Fritsche U
Fraunhofer-Institut für Umweltchemie und Okotoxikoloie, D-5948 Schmallenberg-Grafschaft, FRG.
Environ Pollut. 1992;75(2):251-7. doi: 10.1016/0269-7491(92)90047-e.
Leaching, depending on the acidity of the eluent, was investigated for K, Mg and Mn. The curves for the leachate concentration versus time could be described by a power function. Leaching from old needles exceeded leaching from young needles to a high degree, but the ratios of the leached elements were almost equal. A method for continuous measurements of pH change in solutions contacting plant materials was developed. The results were in agreement with data on acidity changes in water falling through spruce or beech canopies.
根据洗脱液的酸度，对钾、镁和锰进行了浸出研究。浸出液浓度随时间变化的曲线可用幂函数来描述。老针叶的浸出量在很大程度上超过了幼针叶，但浸出元素的比例几乎相等。开发了一种连续测量与植物材料接触的溶液中pH变化的方法。结果与通过云杉或山毛榉树冠落下的水中酸度变化的数据一致。
