湖光岩玛珥湖沉积物雨水芳烃化合物组成研究  

A Study on the Composition of Polycyclic Aromatic Hydrocarbons,Sediments and Wet Precipitation in Huguangyan Maar Lake

作　　者：马雪梅 周迅 高苑 罗涛 王遥平 宋之光 MA Xuemei;ZHOU Xun;GAO Yuan;LUO Tao;WANG Yaoping;SONG Zhiguang(College of Chemistry and Environmental Science,Guangdong Ocean University,Zhanjiang 524000,China)

机构地区：[1]广东海洋大学化学与环境学院,广东湛江524000

出　　处：《环境科学与技术》2024年第S01期21-27,共7页Environmental Science & Technology

基　　金：广东海洋大学博士科研启动项目(R17001)。

摘　　要：该文利用气相色谱-质谱联用仪,对大气降水、湖光岩玛珥湖表层湖水和沉积物中16种优控多环芳烃(PAHs)化合物进行研究。结果表明:(1)大气降水和表层湖水中检出15种优控PAHs,总浓度分别为244.78 ng/L和117.31 ng/L;沉积物中检出16种优控PAHs,总浓度为304.42 ng/g。大气降水、表层湖水、沉积物中2~3环PAHs占比呈顺序降低,4~6环PAHs占比呈顺序递增。(2)大气降水中Chr、BbF、BkF、BaP、IcdP致癌单体多环芳烃含量超过标准规定限值,BaA略低于标准规定限值;湖光岩玛珥湖表层湖水中的BaA、BbF、BkF、BaP等致癌性多环芳烃化合物含量低于标准规定的限值,Chr和IcdP含量略高于标准规定的限值。(3)湖光岩玛珥湖沉积物中Nap、Acy、Ace、Flu、Phe、Ant、Fla、Pyr、BaA、Chr、BaP、DahA化合物含量均远低于沉积物质量基准值ERL,无生态风险。而尚无规定安全值的BbF、BkF、InP和BghiP的生态风险需要进一步关注。总体上湖光岩玛珥湖表层湖水和沉积物PAHs生态风险低。This study has analyzed the abundance distribution of 16 priority controlled polycyclic aromatic hydrocarbons(PAHs)compounds in lake surface water,sediments and wet precipitation of Huguangyan Maar Lake by using gas chromatography-mass spectrometry(GC-MS).The results show that:(1)The total concentrations(ΣPAHs)of the 15 preferred control PAHs detected in wet precipitation and surface lake water were 244.78 ng/L and 117.31 ng/L,respectively;The total concentration(ΣPAHs)of 16 preferred PAHs detected in the sediment was 304.42 ng/g.The proportion of 2-3 ring PAHs decreased sequentially from wet precipitation to surface lake water to sediment,and the proportion of 4-6 ring PAHs increased sequentially.(2)The content of Chr,BbF,BkF,BaP and IcdP carcinogenic monomeric PAHs in wet precipitation exceeds the standard threshold values,and BaA is slightly below the standard threshold value;The content of BaA,BbF,BkF and BaP etc.specified carcinogenic PAHs in the surface lake water of Huguangyan is lower than the standard threshold value,and the content of Chr and IcdP is slightly higher than the threshold value specified in the standard.(3)The content of Nap,Acy,Ace,Flu,Phe,Ant,Fla,Pyr,BaA,Chr,BaP,and DahA compounds in the sediments is well below the sediment quality reference value of ERL,and there is no ecological risk.The ecological risks of BbF,BkF,InP and BghiP,for which safety threshold have not been specified,need further attention.Overall,the ecological risk of 16 PAHs in the lake surface water and sediments of the Huguangyan Maaar Lake were low.

关 键 词：表层湖水 沉积物 大气降水 多环芳烃化合物 湖光岩玛珥湖 

分 类 号：X524[环境科学与工程—环境工程]