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首页> 外文期刊>Environmental Monitoring and Assessment >Monitoring of soil and groundwater contamination following a pipeline explosion* and petroleum product spillage in Ijegun,Lagos Nigeria
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Monitoring of soil and groundwater contamination following a pipeline explosion* and petroleum product spillage in Ijegun,Lagos Nigeria

机译：在尼日利亚拉各斯的伊杰贡，监测管道爆炸*和石油产品泄漏后的土壤和地下水污染

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In May 2008, an accidental damage of a Nigerian National Petroleum Corporation (NNPC) pipeline occurred in Ijegun area of Lagos, Nigeria, resulting in oil spillage and consequent contamination of the environment. The residual concentration of the total hydrocarbon (THC) and benzene, toluene, ethyl-benzene, and xylene (BTEX) in the groundwater and soil was therefore investigated between March 2009 and July 2010. Results showed elevated THC mean levels in groundwater which were above the World Health Organization maximum admissible value of 0.1 mg/1. THC values as high as 757.97 mg/1 in groundwater and 402.52 mg/1 in soil were observed in March 2009. Pronounced seasonal variation in the concentration of THC in groundwater and soil samples show that there was significant (P<0.05) difference in the measured concentration of THC between each season (dry and wet), with the highest being in the dry season and between the years 2009 and 2010. Significant hydrocarbon contamination, 500 m beyond the explosion site and 25 months after the incident, was observed revealing the extent of the spillage of petroleum products. The highest concentrations of 16.65 μg/1 (benzene), 2.08 μg/1 (toluene), and 4864.79 μg/1 (xylene) were found in stations within the 100 m buffer zone. Most of the samples of ground-water taken were above the target value of 0.2 μg/1 set for BTEX compounds by the Environmental Guidelines and Standards for Petroleum Industry in Nigeria. The level of hydrocarbon in the impacted area calls for concern and remediation of the area is urgently needed to reduce further negative impact on the ecosystem.
机译：2008年5月，尼日利亚国家石油公司（NNPC）的管道在尼日利亚拉各斯的Ijegun地区发生了意外损坏，导致漏油并因此污染了环境。因此，对2009年3月至2010年7月期间地下水和土壤中总烃（THC）和苯，甲苯，乙苯和二甲苯（BTEX）的残留浓度进行了调查。结果显示，地下水中THC的平均水平高于世界卫生组织的最大允许值为0.1 mg / 1。 2009年3月，地下水中的THC值高达757.97 mg / 1，土壤中的THC值高达402.52 mg / 1。地下水和土壤样品中THC浓度的明显季节性变化表明，土壤中THC的浓度存在显着差异（P <0.05）。在每个季节（干燥和潮湿）之间测得的THC浓度，最高的是在干燥季节以及2009年至2010年之间。在爆炸现场500 m附近和事故发生25个月后，观察到显着的碳氢化合物污染，表明石油产品泄漏的程度。在100 m缓冲区内的站点中发现了最高浓度16.65μg/ 1（苯），2.08μg/ 1（甲苯）和4864.79μg/ 1（二甲苯）。抽取的大多数地下水样品都高于尼日利亚《石油工业环境准则和标准》为BTEX化合物设定的目标值0.2μg/ 1。受灾地区的碳氢化合物含量引起人们的关注，并迫切需要对该地区进行补救，以减少对生态系统的进一步负面影响。

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