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测定了pH值、离子强度变化以及有机物、铜、钙和磷酸盐的浓度对由实验室制备的腐植有机质萃取物土壤和泥炭与铜络合的影响。络合程度随pH值增加和离子强度降低而增加,并且随有机物与铜的比值增加而增加,和非均相络合物一样。钙与铜争夺有机质,但磷酸盐的影响可忽略不计。在pH=7时,用取自同一萃取物的等重量的胶体物质和可渗析物质络合铜的程度通常相似。以络合碳和有机碳重量比表示,被碱萃取的腐植有机物络合铜要比相应的水可溶物完全得多。
The effects of pH, ionic strength, and organics, copper, calcium and phosphate concentrations on the complexation of labile organic matter-extracted soil with peat and copper were measured. The degree of complexation increases with increasing pH and decreasing ionic strength, and increases with the organic-to-copper ratio, as is the heterogeneous complex. Calcium and copper compete for organic matter, but the impact of phosphate is negligible. At pH = 7, the degree of copper complexation with an equal weight of colloidal and dialyzing material taken from the same extract is generally similar. According to the weight ratio of complex carbon and organic carbon, humic organic complexed copper extracted by alkali is much more complete than the corresponding water-soluble.