Abstract

The element concentrations in the fruitbodies of Leccinum scabrum from two forested upland sites and one lowland site of different geochemical background were compared to topsoil concentrations. The aim of the study was to establish baseline concentration datasets, gain insight into the species' bioconcentration potential and to assess the impact of anthropogenic factors. The validated methods for analysis include inductively coupled plasma-atomic emission spectroscopy (ICP-AES) and cold-vapor atomic absorption spectroscopy (CV–AAS). Bioinclusion (bioconcentration factor > 1) by L. scabrum was observed for the elements Ag, Cd, Cu, K, Hg, Mn, Na, Mg, P, Rb, and Zn. In contrast, the elements Al, Ba, Ca, Fe, Ni, and Sr as well as the toxic Pb were bioexcluded. Among these elements, the toxic elements Cd and Pb are noteworthy regarding the aspect of human mushroom consumption. The medians of Cd in caps of L. scabrum from the upland sites were in the range of 5.6–6.6 mg kg⁻¹dm, with a maximum in an individual sample of 14 mg kg⁻¹dm, which is in the range of concentrations reported previously for polluted soils. Lead concentrations were much lower, with medians in the range of 0.79–1.3 mg kg⁻¹dm in caps and 0.48–0.59 mg kg⁻¹dm in stipes. Mineral contents of L. scabrum appear to be the result of a complex interaction of a species’ characteristic physiology with local mineral soil geochemistry and with anthropogenic pollution factors.

摘要

将两个地球化学背景的森林高地站点和一个低地站点的鳞尾cc的子实体中的元素浓度与表土浓度进行了比较。该研究的目的是建立基线浓度数据集，深入了解该物种的生物富集潜力，并评估人为因素的影响。经过验证的分析方法包括电感耦合等离子体原子发射光谱法（ICP-AES）和冷蒸气原子吸收光谱法（CV–AAS）。Bioinclusion（生物浓度因子> 1）通过L. scabrum观察到Ag，Cd，Cu，K，Hg，Mn，Na，Mg，P，Rb和Zn的元素。相反，元素Al，Ba，Ca，Fe，Ni和Sr以及有毒Pb被生物排除。在这些元素中，有毒元素Cd和Pb在食用人类蘑菇方面值得注意。Cd的的帽中值L. scabrum从高地位点在5.6-6.6毫克公斤的范围^-1 DM，用14毫克千克的个体样品中的最大^-1 DM，其是在浓度范围以前曾报道过污染土壤。铅浓度要低得多，并在0.79-1.3毫克公斤的范围中位数^-1 DM在帽和0.48-0.59毫克千克^-1 DM在叶柄。ab的矿物质含量 似乎是物种的特征生理与当地矿质土壤地球化学以及人为污染因素之间复杂相互作用的结果。