发布时间 : 星期二 文章ContrAA700石墨炉原子吸收光谱法测定水中微量铁更新完毕开始阅读
ContrAA700石墨炉原子吸收光谱法测定水中微量铁
摘要:建立石墨炉原子吸收光谱法测定水中微量铁的分析方法。用硝酸镁作基体改进剂,选择合适的灰化温度和原
子化温度,消除复杂组分的干扰,石墨炉原子吸收光谱法测定水中的微量铁。该方法的检出限为0.5 ug/l,标准曲线的相关系数r=0.999 8,加标回收率为92.0%~105%,精密度4.9%。方法快速、简便、准确,适用于水中微量铁的测定。 关键词:石墨炉原子吸收法;水样;铁
abstract: establish graphite furnace atomic absorption spectrometry analysis methods of trace iron in water. as with nitric acid magnesium matrix modifier, choose appropriate ashing temperature and atomic transition temperature, eliminate complicated components of interference, graphite furnace atomic absorption spectrometry microelement iron in water. the method of detection limit for 0.5 ug/l, standard curve of the correlation coefficient r = 0.999 8, the labeled recovery is 92.0% ~ 105%, the precision of 4.9%. method is rapid, simple and accurate, and is suitable for the trace of determination of iron in water.
keywords: graphite furnace atomic absorption method; water; iron