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首页> 外文期刊>Journal of applied science & environmental management: JASEM >Distribution of different fractions of Iron, Zinc, Chromium, lead and Nickel in Soils around Petrol filling stations in selected Areas of Delta State, Nigeria
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Distribution of different fractions of Iron, Zinc, Chromium, lead and Nickel in Soils around Petrol filling stations in selected Areas of Delta State, Nigeria

机译：尼日利亚三角州选定地区加油站周围土壤中不同含量的铁，锌，铬，铅和镍的分布

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The geochemical forms of some heavy metals in soils around selected petrolfilling stations were studied in order to assess the mobility and bioavailability of the metals andhence their potential environmental risk. Water soluble fraction (F1) contained an average of0.97% iron, 1.40% zinc, 2.37% chromium, 2.08% lead and 41.96% nickel with the abundancetrend of Ni > Cr > Pb > Zn > Fe. Metal bound to exchangeable phase followed the sameabundance trend with an average of 6.46% nickel, 5.48% chromium, 2.64% lead, 2.55% zincand 0.62% iron. Lead was predominantly associated with carbonate fraction with an average of52.32% followed by iron with an average of 15.41%. Other metal average levels in thecarbonate fractions were 9.66% for nickel, 8.78% for chromium, and 8.73% for zinc giving theabundance trend of Pb > Fe > Ni > Cr > Zn. The most important metal in iron-manganese oxidephase was zinc with an average of 42.49%, followed by iron with an average of 32.82%. Theaverages of the other metals bound to this phase were 30.39%, 13.24% and 6.46% forchromium, lead and nickel respectively. The organic bound metals were in the abundance trendof Fe > Zn > Cr > Pb > Ni with average of 39.48% for iron, 30.87% for zinc, 23.03% forchromium, 8.54% for lead and 4.94% for nickel. Nickel with an average of 51.58% waspredominantly associated with the residual fraction. The other metals bound to this phase inorder of their importance to the fraction had the average of 22.75% for chromium, 13.96% forzinc, 12.24% for lead and 10.97% for iron. The mobility factor values of the metals weremoderately high with the abundance trend of Pb > Ni > Cr > Fe > Zn. The generally low levelsof the metals in the residual fraction coupled with the mobility factor trend suggest potential riskfor the metals.
机译：研究了某些加油站周围土壤中某些重金属的地球化学形式，以评估这些金属的迁移率和生物利用度，从而探讨其潜在的环境风险。水溶性级分（F1）平均含有0.97％的铁，1.40％的锌，2.37％的铬，2.08％的铅和41.96％的镍，其中Ni> Cr> Pb> Zn> Fe的丰度趋势。结合在可交换相上的金属也遵循相同的丰度趋势，平均为镍6.46％，铬5.48％，铅2.64％，锌2.55％和铁0.62％。铅主要与碳酸盐含量相关，平均含量为52.32％，其次是铁，平均含量为15.41％。碳酸盐馏分中其他金属的平均含量为镍为9.66％，铬为8.78％，锌为8.73％，给出了Pb> Fe> Ni> Cr> Zn的丰度趋势。铁-锰氧化物相中最重要的金属是锌，平均含量为42.49％，其次是铁，平均含量为32.82％。与此相结合的其他金属的铬，铅和镍的平均值分别为30.39％，13.24％和6.46％。有机结合金属的富集趋势为Fe> Zn> Cr> Pb> Ni，铁的平均含量为39.48％，锌的平均含量为30.87％，铬的平均含量为23.03％，铅的平均含量为8.54％，镍的平均含量为4.94％。镍含量平均为51.58％，主要与残留分数有关。依此级分的重要性而键合到该相的其他金属，铬的平均值为22.75％，锌的平均值为13.96％，铅的平均值为12.24％，铁的平均值为10.97％。金属的迁移率值中等程度地高，Pb> Ni> Cr> Fe> Zn的丰度趋势。残留部分中的金属含量通常较低，再加上迁移率趋势，表明金属具有潜在的风险。

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