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Macherey-Nagel CHROMABOND QuEChERS Mix I Citrate 730970
PART NO: 4AJ-4003824
Price: €125.71
Out of Stock (Ships in approx. 1 week)
CHROMABOND QuEChERS Mix I Citrate-Extraction-Mix consisting of:
-4 g MgSO4
-1 g NaCl
-0.5 g Na2H Citrate * 1.5 H2O
-1 g Na3-Citrate * 2 H2O
CHROMABOND® QuEChERS extraction buffer mixes / clean-up mixes
QuEChERS method and pre-mix
-4 g MgSO4
-1 g NaCl
-0.5 g Na2H Citrate * 1.5 H2O
-1 g Na3-Citrate * 2 H2O
CHROMABOND® QuEChERS extraction buffer mixes / clean-up mixes
QuEChERS method and pre-mix
| CHROMABOND® QuEChERS extraction buffer mixes / clean-up mixes QuEChERS method and pre-mixes Within a few years after its devleopment by Anastassiades et al. the QuEChERS method has gained a leading position for determination of pesticide residues in food by GC-MS or LC-MS allowing rapid and cheap clean-up of strong matrix-contaminated samples. Standard clean-up of food samples 10 g sample are homogenised with 10 ml acetonitrile. After adding the internal standard the sample is shaken with 4 g MgSO4 and 1 g NaCI and afterwards centrifuged. 1 ml of the supernantant is spiked with 25 mg CHROMABOND® Diamino and 150 mg MgSO4 and shaken again. After centrifugation the supernatant is injected into the GC/MS. For optimising the extraction of pH-dependent compounds, for minimising decomposition of sensitive substances and for broadending the matrix spectrum, different modifications of the QuEChERS method have been elaborated. Extraction mixtures for sample preparation for determination of pesticides in food samples. MACHEREY-NAGEL offers a number of individually weighed and pre-mixed buffers and extraction mixtures, specially composed for different sample matrices. Mix I and Mix II are extraction mixtures, Mix III to Mix VI are clean-up mixtures. The food samples will be extracted with either Mix I or Mix II. Afterwards they will be purified with one of the following mixtures: -Mix III (samples with low fat content; e.g. apples, strawberries), -Mix IV (moderate content of chlorophyll and carotinoids; e. g. carrots, lettuce), -Mix V (high content of chlorophyll and carotinoids; e. g. bell peppers, spinach), -Mix VI (high fat content; e. g. avocados). Every mix is prepacked in a 15 ml centrifuge tube. Pack of 50 pieces. Product Specification: Capacity: 15 ml Description: Mix I Citrat-Extraction-Mix Composition 4g MgSO4, 1g NaCl, 0.5g Na2H citrate; 1.5 H2O, 1g Na4 citrate; 2 H2O | |
| Catalogue Number | 4.003 824 |
| Manufacturer | Macherey-Nagel |
| Manufacturer P/n | 730970 |
| PK | 50 |
| Description | Mix I Citrat-Extraction-Mix |
| Composition | 4g MgSO4, 1g NaCl, 0.5g Na2H citrate 1.5 H2O, 1g Na3 citrate, 2 H2O |
| Volume ml | 15 |