Factors influencing the national distribution of polycyclic aromatic hydrocarbons and polychlorinated biphenyls in British soils
Factors influencing the national distribution of polycyclic aromatic hydrocarbons and polychlorinated biphenyls in British soils
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DOI：
10.1021/es061296x
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发表时间：
2006-12-15
影响因子：
11.4
通讯作者：
Spurgeon, David J.
中科院分区：
文献类型：
--
作者：
Heywood, Elizabeth;Wright, Julian;Spurgeon, David J.
多环芳烃 (PAH) 萘、苊、苊、芴、荧蒽、芘、苯并[a]蒽、屈、苯并[b]荧蒽、苯并[k]荧蒽、苯并[a]芘、艾并[1,2,3,-cd]芘、 二苯并[a, h]蒽、苯并[g, h, i]苝和多氯联苯(PCB) 8、18、28、29、31、52、77、101、105、114、118、123、126、128、138、141、149、 153、156、157、163、169、170、171、180、183、 187、189、194、199、201、206 和 209 在英国 (GB) 类似的 200 个农村土壤中进行了测量。较重化合物（4 - 6 环）对土壤 PAH 分布的主导作用为证明来源在控制土壤 PAH 浓度方面的重要性提供了初步证据。土壤有机质 (SOM) 与总 PAH 和“重”PAH 总浓度之间没有发现任何关系，尽管与较轻化合物存在微弱的正相关关系。空间统计技术表明，最高的土壤多环芳烃浓度通常出现在工业/城市中心附近，这些地方可能是源强度最高的。 PCB 分为七组，其中五组含有单一“二恶英类”PCB，一组含有较轻的同系物（2 - 4 个氯），一组含有重同系物（5 - 10 个氯）。 SOM 的线性回归解释了五至十同源物总浓度的高达 24.3% 的变异，但较轻的同源物组的变异小于 1%。没有发现与纬度有显着关系。空间统计技术显示，土壤多氯联苯浓度高的区域主要集中在英国西部和东南部，要么与城市化地区有关，要么位于西海岸。
The polycyclic aromatic hydrocarbons (PAHs) naphthalene, acenaphthylene, acenaphthene, fluorene, fluoranthene, pyrene, benzo[a]anthracene, chrysene, benzo[b]fluoranthene, benzo[k]fluoranthene, benzo[a]pyrene, ideno[1,2,3,-cd]pyrene, dibenz[a, h] anthracene, benzo[g, h, i] perylene and the polychlorinated biphenyls (PCBs) 8, 18, 28, 29, 31, 52, 77, 101, 105, 114, 118, 123, 126, 128, 138, 141, 149, 153, 156, 157, 163, 169, 170, 171, 180, 183, 187, 189, 194, 199, 201, 206, and 209 were measured in similar to 200 rural soils across Great Britain (GB). Dominance of soil PAH profiles by heavier compounds (4 - 6 rings) provided initial evidence for the importance of source in governing soil PAH concentrations. No relationship was found between soil organic matter (SOM) and sum concentration of total and "heavy" PAHs, although there was a weak positive relationship with lighter compounds. A spatial statistical technique showed that highest soil PAH concentrations were usually found close to industrial/urban centers where presumably source intensity is highest. PCBs clustered into seven groups, five of which contained a single "dioxin like" PCB, one contained lighter congeners (2 - 4 chlorines), and one contained heavy congeners (5 - 10 chlorines). Linear regressions with SOM explained up to 24.3% of variation for the sum concentration of penta- to deca- congeners, but < 1% for the lighter congener groups. No significant relationships were found with latitude. Spatial statistical techniques showed clusters of high soil PCB concentrations predominantly in west and south east GB, either associated with urbanized areas or on the West coast.