農村環境整備の科学, 農村環境整備センター編, B5判, 136pp., 3,502円, 朝倉書店(東京), 1995年 (original) (raw)
1995, Japanese Journal of Soil Science and Plant Nutrition
by a secolld one of pH 4． 1 − 4． 2 ， which was characterized by the disappearance or decreased levels of alkalinity ， Ca and Mg ， and simultaneous increase in the Al level in eluted water ． The third buffering region areund pH 3． 2 was observed only in the 2 nd series of the experiment where the Fe level was increased． The ratio of Mg ／ Ca and Si level in eluted water and input ・ S／ ouput − S ratio beca 皿 e higher w 正 th the progressive load of acid ， suggesting the destruction of clay minerals ． Spiked elution of Zrl a 且 d Cd was found at around 4 cmol (十) kgml of the acid load． These metals in additiQn to Mn appeared again in the 2nd and 3rd buffering regions ． Key words acid buffering capacity ， leaching ， column potentially toxic ele皿 ents ， sewage sludge ， soi 丑
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