产品名称
Supel™ QuE, Citrate Extraction Tube, pk of 50, suitable for EN 15662
material
polypropylene tube
agency
suitable for EN 15662
product line
Supel™
composition
magnesium sulfate, 4 g
sodium chloride, 1 g (Cat. No. S7653)
sodium citrate dibasic sesquihydrate, 0.5 g (Cat. No. 71635)
sodium citrate tribasic dihydrate, 1 g (Cat. No. S4641)
packaging
pk of 50
technique(s)
QuEChERS: suitable
centrifuge tube volume
15 mL
Quality Level
application(s)
food and beverages
separation technique
ion exchange
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Application
General description
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。
Legal Information
存储类别
13 - Non Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
商品
2-layer SPE cartridge efficiently reduces background for ginger contaminant analysis.
Pistachios 45% fat complicates pesticide analysis. But Z-Sep+ sorbent cleanup after QuEChERS extraction can reduce background for reliable results.
SPE retention mechanism in this case is based on the electrostatic attraction of charged functional groups of the analyte(s) to oppositely charged functional groups on the sorbent.
Dual-layer cartridge achieves efficient SPE clean-up for challenging pesticide residue testing in turmeric and spices.
实验方案
Normal-phase SPE separates analytes based on polar interaction with sorbents in diverse sample matrices.
相关内容
QuEChERS方法简化了食品和农业样品农残分析的样品纯化步骤。
QuEChERS is a ‘Quick, Easy, Cheap, Effective, Rugged and Safe’ sample cleanup method used to prepare food and agricultural samples for pesticides analysis. QuEChERS is based on the Solid Phase Extraction (SPE) technique of sample preparation.
固相萃取(SPE)是一种用在色谱分析（如 HPLC、GC、TLC 色谱）前快速、选择性制备和纯化样品的技术，主要用于置换样品基质、浓缩分析物、去除干扰成分和污染物，以改善数据结果、保护分析色谱柱。
我们的科学家团队拥有各种研究领域经验，包括生命科学、材料科学、化学合成、色谱、分析及许多其他领域.
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