摘要
近年来,类固醇激素在淡水水体中不断被检出,但是其在海水中的污染特征研究相对较少.本文对中国南海流沙湾进行样品采集,通过高效液相色谱与质谱联用技术(UPLC-MS/MS),研究了33种类固醇激素的污染特征及空间分布.结果表明,在海水和沉积物中均检出7种类固醇激素,含量范围为0.003(甲羟孕酮,MP)~9.023(去氢孕酮,DGT)ng·L^-1和0.017(1,4-雄烯二酮,ADD)~9.281(雄烯二酮,AED)ng·g^-1.在海水中,类固醇激素浓度高低顺序为合成类高于天然类,丰水期高于枯水期,养殖区高于非养殖区.在沉积物中,类固醇激素在时空分布上无明显差异.海洋环境中类固醇激素的主要来源为水产养殖人为饲料添加和废水排放.生态风险评价结果表明,AED处于低风险,其他类固醇激素处于无风险.相关性分析表明,海洋环境中类固醇激素的含量分布规律与盐度、水温、颗粒物(SS)和化学需氧量(COD)有关.本研究有助于认识流沙湾地区类固醇激素的污染特征,并为其生态风险评价和管控提供科学依据.
Steroid hormones have been continuously detected and well studied in freshwater bodies in recent years,although information regarding their contamination characteristics in seawater is rare.In this paper,samples were collected in Liusha Bay,South China Sea,and the contamination characteristics,as well as the spatial distribution of 33 steroid hormones,were studied by ultra performance liquid chromatography-tandem mass spectrometry(UPLC-MS/MS).The results showed that 7 steroid hormones occurred with concentrations ranging from 0.003(medroxyprogesterone,MP)to 9.023 ng·L^-1(dehydroprogesterone,DGT),and from 0.017(androsta-1,4-diene-3,17-dione,ADD)to 9.281 ng·g^-1(4-androstene-3,17-dione,AED)in seawater and sediment samples,respectively.The concentrations of detected steroid hormones were higher during wet weather than during the dry weather,and higher in the aquaculture area compared to that in the non-aquaculture area.There were no significant differences in the spatial and temporal distribution of steroid hormones in sediment.Wastewater discharge and additives in aquaculture feeds were the main routes of steroid hormones entering the marine environment.The results of the ecological risk assessment indicated that the AED posed low risk to the marine environment,whereas other steroid hormones posed no risk.Correlation analysis indicated that the concentration distribution of steroid hormones was related to salinity,water temperature,particulate matter(SS),and chemical oxygen demand(COD)in the marine environment.The results of this study contribute to the understanding of the contamination characteristics of steroid hormones in the Liusha Bay area and provide a scientific basis for ecological risk assessment and control.
作者
杨雷
张晋娜
徐敏
彭涛
史文俊
石义静
应光国
YANG Lei;ZHANG Jin-na;XU Min;PENG Tao;SHI Wen-jun;SHI Yi-jing;YING Guang-guo(State Key Laboratory of Organic Geochemistry,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China;Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety,Environmental Research Institute,South China Normal University,Guangzhou 510006,China;University of Chinese Academy of Sciences,Beijing 100049,China;South China Institute of Environmental Sciences,Ministry of Ecology and Environment,Guangzhou 510535,China)
出处
《环境科学》
EI
CAS
CSCD
北大核心
2019年第11期4879-4888,共10页
Environmental Science
基金
国家自然科学基金项目(41807480)
中央级公益性科研院所基本科研业务专项(PM-zx703-201701-032)
关键词
类固醇激素
雄激素
糖皮质激素
孕激素
流沙湾
污染特征
生态风险评价
steroid hormones
androgen
glucocorticoid
progestogen
Liusha Bay
contamination characteristics
ecological risk assessment
