| 引用本文: | 仝浩玉,朱恺彧,兰宇宇,盛璨璨,张大海,袁红明,赵广明,李先国.黄河三角洲湿地表层沉积物中典型抗生素的分布特征和生态风险评估.海洋与湖沼,2023,54(4):1028-1038. |
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| 黄河三角洲湿地表层沉积物中典型抗生素的分布特征和生态风险评估 |
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仝浩玉1,2, 朱恺彧1,2, 兰宇宇1,2, 盛璨璨1,2, 张大海1,2, 袁红明3, 赵广明3, 李先国1,2
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1.中国海洋大学化学化工学院 山东青岛 266100;2.中国海洋大学海洋化学理论与工程技术教育部重点实验室 山东青岛 266100;3.中国地质调查局青岛海洋地质研究所 山东青岛 266071
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| 摘要: |
| 作为一类新污染物, 沉积物中的抗生素对生态系统构成了潜在的威胁。探究常见抗生素在黄河三角洲[Huanghe (Yellow) River Delta, HRD]表层沉积物中的赋存状况及其生态风险具有现实意义。利用高效液相色谱-串联质谱法测定了2021年6月采自HRD南北两个区域表层沉积物中的磺胺类(SAs)、喹诺酮类(QNs)、大环内酯类(MLs)和四环素类(TCs)共14种抗生素的含量。结果表明, 抗生素的总检出率为52.8%, 浓度范围为nd (未检出)~22.6 ng/g, QNs和MLs检出率较高; QNs和TCs的浓度水平较高。HRD表层沉积物抗生素浓度分布特征的主要影响因素是人口密度以及农业和畜牧业发展, 次要因素是沉积物的理化性质。南部区域抗生素浓度水平显著高于北部区域, 沉积物中有机质和黏土含量与QNs和TCs显著正相关。生态风险评价结果表明, 南部区域的生态风险水平明显高于北部区域, 其中QNs和TCs为主要贡献者, 但抗生素生态风险水平并不只由浓度决定, 还取决于其对水生生物的毒性大小和沉积物的理化性质。 |
| 关键词: 黄河三角洲 沉积物 抗生素 分布特征 生态风险 |
| DOI：10.11693/hyhz20221200333 |
| 分类号:X52; X826 |
| 基金项目:国家自然科学基金, 42076070号, 41276067号; 山东省自然科学基金, ZR2020MD079号; 地质调查项目, DD20221775号。 |
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| DISTRIBUTION CHARACTERISTICS AND ECOLOGICAL RISK ASSESSMENT OF TYPICAL ANTIBIOTICS IN SURFACE SEDIMENTS OF HUANGHE RIVER DELTA WETLAND |
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TONG Hao-Yu1,2, ZHU Kai-Yu1,2, LAN Yu-Yu1,2, SHENG Can-Can1,2, ZHANG Da-Hai1,2, YUAN Hong-Ming3, ZHAO Guang-Ming3, LI Xian-Guo1,2
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1.College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China;2.Key Laboratory of Marine Chemistry Theory and Technology(Ocean University of China), Ministry of Education, Qingdao 266100, China;3.Qingdao Institute of Marine Geology, China Geological Survey, Qingdao 266071, China
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| Abstract: |
| Antibiotics in sediments are regarded as emerging pollutants that have posed great threat to the ecosystem. It is imperative to explore the occurrence and ecological risks of antibiotics in the surface sediments of the Huanghe (Yellow) River Delta (HRD). In this study, we analyzed the concentration and distribution characteristics of 14 commonly used antibiotics, including 5 sulfonamides (SAs), 3 quinolones (QNs), 3 macrolides (MLs), and 3 tetracyclines (TCs) in surface sediments collected in June 2021 from the HRD wetland by using high-performance liquid chromatography-tandem triple quadrupole mass spectrometry combined with solid-phase extraction. Results show that there was obvious antibiotic pollution in the study area, and the total detection rate was 52.8% and the concentration ranged nd~22.6 ng/g. Overall, the detection rates of QNs and MLs were higher, and the concentration levels of QNs and TCs were higher. The main factors affecting the distribution of antibiotics in the HRD were population density and the development of agricultural and animal husbandry, in which the southern zone was more severely affected than the northern zone. The secondary factor was the physico-chemical properties of the sediment samples. The concentration level of antibiotics in the southern zone was obviously higher than that in the northern zone. The Spearman correlation analysis showed that the contents of organic matter and clay in sediment were significantly and positively correlated with QNs and TCs. The risk quotient was used to assess the ecological risk and the result show that the ecological risk in the southern zone was pronouncedly higher than that in the northern zone, in which QNs and TCs contributed the most. However, the ecological risk of antibiotics was not only determined by the concentration but also depended on the toxicity of antibiotics to aquatic organisms and the physico-chemical properties of sediments. |
| Key words: Huanghe (Yellow) River Delta (HRD) sediment antibiotics distribution characteristics ecological risk |
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