西华大学学报（自然科学版）Issue(5)：100-103,4.DOI:10.3969/j.issn.1673-159X.2013.05.025
石墨炉原子吸收法测定液态铬元素的不同消解方法探讨
Comparative study of Pretreatment Methods for Determination of Chromium in Milk Powder by Atomic Absorption Spectrometry
摘要
Abstract
The method of Graphite furnace atomic absorption spectrophotometry was used to detest the Chromium content of liquid milk.Dry ashing and microwave digestion was discussed for these two kinds of pretreatment methods on the result of experiment .The results showed that dry digestion for samples pretreatment was more accurate , stable, reproducible than microwave digestion .Under the optimal conditions, linear calibration range was 0.002μg/mL -0.320μg/mL(r=0.9996), the relative standard deviation (RSD) of sample was 2.05%, the detection limit of instrument was 0.0031μg/mL, the detection limit of the method was 0.0027μg/mL, the re-covery of standard addition was from 96.35%to 97.21%.关键词
石墨炉原子吸收分光光度法/液态乳/铬/干法灰化/微波消解Key words
atomic absorption spectrometry/liquid milk/chromium/dry digestion/microwave digestion分类
化学化工引用本文复制引用
曾朝懿,唐洁,车振明..石墨炉原子吸收法测定液态铬元素的不同消解方法探讨[J].西华大学学报（自然科学版）,2013,(5):100-103,4.基金项目
西华大学食品生物技术省高校重点实验室项目资助 （）
