辽河流域地表水中典型抗生素污染特征及生态风险评估

发布时间：2018-01-02 23:35

本文关键词：辽河流域地表水中典型抗生素污染特征及生态风险评估　出处：《环境科学》2017年11期 　论文类型：期刊论文

【摘要】：利用固相萃取和高效液相色谱-质谱相串联法检测分析辽河流域地表水中5类典型抗生素的污染特征并评估其生态风险.结果表明,辽河流域地表水中抗生素平均浓度大环内酯类最高201.88 ng·L~(-1);其次是喹诺酮类124.27 ng·L~(-1),甲氧苄氨嘧啶113.40 ng·L~(-1),磺胺类93.93 ng·L~(-1),四环素类最低仅为24.37 ng·L~(-1);大辽河水系抗生素污染水平要高于辽河水系;来源解析结果显示人用抗生素所占比例最高为49.1%.抗生素甲氧苄胺嘧啶和脱水红霉素生态风险较高,新民市、沈阳市和鞍山市为流域内抗生素的高风险区域,风险评估结果表明辽河流域地表水已存在一定的生态风险,应引起足够的重视并控制其危害.
[Abstract]:Solid phase extraction (SPE) and high performance liquid chromatography-mass spectrometry (HPLC-MS) were used to detect and analyze the pollution characteristics of five typical antibiotics in surface water of Liaohe River Basin and to evaluate their ecological risk. The mean concentration of macrolides in surface water of Liaohe River Basin was the highest (201.88 ng 路L ~ (-1)). Quinolones (124.27 ng 路L ~ (-1)), trimethoprim (113.40 ng 路L ~ (-1)), sulfonamides (93.93 ng 路L ~ (-1)). The lowest level of tetracycline was 24.37 ng 路L ~ (-1) ~ (-1). The level of antibiotic pollution in the Daliaohe River system was higher than that in the Liaohe River system. The results of source analysis showed that the highest proportion of human antibiotics was 49.1. The ecological risk of antibiotics methoxybenzylamine and dehydrating erythromycin was high, Xinmin city. Shenyang and Anshan are high risk areas for antibiotics. The risk assessment results show that there are some ecological risks in surface water of Liaohe river basin, which should be paid enough attention to and controlled.
【作者单位】：大连海洋大学水产与生命学院;中国环境科学研究院流域水生态保护技术研究室;辽宁大学环境学院;
【基金】：国家自然科学基金项目(51208483,51178438) 国家水体污染控制与治理科技重大专项(2012ZX07501-001-04)
【分类号】：X522;X826
【正文快照】： 大学环境学院,沈阳110036)抗生素是药物和个人护理品中的一类,具有抗菌活性,是生物在生命活动过程中所产生或者半人工合成、全人工合成,能在低微浓度下有选择地抑制或影响生物机能的化合物[1],其最初用于人类和牲畜疾病防治,后又作为促增长剂广泛应用于畜牧业.我国作为抗生素

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