Tucaković Ivana, Barišić Delko, Grahek Željko, Kasap Ante, Širić Ivan
Laboratory for Radioecology, Division for Marine and Environmental Research, Ruđer Bošković Institute, PO Box 160, Bijenička cesta 54, 10002 Zagreb, Croatia.
Laboratory for Radioecology, Division for Marine and Environmental Research, Ruđer Bošković Institute, PO Box 160, Bijenička cesta 54, 10002 Zagreb, Croatia.
J Environ Radioact. 2018 Jan;181:147-151. doi: 10.1016/j.jenvrad.2017.11.004. Epub 2017 Nov 15.
The aim of this study was to select species with higher potential to accumulate Cs among the available mushroom species, by determining the activity concentrations of Cs in mushrooms collected along north and north-western part of Croatia. A total of 55 samples of 14 different species were analyzed and the potential of mycorrhizal and saprotrophic species to accumulate Cs was compared. A wide range of the dry weight activity concentrations of Cs was detected, ranging from 0.95 to 1210 Bq/kg (154 Bq/kg mean value; 52.3 Bq/kg geometric mean) in mycorrhizal and 1.05-36.8 Bq/kg (8.90 Bq/kg mean value; 5.49 Bq/kg geometric mean) in saprotrophic species. Statistical analyses showed that mycorrhizal species accumulate significantly higher concentrations of Cs and thus could perform better as long-term bioindicators of environmental pollution by radiocaesium then saprotrophic species. The comparison of Boletus sp. and Hydnum repandum (both mycorrhizal species commonly found in Croatia) showed, in general order of magnitude, higher accumulation in Hydnum repandum. Clearly, mushrooms, especially mycorrhizal species, can be used as significant indicators even decades after the occurrence of any serious Cs contamination event. However, as a wide range of values indicates that various parameters may influence the total uptake of the Cs into the mushroom fruit bodies, it is necessary to emphasize that Cs activity detected in a single mushroom sample is very site-specific.
本研究的目的是通过测定在克罗地亚北部和西北部采集的蘑菇中铯的活度浓度，从现有的蘑菇物种中选择具有较高铯积累潜力的物种。共分析了14个不同物种的55个样本，并比较了菌根物种和腐生物种积累铯的潜力。检测到铯的干重活度浓度范围很广，菌根物种中铯的干重活度浓度为0.95至1210 Bq/kg（平均值为154 Bq/kg；几何平均值为52.3 Bq/kg），腐生物种中铯的干重活度浓度为1.05至36.8 Bq/kg（平均值为8.90 Bq/kg；几何平均值为5.49 Bq/kg）。统计分析表明，菌根物种积累的铯浓度显著更高，因此作为放射性铯环境污染的长期生物指示物，其表现可能比腐生物种更好。对克罗地亚常见的两种菌根物种牛肝菌属和齿菌进行比较，结果表明，总体而言，齿菌的铯积累量更高。显然，即使在发生任何严重的铯污染事件几十年后，蘑菇，尤其是菌根物种，仍可作为重要指示物。然而，由于广泛的数值范围表明各种参数可能会影响铯进入蘑菇子实体的总吸收量，因此有必要强调，在单个蘑菇样本中检测到的铯活度具有很强的地点特异性。
