对流动注射法测定地表水中高锰酸盐指数进行了深入研究,优化了仪器的最佳工作参数。其测定结果表明,该方法在标准溶液质量浓度为0~10.8 mg/L时工作曲线具有良好的线性,最低检测限为0.0748 mg/L,相对标准偏差为0.59%~4.70%,加入标准物质回收率为98.5%~101%。该方法与酸性高锰酸钾法进行比对,其测定结果准确、可靠,无显著性差异。
This paper studied a method that determines permanganate index in the surface water using flow injec-tion analysis(FIA),and optimized the optimal working conditions of facilities .Determination results show that the line-arity range for the determination of mercury was found to be 0-10.8 mg/L.The lower detection limit was found to be 0.0748 mg/L,RSD obtained was 0.59 %-4.70 %and with addition of standard substance the recovery was in the range of 98.5-101 %.Compared to acidic permanganate ,the test results are precise and reliable,having no obvious inconsistency.
参考文献
[1] | 陆野,王忠喜,黄振荣.流动注射法测定水中高锰酸盐指数的研究[J].环境科学与管理,2009(12):102-105. |
[2] | 国家环境保护总局<水和废水监测分析方法>编委会.水和废水监测分析方法(第四版)[M].北京:中国环境科学出版社,2002 |
[3] | GB 11892-1989.水质高锰酸盐指数的测定[S].,1989. |
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