摘要
醋酸酯淀粉样品经微波消解后,采用电感耦合等离子体发射光谱（ICP-OES）法测定其中钾、钙、钠、镁、铜、铁、锌、锰、磷、镍等10种元素含量.方法线性范围宽,线性相关系数r大于0.999 4,回收率为90.0%~106.7%,RSD小于3.9%.方法具有操作简单、快速、准确、可靠等优点,在醋酸酯淀粉分析中,取得了令人满意的结果.检测结果表明：醋酸酯淀粉中含有丰富的钙元素,磷、钾、钠元素含量较丰富,含有微量的镁、铜、铁、锰、镍等元素.
The contents of ten mineral elements（ K,Ca,Na,Mg,Cu,Fe,Zn,Mn,P,Ni） in starch acetate were determined by inductively coupled plasma- optical emission spectrometry（ ICP- OES）. The samples were pretreated by microwave digestion. The results showed that the linear range of the method was wide. The linear correlation coefficient（ r） was more than 0. 999 4. The recovery was between 90. 0% and 106. 7%,and the relative standard deviation（ RSD） was lower than3. 9%. The method is proved to be simple,fast,sensitive,and accurate in the analysis of starch acetate samples with satisfactory results. It was indicated that Ca had the highest content among all the measured elements. The contents of P,K,and Na were relatively abundant,and in the starch acetate samples there were,also trace amounts of Mg,Cu,Fe,Mn and Ni.
出处
《分析测试技术与仪器》
CAS
2016年第2期96-101,共6页
Analysis and Testing Technology and Instruments
基金
广西科技计划项目(桂科攻14122006-3)
