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一般描述
分散SPE法，通常也是指"QuEChERS” 方法（快速，简便，便宜，有效，耐用和安全），是一种现代样本准备技术，正在越来越多地被用在食品和农业产品多残基杀虫剂分析领域。
使用QuEChERS方法，食品/农产品样本首先在水溶性溶剂（比如乙腈），在高盐（比如氯化钠和硫酸镁）和或者缓冲试剂（比如柠檬酸盐）存在下，进行提取。高盐能够引起液相分离，而缓冲试剂能够稳定酸碱不稳定杀虫剂。 在摇晃和离心之后，有机相部分就进一步用SPE清洁。 和传统的SPE管方法不同，在分散SPE中，清洁需要混合大量的SPE（比如Supelclean PSA, ENVI-Carb， 和或者Discovery DSC-18）和提取物。 在样本清洁后，混合物经过离心，得到的上清可以直接分析，或者在分析前需要很少的处理。
Supelco有一系列的管和离心管，含有预置量的盐和SPE吸附剂，能够支持现今最常用的方法。
使用QuEChERS方法，食品/农产品样本首先在水溶性溶剂（比如乙腈），在高盐（比如氯化钠和硫酸镁）和或者缓冲试剂（比如柠檬酸盐）存在下，进行提取。高盐能够引起液相分离，而缓冲试剂能够稳定酸碱不稳定杀虫剂。 在摇晃和离心之后，有机相部分就进一步用SPE清洁。 和传统的SPE管方法不同，在分散SPE中，清洁需要混合大量的SPE（比如Supelclean PSA, ENVI-Carb， 和或者Discovery DSC-18）和提取物。 在样本清洁后，混合物经过离心，得到的上清可以直接分析，或者在分析前需要很少的处理。
Supelco有一系列的管和离心管，含有预置量的盐和SPE吸附剂，能够支持现今最常用的方法。
其他说明
Supel™ QuE Z-Sep products enhance sample cleanup for complex matrices by effectively removing more fat and color from sample extracts than traditional phases for QuEChERS methods. By eliminating problematic matrix interferences, Z-Sep products provide more robust LC-MS and GC-MS methods. This proprietary technology can replace C18 and PSA in your current methods without additional method development.
Z-Sep+ is recommended for cleanup of samples containing greater than 15% fat.
Z-Sep/C18 is recommended for cleanup of samples containing less than 15% fat.
Z-Sep is recommended for cleanup of samples prior to analysis of hydrophobic analytes.
Z-Sep+ is recommended for cleanup of samples containing greater than 15% fat.
Z-Sep/C18 is recommended for cleanup of samples containing less than 15% fat.
Z-Sep is recommended for cleanup of samples prior to analysis of hydrophobic analytes.
法律信息
Certain uses of this product may be covered by the claims of one or more pending patent applications. For licensing inquiries please contact [email protected]
AOAC is a registered trademark of AOAC International
Supel is a trademark of Sigma-Aldrich Co. LLC
储存分类代码
11 - Combustible Solids
WGK
nwg
闪点(°F)
Not applicable
闪点(°C)
Not applicable
其他客户在看
An overview of analytical methods and occurrence of benzotriazoles, benzothiazoles and benzenesulfonamides in the environment
Herrero, P., et al.
TrAC, Trends in Analytical Chemistry, 62, 46-55 (2014)
Anna Laura Capriotti et al.
Journal of chromatography. A, 1343, 69-78 (2014-04-22)
A sensitive, simple and rapid method for the simultaneous determination of 19 mycotoxins in biscuits (a dry matrix containing cereals and egg) has been developed using high performance liquid chromatography coupled to tandem mass spectrometry with electrospray source working in
Determination of toxic substances, pesticides and mycotoxins, in ginkgo biloba nutraceutical products by liquid chromatography Orbitrap-mass spectrometry
Martinez-Dominguez, G., et al.
Microchemical Journal, Devoted to the Application of Microtechniques in All Branches of Science, 118, 124-130 (2015)
Łukasz Rajski et al.
Journal of chromatography. A, 1304, 109-120 (2013-07-23)
Several extraction methods were evaluated in terms of recoveries and extraction precision for 113 pesticides in avocado: QuEChERS with various d-SPE clean-ups (Z-Sep, Z-Sep+, PSA+C18 and silica), miniLuke and ethyl acetate. Extracts were analysed using liquid chromatography coupled with triple
Pol Herrero et al.
Journal of chromatography. A, 1339, 34-41 (2014-03-25)
A Quick, Easy, Cheap, Effective, Rugged and Safe (QuEChERS) extraction method followed by liquid chromatography-(Orbitrap) high resolution mass spectrometry was developed for the simultaneous determination of five benzotriazole, four benzothiazole and five benzenesulfonamide derivates in sewage sludge. While the method
商品
Use QuEChERS methods to analyze samples of milk for veterinary drugs.
Pistachios 45% fat complicates pesticide analysis. But Z-Sep+ sorbent cleanup after QuEChERS extraction can reduce background for reliable results.
Assessment of clean-up sorbents for extracting PAHs from salmon and PCBs from milk, optimized for GC analysis with MS and ECD detection.
实验方案
A short abstract on a method using QuEChERS and GC/MS/MS for determination of fipronil & fipronil sulfone.
相关内容
Z-Sep sorbents improve fat and pigment extraction in QuEChERs solid phase extraction for sample preparation.
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