Agricultural University of Tirana, Koder Kamez, Tirana, Albania.
Environ Monit Assess. 2014 Jun;186(6):3595-603. doi: 10.1007/s10661-014-3642-8. Epub 2014 Feb 12.
The study analysed the content of heavy metals in surface soil and sediment samples from the Bregu i Matit Plain in NW Albania in relation to irrigation in order to evaluate the soil pollution and the potential risk to human health. Evaluation of soil pollution was performed using the enrichment factor and geo-accumulation index. Contents of cadmium, chromium and nickel of irrigated soils were significantly higher than those of non-irrigated soil, while contents of lead (in three of the irrigated locations), zinc and arsenic (in one of the irrigated locations) were significantly lower. Correlation analysis (CA) and principal component analysis (PCA) indicated that the primary source of the first three metals was irrigation, and the last three metals were originated from other anthropic sources, like the use of chemicals, etc. Enrichment factor (E f) calculation showed that irrigated soils were most enriched in cadmium, chromium, copper and nickel. Index of geo-accumulation (I geo) revealed that arable soils of Bregu i Matit are unpolluted to moderately polluted with cadmium, chromium, copper and zinc and moderately to strongly polluted with nickel and arsenic. The presence of heavy metals in the studied soils indicates a potential risk of transfer of these elements in the food chain. Therefore, further studies on the speciation of heavy metals in the studied soils in order to evaluate their mobility are needed.
该研究分析了阿尔巴尼亚西北部布雷古伊·马蒂平原表层土壤和沉积物样本中的重金属含量与灌溉之间的关系，以评估土壤污染和对人类健康的潜在风险。采用富集因子和地积累指数评价土壤污染。灌溉土壤中镉、铬和镍的含量明显高于未灌溉土壤，而铅（在三个灌溉地点中）、锌和砷（在一个灌溉地点中）的含量明显较低。相关分析（CA）和主成分分析（PCA）表明，前三种金属的主要来源是灌溉，后三种金属则来自其他人为源，如化学品的使用等。富集因子（E f）计算表明，灌溉土壤中镉、铬、铜和镍的富集程度最高。地积累指数（I geo）表明，布雷古伊·马蒂的耕地土壤中镉、铬、铜和锌处于无污染到中度污染，镍和砷处于中度到强污染。研究土壤中重金属的存在表明这些元素在食物链中转移的潜在风险。因此，需要进一步研究研究土壤中重金属的形态，以评估其迁移性。
