Department of Chemistry, University of Trondheim, AVH, N-7055, Dragvoll, Norway.
Environ Monit Assess. 1990 Jan;14(1):77-87. doi: 10.1007/BF00394359.
Uptake in Hylocomium splendens and Sphagnum fuscum, of Zn, Cu, Cd, and Pb from artificial solutions of precipitation at ambient concentration levels was investigated. The primary objective was to study to what extent major cations and possibility anions in the precipitation might affect the uptake by competition or possibly by complexing reactions. In addition the effect on metal uptake of pH and temperature was studied. The uptake of Zn and partly Cu was lower from precipitation with a high content of seasalt. With increasing metal concentration an increasing amount of Zn and Cu accumulated in the moss. These observations suggest that cations in the precipitation such as Na(+) and Mg(2+) may affect the uptake by competition. Possibly also Cl(-) may interfere by complexing reactions. Uptake of Zn and Cd was pH dependent. The uptake of all four metals increased with temperature. The results from this work appear to be significant with respect to the interpreation of data from atmospheric deposition surveys based on moss analysis.
研究了大气降水环境浓度水平下，锌、铜、镉和铅在亮叶水青冈和黑藓中的吸收情况。主要目的是研究降水中原位存在的主要阳离子和可能的阴离子在竞争或可能的络合反应中对吸收的影响。此外，还研究了 pH 值和温度对金属吸收的影响。高盐度降水中锌和部分铜的吸收较低。随着金属浓度的增加，苔藓中积累的锌和铜的量也随之增加。这些观察结果表明，降水中的阳离子（如 Na(+) 和 Mg(2+)）可能会通过竞争影响吸收。Cl(-) 也可能通过络合反应产生干扰。锌和镉的吸收与 pH 值有关。四种金属的吸收均随温度升高而增加。本研究结果对于基于苔藓分析的大气沉降调查数据的解释具有重要意义。
