基于低共熔溶剂的液液微萃取—石墨炉原子吸收光谱法测定牛奶中的镉
目的:加强牛奶中镉含量的监测.方法:建立一种以疏水性低共熔溶剂为萃取剂的液液微萃取方法,结合石墨炉原子吸收分光光度计进行定量测定.通过对不同种类低共熔溶剂(EDS)进行筛选,发现百里香酚和乳酸在摩尔比为1:1时形成的疏水性低共熔溶剂萃取回收率最高,同时对低共熔溶剂(DES)的用量、待测液pH值、样品前处理方式等条件进行优化.结果:在最佳试验条件下,镉在0～3.0 ng/mL的质量浓度范围内线性良好,相关系数为0.998,方法检出限为0.02 μg/kg;加标回收率为94.7％～113.0％,相对标准偏差(RSD)为0.38％～7.00％.结论:以疏水性低共熔溶剂为萃取剂的液液微萃取方法简单快速...
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| Published in | 食品与机械 Vol. 39; no. 7; pp. 68 - 151 |
|---|---|
| Main Authors | , , , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
重庆食品工业研究所有限公司,重庆 400042
01.07.2023
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1003-5788 |
| DOI | 10.13652/j.spjx.1003.5788.2022.80933 |
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| Abstract | 目的:加强牛奶中镉含量的监测.方法:建立一种以疏水性低共熔溶剂为萃取剂的液液微萃取方法,结合石墨炉原子吸收分光光度计进行定量测定.通过对不同种类低共熔溶剂(EDS)进行筛选,发现百里香酚和乳酸在摩尔比为1:1时形成的疏水性低共熔溶剂萃取回收率最高,同时对低共熔溶剂(DES)的用量、待测液pH值、样品前处理方式等条件进行优化.结果:在最佳试验条件下,镉在0～3.0 ng/mL的质量浓度范围内线性良好,相关系数为0.998,方法检出限为0.02 μg/kg;加标回收率为94.7％～113.0％,相对标准偏差(RSD)为0.38％～7.00％.结论:以疏水性低共熔溶剂为萃取剂的液液微萃取方法简单快速、检出限低、结果准确,适用于牛奶中镉的测定. |
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| AbstractList | 目的:加强牛奶中镉含量的监测.方法:建立一种以疏水性低共熔溶剂为萃取剂的液液微萃取方法,结合石墨炉原子吸收分光光度计进行定量测定.通过对不同种类低共熔溶剂(EDS)进行筛选,发现百里香酚和乳酸在摩尔比为1:1时形成的疏水性低共熔溶剂萃取回收率最高,同时对低共熔溶剂(DES)的用量、待测液pH值、样品前处理方式等条件进行优化.结果:在最佳试验条件下,镉在0～3.0 ng/mL的质量浓度范围内线性良好,相关系数为0.998,方法检出限为0.02 μg/kg;加标回收率为94.7％～113.0％,相对标准偏差(RSD)为0.38％～7.00％.结论:以疏水性低共熔溶剂为萃取剂的液液微萃取方法简单快速、检出限低、结果准确,适用于牛奶中镉的测定. |
| Author | 李智 潘新亮 曹钧 王素利 丁伟 石庆东 |
| AuthorAffiliation | 重庆食品工业研究所有限公司,重庆 400042 |
| AuthorAffiliation_xml | – name: 重庆食品工业研究所有限公司,重庆 400042 |
| Author_FL | DING Wei CAO Jun LI Zhi WANG Su-li SHI Qing-dong PAN Xin-liang |
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| Author_xml | – sequence: 1 fullname: 王素利 – sequence: 2 fullname: 曹钧 – sequence: 3 fullname: 丁伟 – sequence: 4 fullname: 潘新亮 – sequence: 5 fullname: 石庆东 – sequence: 6 fullname: 李智 |
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| Keywords | 液液微萃取 石墨炉原子吸收光谱法 疏水性低共熔溶剂 graphite furnace atomic absorption spectrometry 牛奶 hydrophobic deep eutectic solvent milk 镉 cadmium liquid-liquid microextraction |
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| Title | 基于低共熔溶剂的液液微萃取—石墨炉原子吸收光谱法测定牛奶中的镉 |
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