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Morais Ultramafic Complex: A Survey towards Nickel Phytomining

机译：莫赖斯超镁铁质复合物：镍植物提取研究

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摘要

Ultramafic areas are critical for nickel (Ni) phytomining due to the high concentration of this element in their soils and the number of hyperaccumulators they harbor. The aim of the present study was to evaluate the potential of the Morais massif, an ultramafic area in Portugal, for phytomining using the hyperaccumulator species Alyssum serpyllifolium subsp. lusitanicum . Soil samples and A. serpyllifolium specimens were collected in four locations of the Morais massif. After determination of Ni concentrations in the samples, the results show that soil pseudo-total Ni concentrations in sites number 1 and 2 are significantly higher than in the soil samples collected in the other two locations, with 1918 and 2092 mg kg ?1 , respectively. Nickel accumulation is significantly greater in the aerial parts of plants collected at sites 1, 2, and 4, presenting Ni harvestable amount means of 88.36, 93.80, and 95.56 mg per plant, respectively. These results suggest that the sites with highest potential for phytomining are sites 1, 2, and 4. A nickel agromining system in these locations could represent an additional source of income to local farmers, since ultramafic soils have low productivity for agriculture and crop production.
机译：超镁铁质区域对于镍（Ni）植物的生化至关重要，因为该元素在土壤中的浓度很高，并且拥有大量的超蓄积物。本研究的目的是评估葡萄牙超镁铁质地区Morais massif在利用超富集种香雪球菌亚种（Alyssum serpyllifolium subsp）进行植物采矿方面的潜力。 lusitanicum。在Morais地块的四个位置收集了土壤样品和A. serpyllifolium标本。测定样品中的镍浓度后，结果表明，第1和2号站点的土壤伪总Ni浓度显着高于在其他两个地点收集的土壤样品，分别为1918和2092 mg kg？1。 。在站点1、2和4收集的植物的空中部分，镍的积累显着更大，分别代表每棵植物88.36、93.80和95.56 mg的镍可收获量。这些结果表明，最有可能进行植物种植的地点是地点1、2和4。由于超镁铁质土壤对农业和农作物的生产力低下，这些地点的镍农业种植系统可能为当地农民带来额外的收入来源。

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