Online desorption of molecularly imprinted stir bar sorptive extraction coupled to high performance liquid chromatography for the trace analysis of triazines in rice.
Online desorption of molecularly imprinted stir bar sorptive extraction coupled to high performance liquid chromatography for the trace analysis of triazines in rice.
复制标题
分子印迹搅拌棒吸附萃取在线解吸与高效液相色谱联用用于大米中三嗪的痕量分析。
DOI：
10.1002/jssc.201200548
复制
发表时间：
2012-12
影响因子：
3.1
通讯作者：
Li Gongke
中科院分区：
文献类型：
--
作者：
Zhong Qisheng;Hu Yufei;Hu Yuling;Li Gongke
基于自制的专用接口，将分子印迹搅拌棒吸附萃取与高效液相色谱联用，实现了在线解析分析。在解吸过程中，从搅拌棒解吸的分析物被输送到样品环，然后被引入液相色谱进行进一步分析。利用液相色谱系统的紫外检测器对在线解吸和导入过程进行实时监测。通过这种方式，提高了方法的灵敏度和重现性，因为准确控制了具有最大目标分析物浓度的解吸溶剂的引入时间。为了验证该方法的可行性，合成了特丁嗪印迹搅拌棒，并用于大米中九种三嗪类化合物的分析。在优化条件下，方法的检出限为0.02-0.11 μg/L，精密度为4.3-7.2%。并与超声波辅助脱附和静态热脱附两种传统离线脱附方法进行了比较。结果表明，该方法准确、精密、快速，适用于复杂样品的痕量分析。
Based on a special homemade interface, the molecularly imprinted stir bar sorptive extraction was coupled to high performance liquid chromatography for the online desorption and analysis. During desorption, the analytes desorbed from stir bar were delivered to a sample loop and then was introduced into liquid chromatography for further analysis. The online desorption and introduction processes were real-time monitored by the ultraviolet detector of the liquid chromatography system. In this way, the method sensitivity and reproducibility was improved for the introduction timing of the desorption solvent with greatest concentration of the target analytes was accurately controlled. To demonstrate the feasibility of the method, terbuthylazine imprinted stir bar was synthesized and used for the analysis of nine triazines in rice. Under the optimized conditions, limits of detection of 0.02-0.11 μg/L and precision within 4.3-7.2% were achieved. The new method was compared with other two traditional offline desorption procedures, i.e. ultrasonic-assisted desorption and static thermal desorption. The comparison results showed that the proposed method is accurate, precise, fast, and suitable for the trace analysis of complex samples.
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DOI：
10.1016/j.chroma.2006.11.073
发表时间：
2007-06
期刊：
Journal of chromatography. A
影响因子：
--
作者：
H. Lord
通讯作者：
H. Lord
DOI：
10.1016/j.jchromb.2004.11.057
发表时间：
2005-03
期刊：
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences
影响因子：
--
作者：
Thom Stroink;Mireya Castillo Ortiz;A. Bult;H. Lingeman;G. D. de Jong;W. Underberg
通讯作者：
Thom Stroink;Mireya Castillo Ortiz;A. Bult;H. Lingeman;G. D. de Jong;W. Underberg
影响因子：
3.1
作者：
Yuling Hu;Jiawei Li;Gongke Li
通讯作者：
Yuling Hu;Jiawei Li;Gongke Li
影响因子：
6.1
作者：
Zhigang Xu;Chaoyong Song;Yuling Hu;Gongke Li
通讯作者：
Zhigang Xu;Chaoyong Song;Yuling Hu;Gongke Li
DOI：
10.1039/a704729k
发表时间：
1997
期刊：
Analytical Communications
影响因子：
--
作者：
H. Daimon;J. Pawliszyn
通讯作者：
H. Daimon;J. Pawliszyn