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游泳池水中的尿素,作为游泳池水体污染程度的一项重要指标,越来越受到人们的重视。目前,测定游泳池水中尿素含量的方法常采用二乙酰一肟分光光度法(简称原法)[1],该法实验条件较苛刻,显色不稳定,线性范围窄,反应时间长,并存有终体积不一致的缺憾,在实际应用中,很难获取准确结果[2～4]。本文在原法的基础上,选择异丙醇作显色稳定剂,使标准曲线的线性范围有了很大提高,缩短了煮沸时间,方法的精密度、准确度优于原法,且符合卫生检验要求。
Urea in the swimming pool water, as an important indicator of the degree of pollution of swimming pool water, has drawn more and more attention. At present, the determination of urea in swimming pool water often diacetyl-oxime spectrophotometry (the original method) [1], the method of harsh experimental conditions, color instability, narrow linear range, long reaction time, and the existence of the end Inconsistent volume of defects, in practical applications, it is difficult to obtain accurate results [2 ~ 4]. In this paper, based on the original method, the choice of isopropyl alcohol as a color stabilizer, the linear range of the standard curve has been greatly improved, shorten the boiling time, the precision of the method, accuracy is better than the original method, and in line with health inspection Claim.