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硝基苯毒性大,并能通过人体皮肤直接进入机体内,对人的健康危害很大,是环境监测的重要指标之一。但长期以来,对硝基苯的测定找不到理想的方法,常用比色法与气相色谱法进行测定。比色法须先在酸性介质中将硝基苯还原为苯胺,利用苯胺重氮化后与盐酸萘乙胺偶合生成紫色染料(盐酸萘乙胺法)或者是将苯胺用次氯酸氧化再与酚反应生成蓝色靛酚(次氯酸钠—酚比色法),再进行比色测定。不但操作麻烦,经多步
Nitrobenzene toxicity, and through the human skin directly into the body, a great hazard to human health, is one of the important indicators of environmental monitoring. But for a long time, nitrobenzene determination can not find the ideal method, commonly used colorimetric and gas chromatography determination. Colorimetric method must first nitrobenzene in an acidic medium is reduced to aniline, after the use of aniline diazotization coupled with naphthyl ethylamine hydrochloride generated purple dye (naphthylamine ethylamine hydrochloride method) or the aniline with hypochlorous acid and then Phenol reaction of blue indophenol (sodium hypochlorite - phenol colorimetric method), and then colorimetric determination. Not only troublesome operation, after many steps