半城市加油站和汽车机修厂周边土壤多环芳烃和重金属污染评价半城市加油站和汽车机修厂周边土壤多环芳烃和重金属污染评价

IF 0.8 Q3 MULTIDISCIPLINARY SCIENCES
G. U. Sikakwe, A. Tyopine, God’swill Abam Eyong
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引用次数: 2

摘要

本研究对加油站和汽车修理厂周边土壤重金属和多环芳烃(PAHs)污染物进行了评价。土壤样品采集深度为0 ~ 15 cm。采用原子吸收分光光度法对有毒重金属进行了分析。采用索氏提取法对多环芳烃进行植物化学色谱分析。土壤呈弱酸性(6.12 ~ 6.81)。土壤重金属平均含量变化趋势为铅(Pb) >镍(Ni) >钒(V) >镉(Cd)。多环芳烃的平均含量顺序为:1,2-苯并蒽芘>蒽>芴>苯并(b)氟蒽> 1,1,2-苯并芘(bhip) >萘(Naph) >二苯并(a, h)蒽> 1,2-苯并蒽>苯并(k)氟蒽>菲>芘>二甲苯>苊。Pearson相关分析和主成分分析表明,重金属主要来源于汽车尾气和母岩。土壤污染指数和Numerov复合污染指数显示土壤安全、清洁,未受重金属污染。重金属的平均水平低于欧盟(2006年)未受污染土壤的允许值。多环芳烃的平均值在未受污染的农业、森林和住宅土壤的允许标准之内。多环芳烃的诊断比值和主成分分析结果表明,土壤中的多环芳烃是由汽油和煤油的热原燃烧和内燃产生的。这种重金属和多环芳烃土壤污染评估方法对尼日利亚和世界其他地区的污染评估人员来说是非常宝贵的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Assessment of Polycyclic Aromatic Hydrocarbons and Heavy Metal Pollutants in Soil Around Semi Urban Petrol Stations and Automobile Mechanic WorkshopsAssessment of Polycyclic Aromatic Hydrocarbons and Heavy Metal Pollutants in Soil Around Semi Urban Petrol Stations and Automobile Mechanic Workshops
This study assessed the heavy metals and polycyclic aromatic hydrocarbons (PAHs) pollutant in soil around petrol filling stations and automobile mechanic workshops. Samples of soil were acquired from the depth range of 0–15 cm. Toxic heavy metals were analyzed with atomic absorption spectrophotometry. The PAHs were analyzed using phytochemical chromatographic analysis by the Soxhlet extraction method. The soil tested was weakly acidic (6.12–6.81). The trend of the heavy metals’ mean levels in soil followed the order: lead (Pb) > nickel (Ni) > vanadium (V) > cadmium (Cd). The mean levels of PAHs were in the order: 1,2-benzanthracene pyrene > anthracene > fluorene > benzo(b)fluoranthene > 1,1,2-benzopyrelene (BghiP) > naphthalene (Naph) > Dibenz(a, h)anthracene > 1, 2 benzanthracene > benzo(k)fluoranthene > phenanthrene > pyrene > xylene > acenapthylene. Pearson correlation and principal component analysis (PCA) revealed the heavy metals were generated from automobile exhaust and parent rocks. Soil pollution index and Numerov composite pollution index revealed that the soil is safe, clean, and unpolluted with heavy metals. The mean levels of heavy metals were below the European Union (2006) permissible values for uncontaminated soil. The PAH mean values were within permissible standards for unpolluted agricultural, forest, and residential soils. The diagnostic ratios of PAHs, supported by PCA, showed that PAHs in soil were produced by pyrogenic and internal combustion of gasoline and kerosene. This method of soil contamination assessment by heavy metals and PAHs is invaluable for pollution assessors in Nigeria and another area in the world.
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来源期刊
Makara Journal of Science
Makara Journal of Science MULTIDISCIPLINARY SCIENCES-
CiteScore
1.30
自引率
20.00%
发文量
24
审稿时长
24 weeks
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