| 岩溶地下河流域水中多环芳烃污染特征及生态风险评价 |
| 摘要点击 2761 全文点击 1240 投稿时间：2014-03-03 修订日期：2014-04-23 |
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| 中文关键词 多环芳烃 岩溶地下河 变化特征 生态风险评价 |
| 英文关键词 polycyclic aromatic hydrocarbons karst underground river characteristics of variation ecological risk assessment |
| 作者 | 单位 | E-mail | | 蓝家程 | 西南大学地理科学学院, 三峡库区生态环境教育部重点实验室, 重庆 400715
国土资源部岩溶生态环境-重庆南川野外基地, 重庆 408435 | lanjc@swu.edu.cn | | 孙玉川 | 西南大学地理科学学院, 三峡库区生态环境教育部重点实验室, 重庆 400715
中国地质科学院岩溶地质研究所/国土资源部、广西岩溶动力学重点实验室, 桂林 541004 | sunyc@swu.edu.cn | | 田萍 | 四川省地质环境监测总站, 成都 610081 | | | 卢丙清 | 重庆市地质勘查开发局南江水文地质工程地质队, 重庆 401121 | | | 师阳 | 西南大学地理科学学院, 三峡库区生态环境教育部重点实验室, 重庆 400715 | | | 徐昕 | 西南大学地理科学学院, 三峡库区生态环境教育部重点实验室, 重庆 400715 | | | 梁作兵 | 西南大学地理科学学院, 三峡库区生态环境教育部重点实验室, 重庆 400715 | | | 杨平恒 | 西南大学地理科学学院, 三峡库区生态环境教育部重点实验室, 重庆 400715
国土资源部岩溶生态环境-重庆南川野外基地, 重庆 408435 | |
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| 中文摘要 |
| 利用气相色谱-质谱联用仪（GC/MS）测定了老龙洞地下河流域水中16种优控多环芳烃（polycyclic aromatic hydrocarbons，PAHs）含量，研究了流域内PAHs组成、污染水平，并对其进行了生态风险评价. 结果表明，老龙洞地下河水中ΣPAHs含量变化范围为81.5~8019 ng ·L-1，表层岩溶泉ΣPAHs含量为288.7~15200 ng ·L-1，地表水ΣPAHs含量为128.4~2442 ng ·L-1；受黄桷垭镇污水的影响，地下河水相对于地下水补给来源的落水洞和地表水含量较高. 流域内水中PAHs均以低环为主，尤其是3环占主导. 受污水、季节的影响及PAHs物理化学性质的差异，水中PAHs月变化呈现不同的变化特征. 地表水、落水洞污水排放对地下河PAHs来源起重要作用. 流域内水中PAHs以低环污染为特征，所有检测到的PAH化合物处于中等污染和重污染风险. |
| 英文摘要 |
| Water samples in Laolongdong underground river catchment were collected to determine the concentration, compositional profiles, and evaluate ecological risk of 16 priority polycyclic aromatic hydrocarbons (PAHs). PAHs were measured by GC/MS. The total concentrations of 16 PAH ranged from 81.5-8019 ng ·L-1 in underground river, 288.7-15200 ng ·L-1 in karst springs, and 128.4-2442 ng ·L-1 in surface water. Affected by waste water from Huangjueya town, concentrations of PAHs in underground river were higher than those in surface water and waste water from sinkhole. The PAHs profiles were dominated by 3 ring PAHs. There were differences of monthly variations of PAHs contents in the water,due to waste water,season and different characteristics of PAH. Surface water and waste water from sinkhole played an important role on contamination in the river. The levels of ecological risk were generally moderately polluted and heavily polluted according to all detected PAH compounds in the water. |
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