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内蒙古东北部地区地下-地表饮用水源多环芳烃污染特征与风险
摘要点击 534  全文点击 133  投稿时间:2021-10-23  修订日期:2021-11-03
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中文关键词  多环芳烃(PAHs)  饮用水源地  污染特征  源解析  风险评估
英文关键词  polycyclic aromatic hydrocarbons (PAHs)  drinking water sources  pollution characteristics  source analysis  risk assessment
作者单位E-mail
张坤锋 中国环境科学研究院国家环境保护饮用水水源地保护重点实验室, 北京 100012
中国环境科学研究院湖泊水污染治理与生态修复技术国家工程实验室, 北京 100012
东北林业大学林学院, 哈尔滨 150040 
Zhangkf1995@163.com 
昌盛 中国环境科学研究院国家环境保护饮用水水源地保护重点实验室, 北京 100012
中国环境科学研究院湖泊水污染治理与生态修复技术国家工程实验室, 北京 100012 
changsheng83@163.com 
付青 中国环境科学研究院国家环境保护饮用水水源地保护重点实验室, 北京 100012
中国环境科学研究院湖泊水污染治理与生态修复技术国家工程实验室, 北京 100012 
 
樊月婷 中国环境科学研究院国家环境保护饮用水水源地保护重点实验室, 北京 100012
中国环境科学研究院湖泊水污染治理与生态修复技术国家工程实验室, 北京 100012 
 
王恩瑞 中国环境科学研究院国家环境保护饮用水水源地保护重点实验室, 北京 100012
中国环境科学研究院湖泊水污染治理与生态修复技术国家工程实验室, 北京 100012 
 
孙兴滨 东北林业大学林学院, 哈尔滨 150040  
王山军 中国环境科学研究院国家环境保护饮用水水源地保护重点实验室, 北京 100012
中国环境科学研究院湖泊水污染治理与生态修复技术国家工程实验室, 北京 100012 
 
中文摘要
      多环芳烃是水环境中普遍存在的有害污染物,了解多环芳烃的污染特征与风险水平对饮用水源地的可持续发展及饮水安全具有重要意义.为此,采用固相萃取-气相色谱-质谱定性定量分析法对内蒙古东北部地区的满洲里和新右旗饮用水源33个(包含22个地下水和11个地表水)采样点中多环芳烃的残留进行了测定,分析了多环芳烃的污染水平并进行了健康和生态风险评估.结果表明,研究区域饮用水源水体33个采样点均有PAHs检出,除苯并[k]荧蒽、苯并[a]芘和二苯并[a,h]蒽这3种单体检出率范围为36.36%~95.45%外,其余13种PAHs单体检出率均为100%.ρ(ΣPAHs)检出范围为42.76~164.50 ng·L-1,平均值为90.82 ng·L-1,其中地表水和地下水中ρ(ΣPAHs)检出范围分别为66.39~164.50 ng·L-1和42.76~147.70 ng·L-1.检出的PAHs单体ρ(萘)最大,平均值达36.91 ng·L-1ρ(蒽)最小,仅为0.81 ng·L-1,其中地下水与地表水采样点中各PAHs单体检出浓度没有明显差异(P>0.05).PAHs的污染处于国内外中等水平,主要以中低环为主(3~4环).采用比值特征法和主成分分析法对研究区域地下水和地表水中PAHs的来源进行解析表明,研究区域饮用水源水体中PAHs主要受到煤及生物质燃烧和石油燃烧的影响,部分地表水源水体受到石油源的影响.健康和生态风险评估结果表明,饮用水源地水体不会对人体造成健康风险,生态风险处于中等水平,但其中苯并[b]荧蒽(BbF)单体产生风险较高应引起持续地关注,从饮用水源地的可持续发展与饮水安全角度出发,应考虑采取必要监管与保护措施以防止进一步的污染.结果为饮用水源地PAHs的污染治理与防控提供了科学依据.
英文摘要
      Polycyclic aromatic hydrocarbons (PAHs) are hazardous and ubiquitous pollutants in the aquatic environment, and understanding the pollution characteristics and risk levels of PAHs is of great significance to the sustainable development of drinking water sources and drinking water safety. Hence, PAHs residues were measured qualitatively and quantitatively with solid-phase extraction-gas chromatography-mass spectrometry (SPE-GC-MS) in 33 water samples (including 22 groundwater and 11 surface water samples) of the drinking water sources in the Manzhouli and Xinyouqi areas of northeast Inner Mongolia, and assessments of the pollution level of PAHs and the health and ecological risks were carried out. The results showed that PAHs were detected in all 33 sampling points of Manzhouli drinking water sources, except for benzo[k] fluoranthene, benzo[a] pyrene, and dibenzo[a,h] anthracene, with detection rates ranging from 36.36% to 95.45%; the detection rates of the other 13 PAHs monomers were 100%. The detection range of ρ(ΣPAHs) was 42.76-164.50 ng·L-1, and the mean value was 90.82 ng·L-1. The detection ranges of ρ(ΣPAHs) in surface water and groundwater were 66.39-164.50 ng·L-1 and 42.76-147.70 ng·L-1, respectively. The concentration of the detected naphthalene was the highest, with a mean value of 36.91 ng·L-1, and the concentration of anthracene was the lowest, with a mean value of 0.81 ng·L-1; there were no significant differences among the concentrations of all the PAHs monomers of the surface and groundwater (P>0.05). The pollution of PAHs was at a median level in China and abroad, mainly in the middle and low loops (3-4 loops). The analysis of the sources of PAHs in groundwater and surface water in Manzhouli using the ratio feature method and principal component analysis showed that the PAHs in the drinking water source water bodies in the Manzhouli area were mainly affected by the combustion of coal and biomass and oil, and some surface water sources were affected by the oil source. The human health and ecological risk assessment results showed that the water body of drinking water would not cause health risks to the human body, and the ecological risk was at a medium level; however, the high risk of benzo[b] fluoranthene (BbF) monomer production should be continuous cause for concern. From the perspective of the sustainable development of drinking water sources and drinking water safety, the necessary supervision and protection measures should be considered to prevent further pollution. The results of this research provide a scientific basis for the pollution control and prevention and control of PAHs in drinking water sources.

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