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某地区两个燃煤电厂周边农田土壤中多环芳烃污染特征及生态安全评价

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张晗, 刘凯, 邹天森, 吕占禄, 谷亚亚, 陆少游, 王慢想, 张金良. 某地区两个燃煤电厂周边农田土壤中多环芳烃污染特征及生态安全评价[J]. 环境化学, 2019, (8): 1832-1841. doi: 10.7524/j.issn.0254-6108.2018090401
引用本文: 张晗, 刘凯, 邹天森, 吕占禄, 谷亚亚, 陆少游, 王慢想, 张金良. 某地区两个燃煤电厂周边农田土壤中多环芳烃污染特征及生态安全评价[J]. 环境化学, 2019, (8): 1832-1841. doi: 10.7524/j.issn.0254-6108.2018090401
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ZHANG Han, LIU Kai, ZOU Tiansen, LV Zhanlu, GU Yaya, LU Shaoyou, WANG Manxiang, ZHANG Jinliang. Pollution characteristics and evaluation ecological safety of the polycyclic aromatic hydrocarbons(PAHs) pollution in surface soil of farmland around two coal-fired power plants[J]. Environmental Chemistry, 2019, (8): 1832-1841. doi: 10.7524/j.issn.0254-6108.2018090401
Citation: ZHANG Han, LIU Kai, ZOU Tiansen, LV Zhanlu, GU Yaya, LU Shaoyou, WANG Manxiang, ZHANG Jinliang. Pollution characteristics and evaluation ecological safety of the polycyclic aromatic hydrocarbons(PAHs) pollution in surface soil of farmland around two coal-fired power plants[J]. Environmental Chemistry, 2019, (8): 1832-1841. doi: 10.7524/j.issn.0254-6108.2018090401
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某地区两个燃煤电厂周边农田土壤中多环芳烃污染特征及生态安全评价

  • 1. 中国环境科学研究院, 北京, 100012;

  • 2. 温州市环境保护设计科学研究院, 温州, 325000;

  • 3. 深圳市疾病预防控制中心, 深圳, 518055;

  • 4. 韩国科学技术研究院(KIST), 绿色城市研究所, 能源储存研究中心, 首尔, 02792, 韩国

    • 通讯作者: 张金良, E-mail: zhangjl@craes.org.com
  • 基金项目:

    国家重点研发计划项目（2018YFC1801604）资助.

Pollution characteristics and evaluation ecological safety of the polycyclic aromatic hydrocarbons(PAHs) pollution in surface soil of farmland around two coal-fired power plants

  • 1. Chinese Research Academy of Environmental Sciences, Beijing, 100012, China;

  • 2. WenZhou Environmental Protection Institute of Design & Research, Wenzhou, 325000, China;

  • 3. Shenzhen Center for Disease Control and Prevention, Shenzhen, 518055, China;

  • 4. Center for Energy Storage Research, Green City Research Institute, Korea Institute of Science and Technology(KIST), Hwarang-ro 14-gil 5, Seongbuk-gu, Seoul, 02792, Korea

    • Corresponding author: ZHANG Jinliang, zhangjl@craes.org.com
  • Fund Project: Supported by National Key Research and Development Program of China (2018YFC1801604).

