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土壤氧化还原电位作为土壤环境条件的一个综合性指标已沿用很久,它表征土壤氧化性或还原性的相对程度。有关早期的测定方法,Starkey和Wight曾进行过评论。但用铂电极直接测定土壤氧化还原电位时存在着一系例问题。其中最为突出的是,平衡电位的建立极为缓慢,有时需经过几小时甚至一两天。这主要是由于铂电极并不是真正的惰性电极,电极表面的氧化物膜或吸附的其他物质都影响到电子
Soil redox potential as a comprehensive indicator of soil environmental conditions has been used for a long time, which characterizes the relative degree of soil oxidation or reduction. Starkey and Wight have commented on the earlier assay. However, there are some problems in direct determination of redox potential of soil with platinum electrode. The most prominent of these is that the establishment of the equilibrium potential is extremely slow, sometimes taking hours or even days or two. This is mainly due to platinum electrode is not a real inert electrode, the electrode surface of the oxide film or adsorbed other substances affect the electronic