摘要
研究发现在磷酸介质中，盐酸羟胺对溴酸钾氧化溴甲酚紫具有明显的催化作用，建立了一种测定痕量盐酸羟胺的新方法．其测定范围为００４～０５６μｇ／ｍｌ盐酸羟胺，检测限为００２μｇ／ｍｌ，用于化学试剂中盐酸羟胺的测定。
A new catalytickinetic photometric method for the
determination of trace hydroxylamine hydrochloride was established.The method wa
s based on trace hydroxylamine hydrochloride catalyzing the oxidation of bromocr
esol purple by potassium bromate in phosphoric acid medium.The calibration curve
was linear from 0.04～0.56μg/ml and the limit of detection limit was 0.02μg/m
l.It has been applied to the determination of trace hydroxylamine hydrochloride
in chemistry reagent with satisfactory results.
关键词
催化光度法
盐酸羟胺
溴甲酚紫
催化动力学
测定
kinetic spectrophotometry
hydroxylamine hydrochloride
bromocresol purple
