云南化工Issue(5)：32-35,4.DOI:10.3969/j.issn.1004-275X.2015.05.007
火焰原子吸收法测定磷矿石、磷酸中铬
Flame Atomic Absorption Spectrometry for Determination of Chromium in Phosphorus and Phosphoric Acid
熊晓红1
作者信息
- 1. 云南三环化工有限公司，昆明 650113
- 折叠
摘要
Abstract
The method for determination of chromium in phosphate ore and phosphoric acid by flame atomic absorption spectrometry was studied.Phosphate rock sample was dissolved in Lye nitrate solution,a certain amount of KCl solution was added to the test solution of phosphate rock and phosphoric acid with hy-drochloric acid and nitric acid as the medium respectively,the samples’absorbance values were measured at a wavelength of 357.9nm,and the chromium content was obtained by the standard addition curve.The phos-phate rock and phosphoric acid samples spiked recoveries of this method are between 96.2 ~104.6%,and 97.4 ~105.9% respectively,the relative standard deviation of phosphate rock and phosphate samples were 1.97 -3.16% and 3.86% -5.28%,this method is of high precision and accuracy.关键词
火焰原子吸收法/磷矿石/磷酸/铬Key words
flame atomic absorption spectrometry/phosphate rock/phosphate/chromium分类
化学化工引用本文复制引用
熊晓红..火焰原子吸收法测定磷矿石、磷酸中铬[J].云南化工,2015,(5):32-35,4.
