MERCURY ACCUMULATION IN WILD MUSHROOMS AT ABANDONED Hg-DEPOSIT MALACHOV (SLOVAKIA)

IF 0.9 4区 环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES
P. Andras, Pavol Midula, Ján Grofčík, M. Drímal, V. Dirner, M. Rusko, J. Dadová, Ingrid Turisová
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Abstract

The aim of the presented article was to determine the Hg content in the fruiting bodies of 13 generally consumed mushroom species (Boletus reticulatus, Clitocybe nebularis, Lactarius deliciosus, Macrolepiota procera, Russula spp., Suillus grevillei, Tricholoma spp.) growing at the area of abandoned mercury deposit Malachov. The Hg concentrations were analyzed by thermal decomposition-gold amalgamation atomic absorption spectroscopy, using AMA-254 Advanced Mercury Analyzer. The Hg concentrations in soil varied widely (ranging from 0.01 to 2.44mg·kg-1), furthermore, they were particularly depended on the mushroom species. The fruiting bodies of Russula ochroleuca contained the highest concentrations of Hg (up to 16.69mg·kg-1). The lowest concentrations were detected in Russula aeruginea (from 0.04 to 0.06 in stipe stems and from 0.05 to 0.06mg·kg-1 in pileus) and in Russula vesca (0.05 in stipe stems; 0.09mg·kg-1 in pileus). Mercury is preferentially accumulated in the mushroom pileus (ranging from 0.05 in Russula vesca to 16.69mg·kg-1 in Russula ochroleuca). The bioconcentration factor was calculated for the rate of the Hg content in soil substrate vs. its concentration in the mushroom pileus (ranging from 0.03 to 29.22). The results indicate that some investigated mushroom species can be referred as Hg excluders (e.g. Russula vesca) whereas some other species as accumulators (e.g. Russula ochroleuca or Tricholoma portentosum). The obtained results were compared with the Government Decrees of Slovak Republic, showing that the substantial part of the studied mushroom species exceed the legal tolerance limit (0.25 mg kg-1) suggested for Hg in plant food and therefore they can be considered as inappropriate for human consumption.
废弃汞矿床MALACHOV(SLOVAKIA)野生蘑菇中汞的积累
本文旨在测定生长在Malachov废弃汞矿区的13种常见食用菌(Boletus reticulatus、Clitocybe nebullaris、Lactarius deliciosus、Macrolepiota procera、Russula spp.、Suillus grevillei、Tricholoma spp.)子实体中汞的含量。采用AMA-254型高级汞分析仪,采用热分解-金汞齐原子吸收光谱法分析汞浓度。土壤中汞的含量变化幅度较大(0.01 ~ 2.44mg·kg-1),且主要依赖于菌种。其中,乌苏娜子实体中汞含量最高,达16.69mg·kg-1。其中绿Russula aeruginea的浓度最低(柄柄为0.04 ~ 0.06mg·kg-1,菌毛为0.05 ~ 0.06mg·kg-1), Russula vesca的浓度最低(柄柄为0.05 mg·kg-1;菌毛0.09mg·kg-1)。汞优先积聚在蘑菇菌毛中(在紫菇中为0.05 mg·kg-1,在紫菇中为16.69mg·kg-1)。计算了土壤基质中汞含量与菌毛中汞含量比值的生物富集系数(范围为0.03 ~ 29.22)。结果表明,部分真菌属汞排除菌(如紫菇),部分真菌属汞积累菌(如紫菇、门口蘑)。所获得的结果与斯洛伐克共和国政府法令进行了比较,表明所研究的蘑菇种类的大部分超过了植物性食品中汞的法定容许限度(0.25 mg kg-1),因此可以认为它们不适合人类食用。
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来源期刊
CiteScore
2.30
自引率
25.00%
发文量
42
审稿时长
12-24 weeks
期刊介绍: The publishing of CARPATHIAN JOURNAL of EARTH and ENVIRONMENTAL SCIENCES has started in 2006. The regularity of this magazine is biannual. The magazine will publish scientific works, in international purposes, in different areas of research, such as : geology, geography, environmental sciences, the environmental pollution and protection, environmental chemistry and physic, environmental biodegradation, climatic exchanges, fighting against natural disasters, protected areas, soil degradation, water quality, water supplies, sustainable development.
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