life Sci & Technol, Key Lab Philosophy & Social Sci Guangdong Prov, Southern Marine Sci & Engn Guangdong Lab Zhuhai, Guangzhou 510632, Peoples R China
关键词： Antibiotics; Ecotoxicological risk; Combined toxicity; Sediments; Bioavailability; Zhelin Bay
期刊名称：ECOTOXICOLOGY （ 影响因子：2.7； 五年影响因子：2.9 ）
ISSN： 0963-9292
年卷期： 2023 年 32 卷 4 期
页码：
收录情况： SCI
摘要： Antibiotics are emerging contaminants and widely used in human healthcare, livestock, and aquaculture. The toxicity posed by antibiotics and their mixtures in sediments depends on their bioavailability. Now, the bioavailability of organic materials can be determined accurately by the diffusive gradients in thin films (DGT) technique. This technique was used for the first time ever in this study to evaluate in detail the integral toxicity of antibiotics in sediments to aquatic biota. Zhelin Bay was selected as a case study, because it is the largest mariculture area in eastern Guangdong, South China. Two antibiotics, chlortetracycline (CTC) (A) and sulfachlorpyridazine (SCP), were detected at average concentrations of 2.83 and 1.14 ng/ml, respectively. The other fifteen antibiotics were undetectable. The single risk assessment based on the risk quotient (RQ) of CTC and SCP shows that a relatively low risk has occurred. After this careful assessment of probabilistic ecotoxicological risks, the combined toxicity of antibiotic mixtures (CTC and SCP) clearly indicates that the toxicity probability of surface sediments to aquatic organisms was relatively low (0.23%).
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