MPT-AES法测定黄瓜籽油中的Cu和Fe  

Determination of Cu(Ⅱ) and Fe(Ⅱ) in Cucumber-Seed Oils by MPT-AES

作　　者：王永艳[1] 李丽华[1] 张金生[1] 李玲[1] 

机构地区：[1]辽宁石油化工大学化学与材料科学学院,辽宁抚顺113001

出　　处：《辽宁石油化工大学学报》2009年第3期12-14,共3页Journal of Liaoning Petrochemical University

摘　　要：以微波等离子体(MPT)为激发光源,氩气为等离子体工作气体,用气动雾化进样,研究了微波等离子体炬原子发射光谱法(MPT-AES)测定黄瓜籽油中铜和铁的含量的方法。考察了微波前向功率、载气流量、工作气流量、硝酸和高氯酸的浓度等实验参数对测定的影响,同时考察了共存元素对Cu、Fe发射强度的影响。测定Cu、Fe质量浓度的检出限分别为5.3、22.1μg/L,RSD(n=6)<5%,并且测得它们的回收率分别为97.4%和102.8%,并通过加标回收实验验证了方法的准确性。结果表明,MPT—AES测定黄瓜籽油中的Cu、Fe操作简便,自动化程度高,运转费用低,准确快速,是一种行之有效的分析方法。The analytical methods, using microwave plasma torch as excitation light source, argon as supporting gas and peneumatic nebulization sampling system, for Cu and Fe metal elements in cucumber-seed oils by Microwave plasma torch atomic emission spectrometry （MPT- AES） was studied. The detection experimental parameters, including microwave forward power, flow rate of carrier gas and support gas, acid concentration of HNO3 and HClO4 on the detections were investigated, and coexistent ions to the emission strength of metal elements of Cu, Fe were optimized. The detection limits of mass concentration of Cu, Fe were 5.3 and 22.1 ug / L, RSD （n=6） 〈5%, and measured their recovery rates were 97.4% and 102.8%, and the accuracy of the method was identified by standard addition recovery. The results show that, the Cu, Fe of cucumber-seed oil of MPT-AES determination is simple, high degree of automation, low running costs, quickly and accurately. Therefore it is a well-established analytical method.

关 键 词：原子发射光谱法 黄瓜籽油 铜 铁 

分 类 号：O657.32[理学—分析化学]