沱江流域沉积物中合成麝香的分布特征及其潜在生态风险评估  

Occurrence and distribution of synthetic musks in sediments from Tuojiang and their potential ecological risk

作　　者：刘艺 徐亮[4] 胡琼璞 曾祥英 冉勇[1,2] 杨余[1,2] 于志强 LIU Yi;XU Liang;HU Qiongpu;ZENG Xiangying;RAN Yong;YANG Yu;YU Zhiqiang(State Key Laboratory of Organic Geochemistry,Guangdong Key Laboratory of Environment and Resources,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou,510640,China;CAS Center for Excellence in Deep Earth Science,Guangzhou,510640,China;University of Chinese Academy of Sciences,Beijing,100049,China;Jiangxi Academy of Eco-environmental Sciences and Planning,Nanchang,330039,China;Hangzhou PuYu Technology Development Co.,Ltd,Hangzhou,311305,China)

机构地区：[1]有机地球化学国家重点实验室,广东省环境资源利用与保护重点实验室,中国科学院广州地球化学研究所,广州510640 [2]中国科学院深地科学卓越创新中心,广州510640 [3]中国科学院大学,北京100049 [4]江西省生态环境科学研究与规划院,南昌330039 [5]杭州谱育科技发展有限公司,杭州311305

出　　处：《环境化学》2022年第6期1967-1975,共9页Environmental Chemistry

基　　金：中国科学院前沿科学重点研究项目(QYZDJ-SSW-DQC018-02);广东省“珠江人才”计划本土创新科研团队(2017BT01Z134);广东省省级科技计划项目(2020B1212060053)资助.

摘　　要：沱江是四川省内重要水系,也是长江上游重要支流.沱江既是流域内纳污河流,也是工农业生产用水和居民饮用水水源.本文在沱江流域采集表层沉积物样品46个,研究了9种合成麝香的污染水平和分布特征.在所有沉积物中均检出佳乐麝香(HHCB)和吐纳麝香(AHTN),浓度范围分别为0.736—25.0 ng·g^(−1)(中值为3.68 ng·g^(−1))和0.320—24.4 ng·g^(−1)(中值为1.55 ng·g^(−1)),研究结果揭示出生活污水排放对沱江沉积物的影响.Pearson相关性分析表明HHCB与AHTN有显著正相关(r=0.894,P<0.01),说明它们具有相似来源和环境地球化学行为.沉积物中AHTN和HHCB实测浓度远低于各化合物对应的预测无效应浓度,风险熵值远小于1,表明其生态风险有限.Tuojiang,one of the important tributaries of Yangtze River,drains across Sichuan Province receiving a large amount of wastewater,and acts as important source water for drinking water as well as industrial and agriculture production.In the present study,46 surface sediment samples were collected,then the concentrations and spatial distributions of 9 synthetic musks were investigated.The results indicated that HHCB and AHTN were found as main components in all samples,with concentrations in the range of 0.736—25.0 ng·g^(−1)(median value of 3.68 ng·g^(−1))and 0.320—24.4 ng·g^(−1)(median value of 1.55 ng·g^(−1)),respectively.The Pearson correlation analysis showed that there was a significant positive correlation between HHCB and AHTN(r=0.894,P<0.01),indicating their similar emission sources and environmental geochemical behavior.The calculated RQs values,based on the measured concentrations of AHTN and HHCB,were far lower than 1,and suggested their limited ecological risk to aquatic organisms in the Tuojiang.

关 键 词：沱江流域 沉积物 合成麝香 生态风险 

分 类 号：X522[环境科学与工程—环境工程]