Acta Scientiarum Naturalium Universitatis Pekinensis ›› 2017, Vol. 53 ›› Issue (5): 913-920.DOI: 10.13209/j.0479-8023.2017.096

• Orginal Article • Previous Articles     Next Articles

Risk Assessment of Perfluoroalkyl Compounds (PFCs) in Water and Sediment Samples of Hanjiang River

Jie LI1, Yue GAO1, Zhifen WANG1, Binwei WANG1, Hongshan HAO1, Yaru XU1, Tingting ZHU3, Nan XU1(), Jinren NI2   

  1. 1. Key Laboratory for Heavy Metal Pollution Control and Reutilization, School of Environment and Energy, Peking University Shen-zhen Graduate School, Shenzhen 518055
    2. The Key Laboratory of Water and Sediment Sciences (MOE), Department of Environ-mental Engineering, College of Environmental Sciences and Engineering, Peking University, Beijing 100871
    3. State Environmental Protection Key Laboratory of Drinking Water Source Management and Technology, Shenzhen Key Laboratory of Drinking Water Source Safety Control, Shenzhen Key Laboratory of Emerging Contaminants Detection & Control in Water Environment, Shenzhen Academy of Environmental Sciences, Shenzhen 518001;;
  • Received:2016-05-07 Revised:2016-05-29 Online:2017-09-09 Published:2017-09-20

汉江水体和沉积物中全氟化合物的风险评估

李杰1, 高月1, 王之芬1, 王斌伟1, 郝红珊1, 徐亚茹1, 朱婷婷3, 许楠1(), 倪晋仁2   

  1. 1. 北京大学深圳研究生院环境与能源学院, 重金属污染控制与资源化重点实验室, 深圳 518055
    2. 水沙科学教育部重点实验室, 北京大学环境科学与工程学院环境工程系, 北京 100871
    3. 国家环境保护饮用水水源地管理技术重点实验室, 深圳市饮用水水源地安全保障重点实验室, 深圳市水环境中新型污染物检测与控制重点实验室, 深圳市环境科学研究院, 深圳 518001
  • 基金资助:
    国家自然科学基金重点项目(51539001)资助

Abstract:

Contamination profiles of 11 kinds of perfluorinated compounds (PFCs) were analyzed by using ultra high performance liquid chromatography-triple quadrupole mass spectrometry in water and sediment samples of Hanjiang River in dry and wet seasons. The results showed that 11 kinds of PFCs were all detected. The total concentrations of PFCs in water and sediment were 0.3-23.04 ng/L, 0-55.1 ng/g in dry season and 0.16-19.68 ng/L, 0.99-85.07 ng/g in wet season. The maximum concentration of PFCs was detected in Wuhan where Hanjiang River feeds into Yangtze River. Meanwhile,Wuhan had the highest concentration of perfluorooctanoic acid (PFOA) with 22.52 ng/L in dry season and 12.52 ng/L in wet season. Perfluoroheptanoic acid (PFHpA) and perfluorohexanoic acid (PFHxA) were the dominant PFCs in sediment and the highest total concentration of PFCs was detected in Taocha. There was little difference in the concentration composition of ∑PFCs in sediment in both seasons. The risk quotient method was used for the ecological risk assessment of PFOA, perfluorooctane sulfonic acid (PFOS), perfluorononanoic acid (PFNA), PFHxA and perfluorodecanoic acid (PFDA) in water, and PFOA and PFOS in sediment based on the measured environmental concentration (MEC) and the predicted non-effect concentration (PNEC) of target pollutants.The assessment results suggest that the above PFCs in water and sediment of Hanjiang River posed no ecological risk to environment.

Key words: perfluoroalkyl compounds, Hanjiang River, water, sediment, risk assessment

摘要:

采集汉江旱季和雨季的水样和沉积物, 应用超高效液相色谱-三重四级杆质谱, 对其中的 11 种全氟化合物(PFCs)进行检测, 研究该区域全氟化合物的污染状况。结果表明, 11 种全氟化合物都有不同程度的检出, 旱季和雨季水样中∑PFCs 浓度分别为 0.3~23.04 和 0.16~19.68 ng/L, 沉积物中∑PFCs 浓度分别为 0~55.1 和0.99~85.07 ng/g。水样总浓度的最高值出现在汉江汇入长江处的武汉, 且武汉采样点的全氟辛酸(PFOA)浓度最高, 旱、雨季分别达到22.52和12.52 ng/L。沉积物中总浓度最高值出现在陶岔, 且以全氟庚酸(PFHpA)和全氟己酸(PFHxA)为主, 沉积物中组分组成的季节差异不大。采用实际检测到的水样中 PFOA、全氟辛烷磺酸盐(PFOS)、全氟壬酸(PFNA)、PFHxA 和全氟葵酸(PFDA)的浓度以及沉积物中 PFOA 和 PFOS 的浓度, 运用熵值法, 对汉江流域进行全氟化合物污染的风险评估, 结果表明, 水体和沉积物中的浓度均未达到对生态环境具有风险的水平。

关键词: 全氟化合物, 汉江, 水体, 沉积物, 风险评估