中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 基于ASE提取IC-ICP-MS联用测定茶叶中Cr(Ⅲ)和Cr(Ⅵ)的研究 湖北农业科学 2017 (11) 2120-2123+2127
Position: Home > Articles > Determination of Cr(Ⅲ) and Cr(Ⅵ) in Tea by IC-ICP-MS based on ASE Extraction Hubei Agricultural Sciences 2017 (11) 2120-2123+2127

基于ASE提取IC-ICP-MS联用测定茶叶中Cr(Ⅲ)和Cr(Ⅵ)的研究

作  者：
章剑扬;王国庆;马桂岑;张琳;陈利燕;刘新;鲁成银
单  位：
中国农业科学院研究生院;中国农业科学院茶叶研究所/农业部茶叶产品质量安全风险评估实验室
关键词：
加速溶剂萃取;离子色谱;电感耦合等离子体质谱;茶叶;铬
摘  要：
采用加速溶剂萃取(ASE)-离子色谱(IC)-电感耦合等离子体质谱(ICP-MS)法测定,建立了茶叶中Cr(Ⅲ)和Cr(Ⅵ)的分析方法。样品使用0.04 mol/L EDTA二钠盐和硝酸铵溶液(p H为7.0~7.5)在80℃和1 600 psi压力下提取,C18固相萃取(SPE)净化。以0.075 mol/L的硝酸铵作为流动相,AG7色谱柱分离后用ICP-MS测定。结果表明,Cr(Ⅲ)和Cr(Ⅵ)在0~10.0μg/L线性关系良好,检出限均达到0.03μg/L。以实际茶叶样品为基体,在1.0μg/L浓度水平下,Cr(Ⅲ)和Cr(Ⅵ)的加标回收率分别为86.2%~89.2%、78.8%~79.4%,RSD<4%(n=7)。该方法具有自动化程度高和同时测定2种价态的优点,适合批量、准确测定茶叶中2种价态铬的含量。
译  名：
Determination of Cr(Ⅲ) and Cr(Ⅵ) in Tea by IC-ICP-MS based on ASE Extraction
作  者：
ZHANG Jian-yang;WANG Guo-qing;MA Gui-cen;ZHANG Lin;CHEN Li-yan;LIU Xin;LU Cheng-yin;Lab of Quality and Safety Risk Assessment for Tea Ministry of Agriculture/Tea Research Institute,Chinese Academy of Agricultural Sciences;Graduate School,Chinese Academy of Agricultural Sciences;
关键词：
accelerated solvent extraction;;ion chromatography;;inductively coupled plasma mass spectrometry;;tea;;chromium
摘  要：
A method for determination and analysis of Cr(Ⅲ) and Cr(Ⅵ) in tea was established by IC-ICP-MS). The samples were extracted with 0.04 mol/L EDTA disodium salt and ammonium nitrate solution(p H=7.0~7.5) under pressure at80 ℃ and 1 600 psi, then were purified with solid phase extraction(SPE) with C18. With 0.075 mol/L ammonium nitrate solution as mobile phase, the AG7-HC ion chromatographic column was separated and detected by ICP-MS. The results showed good linear relationships(r2=1.0) were obtained between Cr(Ⅲ) and Cr(Ⅵ) in the range of 0~10.0 mg/L and the detection limit were all 0.03 mg/L. With practical tea samples as matrix, the recoveries of Cr(Ⅲ) and Cr(Ⅵ) were in the range of 78.8%~89.2% at concentration of 1.0 μg/L, and the relative standard deviations(RSDs) were less than 4.0%(n=7).The results indicated the method had advantages of high degree automation and simultaneous determination of 2 valence states, which was suitable for the batch and accurate determination of Cr(Ⅲ) and Cr(Ⅵ) contents in tea.

相似文章

导出引用
计量
文章访问数: 10
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46