首页> 外文期刊>Environmental Geosciences >Concentrations of heavy metals and hydrocarbons in groundwater near petrol stations and mechanic workshops in Calabar metropolis, southeastern Nigeria
【24h】

Concentrations of heavy metals and hydrocarbons in groundwater near petrol stations and mechanic workshops in Calabar metropolis, southeastern Nigeria

机译:尼日利亚东南部卡拉巴尔都会区加油站和机械车间附近的地下水中重金属和碳氢化合物的浓度

获取原文
获取原文并翻译 | 示例
获取外文期刊封面目录资料

摘要

Groundwater and soil samples from 16 locations near petrol stations (PS) and mechanic workshops (MW) around Calabar, Nigeria, were analyzed for heavy metals and hydrocarbons to determine their concentrations and assess the impact of the PS and MW on groundwater in the area. Results show that mean concentrations of arsenic, cadmium, chromium, copper, iron, mercury, manganese, nickel, lead, and zinc in groundwater are higher than the reference data (maximum admissible concentration, baseline value, and control site value). The mean concentration of total organic content in soil is low (4.03%), but the mean concentrations of total petroleum hydrocarbons (46.87 mg kg–1) and naphthalene (340.00 µg g–1) in the soil are high in comparison to the reference data. The mean concentrations of parameters in soil and groundwater are higher where PS and MW are located near each other (PS/MW). The mean total hydrocarbon content (0.66 mg L–1) and total polycyclic aromatic hydrocarbon (PAH) (66.64 µg L–1) in groundwater are higher than the maximum admissible concentration of 0.1 mg L–1 and 0.2 µg L–1, respectively. The concentration of PAH compounds with mean concentrations greater than 1 µg L–1 are of the order phenanthrene > anthracene > fluorene naphthalene. The ratios of phenanthrene/anthracene, fluoranthene/pyrene, and benzo(a)anthracene/chrysene and factor analysis indicate several sources for the PAH. The most important sources include anthropogenic (petrogenic, pyrolytic) and natural.
机译:分析了尼日利亚卡拉巴尔附近加油站和附近的16个地点的地下水和土壤样本的重金属和碳氢化合物,以测定其重油> 浓度,并评估PS和MW对该地区地下水 的影响。结果表明,地下水中砷,镉,铬,铜,铁,汞,锰,镍,铅和锌的平均浓度均高于参考 数据(最大容许浓度,基线值和 对照位点值)。土壤中总有机 的平均浓度较低(4.03%),但总石油烃的平均浓度 (46.87 mg kg –1 )和土壤中的萘 (340.00 µg g –1 )与参考数据相比 高。 PS和MW彼此靠近的地方土壤和地下水中参数 的平均浓度较高(PS / MW)。平均总烃含量 (0.66 mg L –1 )和总多环芳烃 (PAH)(66.64 µg L –1 )高于 的最大允许浓度0.1 mg L –1 0.2 µg L –1 。平均浓度大于1 µg L –1 的PAH 化合物的浓度为菲>蒽>芴 萘。 菲/蒽,荧蒽/ py, 和苯并(a)蒽/ ch和因子分析表明 PAH的多种来源。最重要的来源包括 人为的(成岩的,热解的)和自然的。

著录项

  • 来源
    《Environmental Geosciences》 |2007年第1期|15-29|共15页
  • 作者单位

    Department of Geology, University of Calabar, PMB 1115, Nigeria ntonzi@yahoo.com;

    Department of Geology, University of Calabar, PMB 1115, Nigeria;

    Department of Geology, University of Calabar, PMB 1115, Nigeria;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号