| 胶州湾表层水体中邻苯二甲酸酯的污染特征和生态风险 |
| 摘要点击 2232 全文点击 647 投稿时间：2018-08-27 修订日期：2018-11-13 |
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| 中文关键词 胶州湾 邻苯二甲酸酯(PAEs) 空间分布 季节变化 生态风险评价 |
| 英文关键词 Jiaozhou Bay phthalate esters (PAEs) spatial distribution seasonal variation ecological risk assessment |
| 作者 | 单位 | E-mail | | 刘成 | 中国海洋大学环境科学与工程学院, 近海环境污染控制研究所, 海洋环境与生态教育部重点实验室, 青岛 266100 | 1327091051@qq.com | | 孙翠竹 | 中国海洋大学环境科学与工程学院, 近海环境污染控制研究所, 海洋环境与生态教育部重点实验室, 青岛 266100 | | | 张哿 | 中国海洋大学环境科学与工程学院, 近海环境污染控制研究所, 海洋环境与生态教育部重点实验室, 青岛 266100 | | | 唐燎 | 中国海洋大学环境科学与工程学院, 近海环境污染控制研究所, 海洋环境与生态教育部重点实验室, 青岛 266100 | | | 邹亚丹 | 中国海洋大学环境科学与工程学院, 近海环境污染控制研究所, 海洋环境与生态教育部重点实验室, 青岛 266100 | | | 徐擎擎 | 中国海洋大学环境科学与工程学院, 近海环境污染控制研究所, 海洋环境与生态教育部重点实验室, 青岛 266100 | | | 李锋民 | 中国海洋大学环境科学与工程学院, 近海环境污染控制研究所, 海洋环境与生态教育部重点实验室, 青岛 266100 | lifengmin@ouc.edu.cn |
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| 中文摘要 |
| 以胶州湾为研究区域，选取15种常用邻苯二甲酸酯（phthalate esters，PAEs）作为检测目标，采用搅拌棒吸附萃取-气相色谱质谱联用的方法，于2015年8月和11月以及2016年1月对胶州湾开展3次大面积调查，检测分析了胶州湾表层水体中PAEs的含量、组成、空间分布和季节变化，同时对胶州湾水体中PAEs进行了风险评价.结果表明：①2015年8月和11月、2016年1月胶州湾表层海水中PAEs的总浓度范围分别为3.63~21.20、2.24~12.60和0.01~4.15μg·L-1，平均浓度分别为11.10、5.26和0.80 μg·L-1.②受入海径流和洋流影响，胶州湾表层水体中PAEs浓度表现出近岸高，远岸低，且总体东岸浓度高于西岸.与国内外其他研究相比，胶州湾表层水体中PAEs含量处于中等水平，但在海洋中属于污染较严重的海域.33个季节PAEs浓度分布差异较大，受降雨量等因素影响整体呈现夏季 > 秋季 > 冬季的趋势，③个季节主要检出种类均为DBP、BBP和DEHP.④生态风险评估结果表明，胶州湾各站位DBP的风险商值（RQ）均大于1，即生态风险较大，其他PAEs（RQ<1）风险较小.PAEs已成为胶州湾中一类具有潜在威胁的有机污染物，其在环境中的行为和生态危害仍需进一步研究. |
| 英文摘要 |
| In order to better understand phthalate esters (PAEs) pollution in Jiaozhou Bay, surface water samples were collected for content analysis in August and November 2015 and January 2016. Fifteen kinds of PAEs were detected by stir bar sorptive extraction and gas chromatography-mass spectrometry. The content, composition, spatial distribution, seasonal variation, and ecological risk assessment of the PAEs in the surface waters were examined and analyzed. The results showed that:① The total concentrations of PAEs in the surface seawater in August and November 2015 and January 2016 were 3.63-21.20 μg·L-1, 2.24-12.60 μg·L-1, and 0.01-4.15 μg·L-1, respectively, and the average concentrations were 11.10 μg·L-1, 5.26 μg·L-1, and 0.80 μg·L-1, respectively. ② Influenced by runoff and ocean currents, the concentration of PAEs in the surface water of Jiaozhou Bay is higher near the shore and lower in the middle, and the total concentration of the east coast is higher than that of the west coast. Compared with surveys of other rivers and oceans, the PAEs content in the surface water of Jiaozhou Bay is moderate, but it is heavily polluted compared with other oceans. ③ Considering the rainfall and other factors, the distribution of PAEs in the three seasons followed the order summer > autumn > winter. The main PAEs detected were DBP, BBP, and DEHP. ④ The results of the ecological risk assessment showed that the risk quotient (RQ) of DBP at each station in Jiaozhou Bay was greater than 1; that is, the ecological risk was relatively large, while the risk of the other PAEs (RQ<1) was small. PAEs have become a potentially threatening organic pollutant in Jiaozhou Bay. Their behavior and the ecological hazards that they present to the environment still require further study. |
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