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通过有机化合物种类(包括儿茶酚、氢醌、抗坏血酸等)和浓度、pH、溶解时间以及铁、锰氧化物的形态等因素对各种土壤中的铁、锰溶解量的影响,研究了若干有机化合物与土壤中铁、锰氧化物之间进行的表面化学反应.结果表明,有机化合物的结构状况、还原强度和(或)络合强度是决定铁、锰溶解量的主要因素.根据溶解速率分析和土壤中铁、锰氧化物为磷酸盐和Cd~(2+)预吸附后引起铁、锰溶解量降低等结果,提出土壤中表面反应机制的初步设想.
The effects of organic compounds (including catechol, hydroquinone, ascorbic acid, etc.), concentration, pH, dissolution time, and the forms of iron and manganese oxides on the amounts of dissolved iron and manganese in soils were studied. Organic compounds and iron and manganese oxides in soil.The results show that the structure, reduction and / or complexing intensity of organic compounds are the main factors that determine the amount of dissolved iron and manganese.According to the analysis of dissolution rate And the iron and manganese oxides in the soil as phosphate and the pretreatment of Cd 2+ lead to the decrease of the dissolved amount of iron and manganese. The preliminary idea of the surface reaction mechanism in soil is proposed.