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锅炉给水新型除氧剂异抗坏血酸(或其盐)作为可疑致癌物联氨的代用品,由于其完全无毒及除氧速率快、防腐效果好、倍受国内外锅炉水处理工作者青睐。测定炉前给水中异抗坏血酸剩余量是工业控制的关键。检测微量异抗坏血酸的方法有溴酸钾滴定法、碘离子电极法,及铂、银伽代尼传感器分析法等。还有高效液相色谱紫外光(254nm)检测法等。这些方法不便于我国发电厂现场例行分析。为此,笔者研究了1,10-二氮杂菲(phen)吸光光度法,该法基本原理如下: Fe~(3+)离子在微酸性至微碱性介质中氧化异抗坏血
As a substitute for suspected carcinogen hydrazine, erythorbic acid (or its salt) as a new oxygen scavenger in boiler feed water is favored by domestic and foreign boiler water treatment workers due to its completely non-toxic and fast oxygen scavenging effect and good anticorrosive effect. Measuring the amount of isoascorbate remaining in the feed water before the furnace is the key to industrial control. Detection of trace amounts of isoascorbic acid methods are potassium bromate titration, iodine ion electrode method, and platinum, silver Gardiner sensor analysis. There are high-performance liquid chromatography UV (254nm) detection method. These methods are not convenient for routine analysis of power plant site in China. To this end, I studied 1,10-phenanthroline (phen) absorption spectrophotometry, the basic principle of the method is as follows: Fe ~ (3 +) ions in a slightly acidic to slightly alkaline oxidized isoascorbic acid