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目的建立生活饮用水中亚氯酸盐的快速检测方法。方法利用N,N-二乙基对苯二胺(DPD)分光光度法原理,采用自主研制的余氯、二氧化氯五参数快速检测仪对饮用水中亚氯酸盐进行测定,将国家标准检验方法中的离子色谱法与快速检测方法的测定结果进行对比分析。结果在低(0.10 mg/L)、中(0.60 mg/L)、高(1.80 mg/L)3种不同浓度下,快速检测方法的相对标准偏差(RSD)为1.88%~8.94%,加标回收率为83.3%~108.0%,水样测定结果与国家标准检验方法检测结果差异无统计学意义(P>0.05)。结论快速检测方法将所需试剂集成为试剂盒,大大节省了试剂用量,降低了实验分析成本,与国家标准检验方法相比,简化了分析过程,产生的废水废液少。快速检测仪操作简单快速,携带方便,适合用于生活饮用水中亚氯酸盐的测定。
Objective To establish a rapid detection method of chlorite in drinking water. Methods Chlorpyrifos in drinking water was determined by the method of N, N-diethyl-p-phenylenediamine (DPD) spectrophotometry and the self-developed residual chlorine and chlorine dioxide five-parameter rapid detector. The national standard Comparison between ion chromatography in the test method and the test result of the rapid test method. Results The relative standard deviations (RSDs) of the rapid detection methods were 1.88% ~ 8.94% at three different concentrations of (0.10 mg / L), medium (0.60 mg / L) and high (1.80 mg / L) The recoveries ranged from 83.3% to 108.0%. There was no significant difference between the water sample results and the national standard test results (P> 0.05). Conclusion The rapid detection method integrates the required reagent into the kit, which greatly saves the reagent dosage and reduces the cost of the experimental analysis. Compared with the national standard test method, the analysis process is simplified, and less wastewater and waste is generated. Fast detector is simple and fast operation, easy to carry, suitable for determination of chlorite in domestic drinking water.