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水体中的总硬度是指钙和镁的总浓度。通常情况下,测定水体中的总硬度采用经典的 EDTA 络合滴定法。本文采用原子吸收分光光度法测定黄河水体中的总硬度,测定结果与传统方法相比,没有显著性差异。将两种方法的测定数据进行 t 检验,未出现显著性差异,证明该两种方法都具有较好的准确度,均为测定总硬度的可靠方法。
The total hardness in water refers to the total concentration of calcium and magnesium. Under normal circumstances, the determination of the total hardness of water using the classic EDTA complexometric titration. In this paper, atomic absorption spectrophotometry for the determination of the total hardness of the Yellow River water, the measured results compared with the traditional method, no significant difference. There was no significant difference between the two methods, which showed that both methods had good accuracy and were reliable methods for determining the total hardness.