AN OPTIMAL MANUAL PROCEDURE FOR AMMONIA ANALYSIS IN NATURAL-WATERS BY THE INDOPHENOL BLUE METHOD
AN OPTIMAL MANUAL PROCEDURE FOR AMMONIA ANALYSIS IN NATURAL-WATERS BY THE INDOPHENOL BLUE METHOD
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DOI：
10.1016/0043-1354(84)90230-6
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发表时间：
1984-01-01
期刊：
影响因子：
12.8
通讯作者：
DEGOBBIS, D
中科院分区：
文献类型：
--
作者：
IVANCIC, I;DEGOBBIS, D
对靛酚蓝比色法测定天然沃茨中氨的几种方法进行了试验。Solorzano的方法，用苯酚-乙醇，硝普钠，碱性柠檬酸盐和次氯酸盐作为试剂，适合于日常工作。通过用二氯异氰尿酸钠代替次氯酸盐，在所有其他试剂之后加入催化剂，并通过增加工作pH值，获得了该程序的改进。浓缩因子在统计学上与原始程序相同，但在淡水和海水沃茨中，试剂空白较低，颜色发展较快。
Several procedures for ammonia determination in natural waters by the colorimetric indophenol blue method were tested. Solorzano''s procedure, with phenol-alcohol, nitroprusside, alkaline citrate and hypochlorite as reagents, was appropriate for routine work. An improvement of this procedure was obtained by replacing hypochlorite with sodium dichloroisocyanurate, by adding the catalyst after all other reagents and by increasing the working pH. Concentration factors were statistically the same as in the original procedure, but the reagent blanks were lower and the color developed faster, in fresh and sea waters.