CHROMABOND® QuEChERS extraction buffer mixes / clean-up mixes
CHF 280.10*
Content:
50
Delivery according to order confirmation
Product number:
4003824
Manufacturer:
Macherey-Nagel GmbH & Co. KG
Packaging information:
Weight:
0.825 kg
Description
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.
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:
Every mix is prepacked in a 15 ml centrifuge tube. Pack of 50 pieces.
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.
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.
| Hazardous Substance Data | |
| SDS | Link |
Properties
| Composition: | 4g MgSO4, 1g NaCl, 0.5g Na2H citrate1.5 H2O, 1g Na3 citrate, 2 H2O |
|---|---|
| Description: | Mix I Citrat-Extraction-Mix |
| Manufacturer Article Number: | 730970 |
| Volume column: | 15 ml |
Skip product gallery
Empty columns CHROMABOND®, PP
From
CHF 104.10*
CHROMAFIX® PS
From
CHF 363.10*
CHROMAFIX® C18
From
CHF 298.90*
CHROMAFIX® Dry
From
CHF 201.30*
Extraction kits Copure® QuEChERS
From
CHF 65.00*
CHROMABOND® SiOH
From
CHF 138.00*
Similar products
Empty CHROMABOND® column (PP) for SPE, one PE-filter element is already inserted in the column.
The innovative cation exchanger offers:mixed-mode SPE phase with distinct cation exchange and RP properties excellent enrichment of basic analytesmodern support polymer with optimised pore structure and large specific surfacegood reproducibility, reliable and cost-efficient analysesmore aggressive washing procedures for matrix removal possiblecleaner samples and protection of analytical HPLC and GC instrumentationquantificationof analytes from heavily contaminated sampleslower limits of detection also for critical matrices... the perfect fit for basic analytes in comination with CHROMABOND® HR-X
Octadecyl modified silica phase for SPE, not endcappedBase material silica, pore size 60 Å, particle size 45 µm for C18, specific surface 500 m²/g, pH stability 2 to 8 octadecyl phases, not endcapped, carbon content 14 % possesses more free silanols (SiOH), which allow secondary interactions with polar groups of the analytes.Recommended applications: non-polar compounds, pesticides.
Special phase for drying organic samplesBasic material: Sodium sulfate.Recommended application: removal of traces of water from organic solutions.
Extraction and clean-up mixtures for sample preparation in the pesticide analysis of vegetable foodstuffs according to EN 15662 using GC/MS or LC/MS after acetonitrile extraction and purification using the dispersive SPE-QuEChERS method.The samples are first extracted with Mix A. Purification is done with one of the following mixtures:Mix B (Clean-up mixture for fruits and vegetables with low fat content, e.g. apples, strawberries)Mix C (Clean-up mixture for fruits and vegetables with high fat content, containing oil/wax, e.g. avocados)Mix D (Clean-up mixture for moderately chlorophyll/carotenoid-containing fruits and vegetables, e.g. carrots, salad)Mix E (Clean-up mixture for fruits and vegetables with high chlorophyll/carotenoid content, e.g. sweet peppers, spinach)If required, add ceramic homogenising beads for better mixing.Mix A contains a bag with the required amount of mixture and a 50 ml empty tubeMix B, C, D and E are pre-weighed into a 15 ml tube
Unmodified silica phase for SPEUnmodified, weakly acidic silica, pore size 60Å, particle size 45µm, specific surface 500m²/g, pH stability 2 to 8, very polar, adsorbs humidity from air, for this reason it should be kept well closed and if necessary dried before use due to its high affinity for polar compounds it should not be conditioned with polar (e.g. methanol) or water-containing solvents.Recommended applications: aflatoxins, chloramphenicol, pesticides, steroids, vitamins.