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55227-U

Supelco

Supel QuE QuEChERS tube

Citrate Extraction Tube, pk of 50, suitable for EN 15662

同義詞:

QuEChERS

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About This Item

分類程式碼代碼:
41115712
NACRES:
NB.21

product name

Supel QuE, Citrate Extraction Tube, pk of 50, suitable for EN 15662

材料

polypropylene tube

品質等級

agency

suitable for EN 15662

產品線

Supel

成份

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)

包裝

pk of 50

技術

QuEChERS: suitable

離心管體積

15 mL

應用

food and beverages

分離技術

ion exchange

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一般說明

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。

應用

Supel QuE柠檬酸盐小柱用于通过各种分析技术测定蔬菜上的农残。

適合性

适用于提取约10 g食品/农业样品。 柠檬酸盐用于缓冲萃取至pH 5.0-5.5。 在该pH下,大多数酸碱不稳定农药可保持稳定。

法律資訊

Supel is a trademark of Sigma-Aldrich Co. LLC

儲存類別代碼

13 - Non Combustible Solids

水污染物質分類(WGK)

WGK 1

閃點(°F)

Not applicable

閃點(°C)

Not applicable


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文章

Compared to conventional PSA/C18/GCB cleanup, cannabis extracts cleaned with the Supel QuE Verde mixture showed lower GC/MS background, and better recoveries for many pesticides.

The comparison of Supel™ QuE Z-Sep/C18, PSA/C18, and PSA QuEChERS sorbents, in terms of color removal and analyte recovery, is described for the cleanup of oranges prior to pesticide analysis.

Compared to conventional PSA/C18/GCB cleanup, cannabis extracts cleaned with the Supel QuE Verde mixture showed lower GC/MS background, and better recoveries for many pesticides.

Pistachios contain approximately 45% fat, which can result in a significant amount of coextracted matrix in the acetonitrile extract generated using the QuEChERS procedure. A zirconia based adsorbent significantly reduces coextracted matrix prior to LC-MS or GC-MS.

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A highly selective and sensitive analytical method was developed for chloramphenicol using a QuEChERS type sample preparation approach and LC-MS/MS detection.

相關內容

Pesticide residue testing of turmeric and other (dried) spices is challenging due to their complex compositions and high matrix. An efficient SPE clean-up can be achieved by a new Dual-layer cartridge.

Chromatograms

application for HPLCapplication for HPLC, application for SPE

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