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本文提出用离子选择性电极Rittner和Ma法代替火焰光度法测定地下水中Na~+。该法的优点是与电极的斜率无关,准确快速。测标准Na~+溶液相对误差为0.2％,相对标准偏差为7.1‰;测水样相对标准偏差为22.6‰。优于火焰光度法和其它离子电极方法。
In this paper, the ion selective electrode Rittner and Ma method instead of flame photometric determination of groundwater Na ~ +. The advantage of this method is that it has nothing to do with the slope of the electrode, accurate and fast. The relative standard deviation of the standard Na ~ + solution was 0.2% and the relative standard deviation was 7.1 ‰. The relative standard deviation of the measured water sample was 22.6 ‰. Superior to flame photometry and other ion-electrode methods.