用联吡啶分光光度法测定蒙药珍宝丸中铁含量  

DETERMINATION OF IRON CONTENT IN ZHENBAOWAN,ONE OF MONGOLIAN DRUGS,BY SPECTROPHOTOMETRIC METHOD

作　　者：杨威[1] 莎木嘎[1] 杨秋林[1] 刘佳明[1] 赵智宏[1] 

机构地区：[1]内蒙古农业大学理学院无机及分析化学教研室,呼和浩特010018

出　　处：《内蒙古农业大学学报（自然科学版）》2011年第2期259-262,共4页Journal of Inner Mongolia Agricultural University(Natural Science Edition)

基　　金：国家自然科学基金(21064004);内蒙古自然科学基金(2010BS1201(2010-2012))

摘　　要：珍宝丸通过浓硝酸和高氯酸的混合消化处理后,加入盐酸羟胺将其中的铁(Ⅲ)还原成铁(Ⅱ),在pH为5的条件下,用联吡啶分光光度法测定铁含量,校准曲线回归方程为:y=0.163x-0.0014(R=0.9999)。该方法的加标回收率在98.4%～101.6%之间,相对标准偏差为0.29%,珍宝丸中铁含量为1225.70μg.g-1,用该方法测蒙药珍宝丸中铁含量具有操作简单、重现性好的特点。Zhenbaowan,one of Mongolian drugs,was digested with concentrated nitric acid and perchloric acid.Fe（Ⅲ） was reduced to Fe（Ⅱ） by hydroxylammonium chloride at pH 5.0,and the iron content was 1225.70μg.g-1 determined by the spectrophotometric method.The regression equation of calibration curve is y= 0.163x-0.0014,and its correlation coefficient R =0.9999.The results using internal standard method showed that the recovery of iron was high.（98.4%-101.6%）.The proposed method was simple and successfully applied to the determination of trace iron in Zhen baowan.

关 键 词：珍宝丸(额日敦-乌日勒) 分光光度法 微量铁 

分 类 号：O657.3[理学—分析化学] R284[理学—化学]