检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:杨柯[1,2,3] 姜建军[4] 刘飞[2,3] 白中科[5,6] 彭敏[1,2,3] 赵传冬[2,3] 李括[1,2,3] 刘应汉[2,3] 薄玮[3] 李兴红[7] 成杭新[2,3]
机构地区:[1]中国地质大学(北京)地球科学与资源学院,北京100083 [2]中国地质科学院地球表层碳-汞地球化学循环重点实验室,河北廊坊065000 [3]中国地质科学院地球物理地球化学勘查研究所,河北廊坊065000 [4]国土资源部科技与国际合作司,北京100812 [5]中国地质大学(北京)土地科学技术学院,北京100083 [6]国土资源部土地整治重点实验室,北京100035 [7]中国科学院生态环境研究中心环境化学与生态毒理学国家重点实验室,北京100085
出 处:《地学前缘》2016年第5期281-290,共10页Earth Science Frontiers
基 金:中国地质调查局地质调查项目(12120113002600)
摘 要:原煤的开采、储存、运输及其加工利用过程是多环芳烃(PAHs)污染的主要来源。由于缺乏相关系统调查数据,其对煤矿复垦区土壤环境质量的影响尚不明确。平朔煤矿复垦土地主要作为耕地利用,了解其PAHs污染状况直接关系粮食安全和人体健康。该研究通过野外实地调查,开展了平朔煤矿复垦区表层土壤中多环芳烃(PAHs)的毒性风险分析研究。在整个平朔煤矿45km。范围内,以500m×500m间距为基准,按照不同用地类型,采集了0~20cm深度土壤样品179个,再按照1km×1km单元格组合后分析。使用安捷伦高分辨气相色谱一低分辨质谱进行目标物的检测。加入代用标准2一氟联苯(2-FBP)以进行回收率控制。研究结果表明:土壤中16种EPA-PAHs的含量范围为213.60~2513.20ng·g-1,均值为717.09ng·g-1.PAHs成分特征显示主要以3~4环为主(52%),5~6环次之(42%),2环所占比例最低(6%)。使用相关分析法判定,主要污染来源为原煤。毒性风险分析结果显示,平朔煤矿土壤PAHs存在一定生态风险,当土地重新作为农田加以利用时,需要加以关注。Coal mining, storage, transportation and processing process is the main source of polycyclic aromatic hydrocarbons (PAHs) pollution, but its influence on soil environmental quality of opencast coal mine reclamation area is not clear, because of the lack of the systematic survey. Pingshuo opencast coal mine reclamation area is mainly used as cultivated land. Understanding its PAHs pollution condition is important to food security and human health. Through the field survey, this study conducted an ecological risk assessment of PAHs in soils. 179 surface soil samples (0 - 20 cm) were collected by 500 mX 500 m grid, then analyzed by 1 kmX 1 km compositional cell. Agilent high resolution gas chromatography- low resolution mass spectrometry (Agilent 6890 GC/5973i MS) were used for target detection and substitute standard 2-fluorine biphenyl (2-FBP) were added for recovery rate control. The total concentration of 16 EPA-PAHs ranged from 213.60 to 2513.20 ng/g with a mean value of 717. 09 ng/g. Individual composition of PAHs was of 52% for 3 - 4 rings, 42% for 5- 6 ring and 6~ for 2 ring respectively. A correlation analysis determined that the mainpollution source is coal. According to the results of ecological risk assessment, the reuse of reclamation land as cultivated land should be paid more attention on PAHs pollution in soils.
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.43