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溴代十六烷基吡啶(简称CPB)—苯基萤光酮三元络合物测定钢铁中的微量锡,早有报道、资料于0.75N的盐酸介质中显色,我们在此基础上,进一步试验了介质和试剂用量。发现在硫酸或硝酸介质中,动物胶存在的情况下,CPB、动物胶以及显色剂苯基萤光酮等的用量,与资料相符,而介质和酸度与资料有些差异。当硫酸或硝酸为0.08～0.56N较宽的范围内。以乳酸、抗坏血酸、柠檬酸,硫酸羟胺掩蔽铁、钛、钒、钼等干扰元素,可直接测定钢铁中的微量锡。方法简单而又稳定,用于生产后,取得了较好的效果。
Brominated cetylpyridine (referred to as CPB) - phenyl-fluorone ternary complex determination of trace tin in steel, it has been reported that the material in 0.75N hydrochloric acid medium color, on this basis, Further test the media and reagent dosage. Found in the sulfuric acid or nitric acid medium, the presence of animal glue, CPB, animal glue and developer phenylfluorone and so on, in line with the data, and medium and acidity and the data are somewhat different. When the sulfuric acid or nitric acid is 0.08 ~ 0.56N wide range. With lactic acid, ascorbic acid, citric acid, hydroxylamine sulfate masking iron, titanium, vanadium, molybdenum and other interference elements can be directly measured in the trace of tin in steel. The method is simple and stable, used in production, and achieved good results.