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用离子色谱(以下简称IC)测定水和大气等环境样品中的阴离子已有不少报导,但用IC测定土壤样品中的阴离子到目前为止报导极少,用该法测定土壤中的磷酸根还未见报导。我们选择了六种土壤提取液,讨论了定量提取磷酸根、硝酸根和硫酸根的条件,并对测定磷酸根的淋洗液进行了较系统研究,找出在复杂的土壤提取液中离子色谱测定磷酸根的条件。鉴于在我们以前的工作中,硝酸根、硫酸根的IC法已与化学法作过对照,此文不再重复,仅就磷酸根的数据与化学法对比,并用两种淋洗液测定,结果颇为一致。
Ion chromatography (hereinafter referred to as IC) has been widely reported in the determination of anions in environmental samples such as water and air. However, the determination of anions in soil samples using ICs has been reported to date to a very small extent. Determination of phosphate No reports. We selected six soil extracts, discussed the quantitative extraction of phosphate, nitrate and sulfate conditions, and determined the phosphate eluent for a more systematic study to identify complex soil extracts by ion chromatography Determination of phosphate conditions. Given that in our previous work, the IC method of nitrate and sulfate has been compared with the chemical method, the article will not be repeated, only the data of the phosphate group is compared with that of the chemical method, and the results of the determination of the two kinds of eluents Quite consistent.