  • 摘要: 为了解与评价同一地区2个燃煤电厂（A和B）周边农田土壤多环芳烃的污染状况，按照点源扇形布点原则，在电厂周边常年主导上下风向1500 m范围内布点，在远离电厂10 km以上的常年主导风向的上风向设置对照点，参照《土壤环境监测技术规范》（HJ/T 166-2004）共采集33个农田土壤样品.取经过处理的样品5.00 g，用乙腈超声提取、浓缩后，HPLC法测定15种PAHs的含量.描述其空间分布特征，采用特征污染物分析、环数分析法及聚类分析等方法分析污染来源，运用荷兰分级标准评价法进行生态安全评价.结果显示运行57年的A电厂周边农田土壤中BaP为30.3 μg·kg-1（0.668-81.5 μg·kg-1），15种PAHs总量为482 μg·kg-1（107-1000 μg·kg-1），TEQ（BaP）为43.5 μg·kg-1（2.27-124 μg·kg-1），明显高于运行8年B电厂的7.32 μg·kg-1（2.56-15.0 μg·kg-1）、227 μg·kg-1（158-415 μg·kg-1）和10.3 μg·kg-1（3.90-20.1 μg·kg-1）以及对照区的9.62 μg·kg-1（0.347-23.9 μg·kg-1）、193 μg·kg-1（76.1-329 μg·kg-1）和12.7 μg·kg-1（0.499-31.9 μg·kg-1）.A电厂周边的常年主导上风向农田土壤样本的BaP和TEQ（BaP）15含量基本维持在对照区水平，下风向的超出对照区水平，最大值均位于1500 m处，超出荷兰土壤质量标准.B电厂周边的常年主导上、下风向农田土壤样本的BaP和TEQ（BaP）15含量与对照区相当，且均不超标.A电厂周边农田土壤中具有致癌风险的7种PAHs占总∑PAHs的41.3%，远高于B电厂的20.7%和对照区的25.8%.A电厂周边农田土壤中33.3%的PAHs点位处于中度污染水平，TEQ（BaP）15高于国内相似污染源，存在亟需关注的生态风险.B电厂周边农田土壤中PAHs整体处于轻微污染水平，TEQ（BaP）15低于生物质电厂.
    Abstract: In order to understand and evaluate the pollution status and ecological safety of PAHs in soil of farmland around two Coal-fired Power Plants(A and B) per the sector placement principle sample points are placed in 1500 meters circle away from two Coal-fired Power Plants, comparison point have been set at 10 km away upwind of the perennial dominant wind direction. A total of 33 samples were collected according to "Technical Specification of Soil Environmental Monitoring"(HJ/T 166-2004), 5.00 g of the treated sample was extracted and concentrated by acetonitrile ultrasound, and the content of 15 PAHs were determined by HPLC method. Finally, we analyzed the spatial distribution and component characteristics of measurement. The results showed that the mean level of BaP in the soil around A power plant(PP57) was 30.3 μg·kg-1 (range:0.668-81.5 μg·kg-1), the level of total PAHs and TEQ(BaP)15 was 482 μg·kg-1(range:107-1000 μg·kg-1) and 43.5 μg·kg-1 (range:2.27-124 μg·kg-1) respectively, which significantly higher than those around B power plant(PP8) and in the control area. In the upwind of dominant wind direction throughout the year, the levels of BaP and TEQ(BaP) around the A power plant were basically maintained at the control area level. In the downwind of dominant wind direction throughout the year, the levels of BaP and TEQ(BaP) were higher than those in the upwind direction and in control area. The maximum value were observed at 1500m on the downwind of dominant wind direction away from the plant, exceeding the Dutch soil quality standard. In the upwind and downwind of dominant wind direction throughout the year, the levels of BaP and TEQ(BaP) around the B power plant were basically maintained at the control area level, and they did not exceed the standard. The proportion of carcinogenic PAHs was occupied 41.3% in the farmland around the A power plant, which much higher than that in B power plant (20.7%)and in control area(25.8%). 33.3% of the PAHs in the farmland soil around the A power plant were at moderate pollution level, and the TEQ(BaP)15 were higher than those reported around the domestic similar pollution sources, thus Ecological Safety risks are existed and cannot be ignored. The PAHs in the farmland soil around the B power plant were in a slightly polluted level, and the TEQ (BaP)15 was lower than the biomass plant.
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  • 收稿日期:  2018-09-04
张晗, 刘凯, 邹天森, 吕占禄, 谷亚亚, 陆少游, 王慢想, 张金良. 某地区两个燃煤电厂周边农田土壤中多环芳烃污染特征及生态安全评价[J]. 环境化学, 2019, (8): 1832-1841. doi: 10.7524/j.issn.0254-6108.2018090401
引用本文: 张晗, 刘凯, 邹天森, 吕占禄, 谷亚亚, 陆少游, 王慢想, 张金良. 某地区两个燃煤电厂周边农田土壤中多环芳烃污染特征及生态安全评价[J]. 环境化学, 2019, (8): 1832-1841. doi: 10.7524/j.issn.0254-6108.2018090401
shu
ZHANG Han, LIU Kai, ZOU Tiansen, LV Zhanlu, GU Yaya, LU Shaoyou, WANG Manxiang, ZHANG Jinliang. Pollution characteristics and evaluation ecological safety of the polycyclic aromatic hydrocarbons(PAHs) pollution in surface soil of farmland around two coal-fired power plants[J]. Environmental Chemistry, 2019, (8): 1832-1841. doi: 10.7524/j.issn.0254-6108.2018090401
Citation: ZHANG Han, LIU Kai, ZOU Tiansen, LV Zhanlu, GU Yaya, LU Shaoyou, WANG Manxiang, ZHANG Jinliang. Pollution characteristics and evaluation ecological safety of the polycyclic aromatic hydrocarbons(PAHs) pollution in surface soil of farmland around two coal-fired power plants[J]. Environmental Chemistry, 2019, (8): 1832-1841. doi: 10.7524/j.issn.0254-6108.2018090401
shu

