【摘要】 本文采用氧化水解制样及流动注射在线萃取火焰原子吸收光谱法，测定明胶中微量Ｆｅ和Ｃｕ，解决了水解法制样测定结果偏低和不能直接测定低含量样品的问题。本方法测定Ｆｅ和Ｃｕ的灵敏度分别提高了１４．５倍和１７．６倍，分析速度达３６次／ｈ，Ｆｅ和Ｃｕ的回收率分别在９０．８－１１０．５％和８７．５～１０７．０％之间，测定精密度分别为４．５３％和４．２６％。更多还原

【Abstract】 By oxidizing and hydrolyzing gelatin, trace amounts of iron and copper in gelatin were determined by FAAS with flow injection analysis technology of on-line extraction. Comparing with the hydrolyed gelatin method, our methed can not only gain better accuracy but also directly determine the low iron and copper content in gelatin.The sensitivity of determination increases 14. 5 times for Fe and 17. 6 for Cu,the recovery range is from 90. 8% to 110. 5% for Fe and 87. 5% to 107. 0% for Cu, and R. S. D.is better than 4. 53% for Fe and 4. 26% for Cu respectively. The sampling frequancy can achieve 36N/h..更多还原