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首页> 外文期刊>International journal of soil science >Bio-absorption of some heavy metals by Pleurotus tuber-regium Fr. Singer (an edible mushroom) from crude oil polluted soils amended with fertilizers and cellulosic wastes.
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Bio-absorption of some heavy metals by Pleurotus tuber-regium Fr. Singer (an edible mushroom) from crude oil polluted soils amended with fertilizers and cellulosic wastes.

机译：白灵菇-Fr对某些重金属的生物吸收。歌手（一种可食用的蘑菇）来自原油污染的土壤，并用肥料和纤维素废料进行了改良。

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摘要

In this study, the fate of Pleurotus tuber-regium harvested from crude oil contaminated substrates is investigated with regard to the bio-absorption of heavy metals specifically-Fe, Mn, Co, Ni, Zn, Cu, Pb, Cr, Cd, Hg and As. The fungus was grown in crude oil contaminated soils amended with poultry litter, NPK-fertilizer, sawdust and shredded banana leaf blades. Harvested fruit bodies were digested with acids and heavy metal content determined. The metallic element content of contaminated soil was low for elements analyzed for with reference to recommended limits for them in normal soils. The only metal that was relatively higher than permissible concentration in soil was chromium. The contaminated soil was deficient of essential metallic elements like Zn, Mn and Cu. There was further reduction of these metallic elements caused by their uptake by the fungus. Cadmium, mercury and arsenic were not detected in the soils and fruit bodies of the mushroom. The transfer of metals from the soils to the mushroom varied with type of metal, its concentration and substrate composition. The transfer factor of the various metals varied from 10.47 in zinc to 0.31 in iron. Fruit bodies from substrates with poultry litter accumulated Fe, Pb and Cr to toxic levels. Mushrooms harvested from crude oil contaminated sites should be analyzed before consumption and properly disposed by incineration or recycling if concentration of metals is too high. The fungus can be used as a bio-indicator of heavy metal pollution and fungal remediated sites can be augmented with micronutrients.
机译：在这项研究中，针对重金属-铁，锰，钴，镍，锌，铜，重金属的生物吸收，研究了从受石油污染的底物中收获的白灵菇的结局。铅，铬，镉，汞和砷真菌生长在受原油污染的土壤中，土壤经家禽垫料，NPK肥料，木屑和香蕉叶片切碎。用酸消化收获的子实体并测定重金属含量。对于被分析的元素，其污染元素的金属元素含量较低，但参考了在正常土壤中推荐的限量标准。相对高于土壤中允许的浓度的唯一金属是铬。被污染的土壤缺乏诸如锌，锰和铜等必需金属元素。这些金属元素由于被真菌吸收而进一步减少。在蘑菇的土壤和子实体中均未检测到镉，汞和砷。金属从土壤到蘑菇的转移随金属的类型，其浓度和底物组成而变化。各种金属的转移系数从锌的10.47到铁的0.31不等。带有家禽垫料的基质中的子实体积累的Fe，Pb和Cr达到毒性水平。在食用之前，应分析从原油污染地点收获的蘑菇，如果金属浓度过高，则应通过焚烧或回收来适当处置。真菌可用作重金属污染的生物指示剂，并且可以通过微量营养素增强真菌修复的位点。

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