其他题名Distribution,Source and Risk Assessment of Hydrocarbons in Sediments of Longkou Bay,Bohai Sea
邹艳梅1,2; 李沅蔚1,2; 纪灵3; 杨国华4; 赵世钦5; 王传远1
发表期刊环境科学研究
ISSN1001-6929
2020
卷号33期号:9页码:2138-2147
关键词沉积物正构烷烃多环芳烃(PAHs)风险评价
研究领域Environmental Sciences & Ecology
英文摘要With the implementation of the Development Plan of Shandong Peninsula Blue Economic Zone,human activities in Longkou Bay have developed at an unprecedented rate. Economic development not only affected its tidal and sedimentary environment,but also made petroleum one of the major pollutants in the bay. The surface sediments (0-5 cm) were collected in Longkou Bay. All samples were analyzed for hydrocarbons using GC-MS. The distribution and characteristic parameters of n-alkanes and polycyclic aromatic hydrocarbons (PAHs) were investigated to determine the origins of organic matter and pollutant emission in sediments. Then an environmental risk assessment of sediments were carried out. The results showed that the maximum value of CPI_(25-35) was 1.5 (<4). The TAR ranged from 0.15 to 1.08,while the Pmar-aq ranged from 0.28 to 0.74. These indicated that biogenic origin n-alkanes were more input of marine plankton. The maximum value of the nC16 index was 20.76 (<30),and 71% of the stations' NAR value was less than 0. These showed that marine development activities caused a certain degree of oil pollution. The proportion of 2-and 3-ring PAHs reached up to 50%. The total concentration of 16 PAHs ranged from 460.03 to 2448.29 ng/g,with a mean value of 1328.60 ng/g,and 86% of the stations reached the moderate and severe pollution. The indices of PAHs indicated that PAHs were derived primarily from petroleum and combustion. PAHs toxicity level was evaluated using the Canada Soil Quality Guidelines (SQGs). Some low molecular weight PAHs (Acy,Ace,Flu,Phe, and Ant) occasionally had adverse ecological risk. The Carcinogenic PAHs (SigmaCar-PAHs) and BaP toxicity equivalent (TEQ_(BaP)) were used to estimate the potential health risk of PAHs. They indicated that Longkou Bay sediments had certain toxicity risk,but they were within safe levels. This study shows that n-alkanes in Longkou Bay sediments come from terrestrial,marine organic matter and hydrocarbons origin. And PAHs belong to a mixed source of petroleum and combustion,and their environmental risks are at safe levels.
中文摘要随着《山东半岛蓝色经济区发展规划》(国函[2011])的实施,龙口湾的海洋开发活动得到空前发展,人类活动不仅影响了其潮汐和沉积环境,也使石油类成为该海域主要污染物之一.采用网格布点法采集了龙口湾表层(0~5 cm)沉积物样品,使用GC-MS对烃类物质(正构烷烃和多环芳烃)进行研究,通过其特征参数和比值丰度识别沉积物中有机物来源及污染排放源,并对沉积物进行生态风险评价.结果表明:正构烷烃参数碳优势指数(CPI_(25-35))最大值为1.5(<4),陆海比(TAR)和海洋与水生输入比(Pmar-aq)的范围分别为0.15~1.08和0.28~0.74,指示沉积物中有机物的海源性浮游动植物贡献较大; nC16指数〔w(SigmaC11-36)/w(nC16)〕最大值为20.76(<30),且71%站位的天然正构烷烃比率(NAR)值小于0,说明海洋开发活动造成了石油类污染物注入.沉积物中2环、 3环PAHs(多环芳烃)的占比均超过50%, 16种PAHs的总浓度范围为460.03~ 2 448.29 ng/g,平均值为1 328.60 ng/g,且86%的站位达到PAHs的中度、重度污染; PAHs的特征比值分析指示,龙口湾沉积物中PAHs属于石油和燃烧源的混合来源.以沉积物中PAHs含量为基础,与加拿大土壤质量指南比较,结果显示低分子量PAHs(Acy、Ace、Flu、Phe和Ant)偶尔会产生生态危害;致癌性PAHs比重(SigmaCar-PAHs)和BaP毒性当量(TEQ_(BaP))综合评价表明,在当前的经济开发活动下龙口湾沉积物中PAHs具有一定的潜在毒性,但处于安全水平内.研究显示,龙口湾沉积物中正构烷烃属于陆源、海源和石油烃混合来源; PAHs主要属于石油和燃烧源的混合来源,其生态风险处于安全水平.
文章类型Article
资助机构山东省重点研发计划项目; 烟台市科技发展计划项目; 中国科学院科技服务网络计划(STS计划)
收录类别CSCD
语种中文
CSCD记录号CSCD:6811396
引用统计
文献类型期刊论文
条目标识符http://ir.yic.ac.cnhttp://ir.yic.ac.cn/handle/133337/30335
专题中科院海岸带环境过程与生态修复重点实验室
作者单位1.中国科学院烟台海岸带研究所,山东烟台264003;
2.中国科学院大学,北京100049;
3.国家海洋局烟台海洋环境监测中心站,山东烟台264006;
4.烟台高新技术产业开发区农业农村发展局,山东烟台264114;
5.烟台大学土木工程学院,山东烟台264005
推荐引用方式
GB/T 7714邹艳梅,李沅蔚,纪灵,等. 渤海龙口湾沉积物中烃类物质的分布特征、来源解析及风险评价[J]. 环境科学研究,2020,33(9):2138-2147.
APA邹艳梅,李沅蔚,纪灵,杨国华,赵世钦,&王传远.(2020).渤海龙口湾沉积物中烃类物质的分布特征、来源解析及风险评价.环境科学研究,33(9),2138-2147.
MLA邹艳梅,et al."渤海龙口湾沉积物中烃类物质的分布特征、来源解析及风险评价".环境科学研究 33.9(2020):2138-2147.
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