某地区两个燃煤电厂周边农田土壤中多环芳烃污染特征及生态安全评价

    通讯作者: 张金良, E-mail: zhangjl@craes.org.com
  • 1. 中国环境科学研究院, 北京, 100012;
  • 2. 温州市环境保护设计科学研究院, 温州, 325000;
  • 3. 深圳市疾病预防控制中心, 深圳, 518055;
  • 4. 韩国科学技术研究院(KIST), 绿色城市研究所, 能源储存研究中心, 首尔, 02792, 韩国
  • 收稿日期:  2018-09-04
基金项目:

国家重点研发计划项目（2018YFC1801604）资助.

摘要: 为了解与评价同一地区2个燃煤电厂（A和B）周边农田土壤多环芳烃的污染状况，按照点源扇形布点原则，在电厂周边常年主导上下风向1500 m范围内布点，在远离电厂10 km以上的常年主导风向的上风向设置对照点，参照《土壤环境监测技术规范》（HJ/T 166-2004）共采集33个农田土壤样品.取经过处理的样品5.00 g，用乙腈超声提取、浓缩后，HPLC法测定15种PAHs的含量.描述其空间分布特征，采用特征污染物分析、环数分析法及聚类分析等方法分析污染来源，运用荷兰分级标准评价法进行生态安全评价.结果显示运行57年的A电厂周边农田土壤中BaP为30.3 μg·kg-1（0.668-81.5 μg·kg-1），15种PAHs总量为482 μg·kg-1（107-1000 μg·kg-1），TEQ（BaP）为43.5 μg·kg-1（2.27-124 μg·kg-1），明显高于运行8年B电厂的7.32 μg·kg-1（2.56-15.0 μg·kg-1）、227 μg·kg-1（158-415 μg·kg-1）和10.3 μg·kg-1（3.90-20.1 μg·kg-1）以及对照区的9.62 μg·kg-1（0.347-23.9 μg·kg-1）、193 μg·kg-1（76.1-329 μg·kg-1）和12.7 μg·kg-1（0.499-31.9 μg·kg-1）.A电厂周边的常年主导上风向农田土壤样本的BaP和TEQ（BaP）15含量基本维持在对照区水平，下风向的超出对照区水平，最大值均位于1500 m处，超出荷兰土壤质量标准.B电厂周边的常年主导上、下风向农田土壤样本的BaP和TEQ（BaP）15含量与对照区相当，且均不超标.A电厂周边农田土壤中具有致癌风险的7种PAHs占总∑PAHs的41.3%，远高于B电厂的20.7%和对照区的25.8%.A电厂周边农田土壤中33.3%的PAHs点位处于中度污染水平，TEQ（BaP）15高于国内相似污染源，存在亟需关注的生态风险.B电厂周边农田土壤中PAHs整体处于轻微污染水平，TEQ（BaP）15低于生物质电厂.

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