摘要
探讨邻二氮菲分光光度法测定山药中微量元素铁含量的可行性，阐述了山药的药理功效，食用营养价值与微量元素含量可能存在的关系；根据铁离子与特定显色剂显色，产生可见吸收，采用混合酸VHNO3：VHCIO4=4：1对山药样品湿法消化处理，在pH2～9的溶液中试剂与铁生成稳定的澄色络合物，并用分光光法测定山药中微量元素铁含量．结果表明，所选的山药中铁含量11．56～13．66mg／kg，平均加标回收率为103．5％，分光光度法操作简便、干扰离子少、测量快速、结果准确度和灵敏度高，易推广和普及使用．
In order to investigate the o - determination of the philippines yam iron content of trace elements in the feasibility. The relations, which may exist in the pharmacological effects, nutritional value of food and trace elements are elaborated. According to iron with a specific color of color, have a visible absorption, a mixed acid VHNO3：VHCIO4 = 4：1 yam samples of wet digestion with PH 2 -9 in the solution of reagents and iron generate stable Weicheng Color complex, and with sub - yam photoelectron Determination of trace el- ements in iron content. The results show that the choice of yam in the iron content 11.56 ～13.66 mg/kg, average recovery to 103.5 percent. The use of spectrophotometry is simple, low - interference, measuring rap- id, accurate and high sensitivity, easy to promote and popularize.
出处
《河南理工大学学报（自然科学版）》
CAS
2008年第5期608-610,共3页
Journal of Henan Polytechnic University（Natural Science）
基金
中国博士后科学基金资助项目(2005038468)
关键词
山药
邻二氮菲
铁
分光光度计
yam
phenan throline
ferrous
speetrophotometry
