摘要
为深入了解江苏小洋口地区近岸海域表层沉积物中石油烃污染状况,分析近岸生产活动对海洋环境的影响,于2020年在小洋口近岸海域采集了10个点位的沉积物样品,采用气相色谱法和气相色谱质谱法分析测定其中的石油烃及多环芳烃总量,揭示了正构烷烃(n-Alkane)分布特征并探讨了石油烃来源.结果表明,小洋口近岸海域表层沉积物中石油烃总量介于3.95—13.28μg·g−1之间,碳数分布为C11—C36;洋口港、洋口化学工业园附近海域沉积物中石油烃含量相对较低,港口和化工生产项目未对邻近海域中石油烃浓度产生明显影响.河口附近石油烃含量相对较高,可能受陆源输入影响较大.大部分点位沉积物中石油烃为陆海混合来源,个别点位沉积物中石油烃以陆源输入为主;数据显示该海域可能受到轻度石油污染.此外,小洋口近岸海域表层沉积物中多环芳烃总量介于53.1—117.0 ng·g^(−1)之间,与该海域其它研究浓度相当,在国内处于相对较低水平;以三环和四环芳烃为主,可能是燃烧与石油混合来源的结果.
In order to understand the pollution status of petroleum hydrocarbons in surface sediments of Xiaoyangkou coastal area and analyze the impact of nearshore production activities on the marine environment,10 sediment samples were collected in 2020 and analyzed for the content of petroleum hydrocarbons by gas chromatography and polycyclic aromatic hydrocarbons(PAH)by gas chromatography-mass spectrometry.The distribution characteristics of n-alkane and the source of petroleum hydrocarbons were studied.The results showed that the content of total petroleum hydrocarbons(TPH)varied from 3.95μg·g−1 to 13.28μg·g−1,and the carbon number distribution was from 11 to 36.The content of TPH in the sediments near Yangkou Port and Yangkou Chemical Industrial Park were relatively low,which indicated that the port and chemical production projects had no obvious influence on the concentration of petroleum hydrocarbon in the adjacent sea areas.The TPH content near the river mouth was at a relatively high level,which may be greatly affected by terrigenous input.Petroleum hydrocarbons in most of the samples were from terrigenous and marine mixed sources,while terrigenous input was dominant in a small part of samples.It was possible that this area was slightly contaminated by petroleum.The total amount of PAHs ranged from 53.1—117.0 ng·g^(−1),which was consistent with other studies in this sea area and at a relatively low level compared with other sea areas in China.Tricyclic and tetracyclic aromatic hydrocarbons were predominant,which was probably as a result of combustion mixed with petroleum sources.
作者
陈星羽
赵亚娴
刘海萍
李娟
苗纪琰
赵彦辉
黄林艳
付丹
CHEN Xingyu;ZHAO Yaxian;LIU Haiping;LI Juan;MIAO Jiyan;ZHAO Yanhui;Huang Linyan;FU Dan(Institute of Environmental Reference Materials,Environmental Development Center of the Ministry of Ecology and Environment,Beijing,100029,China;State Environmental Protection Key Laboratory of Environmental Pollutant Metrology and Reference Materials,Beijing,100029,China;Jiangsu Provincial Environmental Monitoring Center,Nanjing,210041,China)
出处
《环境化学》
CAS
CSCD
北大核心
2023年第3期884-892,共9页
Environmental Chemistry
基金
中日友好环境保护中心科技发展基金项目资助.
关键词
小洋口
海洋沉积物
石油烃
分布特征
Xiaoyangkou
marine sediment
petroleum hydrocarbons
distribution characteristics
