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本文介绍一种流动注射浊度测定SO_4~(2-)的方法。测定范围为10ppm~180ppm;检出限为2ppm;SO_4~(2-)含量为120ppm时的相对误差小于1.0%;进样频率为90 h~(-1)。对天然水样分析,得到的结果与标准方法一致。
This paper presents a method for the determination of SO_4 ~ (2-) by flow injection nephelometry. The detection limit is 10ppm ~ 180ppm; the detection limit is 2ppm; the relative error of SO_4 ~ (2-) content of 120ppm is less than 1.0%; the sampling frequency is 90h ~ (-1). For natural water samples, the results are consistent with standard methods.