连续流动注射方法在测定大连市地表水水质中的应用
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摘要
采用Quaatro连续流动注射分析仪对大连市地表水中的氨氮、高锰酸盐指数和硫化物进行同时测定,实验结果表明:以连续流动注射方法测定地表水中氨氮、高锰酸盐指数和硫化物具有较高的精密度和准确度。经对实际水样进行方法比对实验,表明连续流动注射方法与国家标准方法无显著性差异。因此,连续流动注射方法分析速度快,自动化程度高,适用于大批样品的测定。
Quaatro continuous flow injection analyzer was used to simultaneously determine ammonia nitrogen, permanganate index and sulfide in surface water of Dalian city. The experimental results show that ammonia nitrogen, permanganate index and sulfide in surface water determined by continuous flow injection method have higher precision and accuracy. Upon the method comparison experiment on actual water samples, it is shown that there is no significant difference between the continuous flow injection method and the national standard method. Therefore, the continuous flow injection method has faster analysis speed and higher degree of automation, which is suitable for the determination of a large number of samples.
Quaatro continuous flow injection analyzer was used to simultaneously determine ammonia nitrogen, permanganate index and sulfide in surface water of Dalian city. The experimental results show that ammonia nitrogen, permanganate index and sulfide in surface water determined by continuous flow injection method have higher precision and accuracy. Upon the method comparison experiment on actual water samples, it is shown that there is no significant difference between the continuous flow injection method and the national standard method. Therefore, the continuous flow injection method has faster analysis speed and higher degree of automation, which is suitable for the determination of a large number of samples.
引文
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[3] 丁萌萌.流动注射——分光光度法测定环境水样中的高锰酸盐指数[C]//中国环境科学学会.2013中国环境科学学会学术年会论文集(第四卷).北京:中国环境学学会,2013:6.
[4] GB 11892—89水质高锰酸盐指数的测定[S].北京:中国标准出版社,1989.
[5] GB/T 5750.5—2006生活饮用水标准检验方法无机非金属指标[S].北京:中国标准出版社,2006.
[6] 李志林,吉正元,马俊,等.AA3连续流动注射分析仪在水质分析中的常见故障及日常维护[J].环境科学导刊,2016,35(6):110-112.
[7] 朱欢,张飞,季晔鑫.环境水样中高锰酸盐指数测定方法研究进展[J].环境与发展,2014,26(4):76-78.