Solid phase extraction

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facet applications:Solid phase extraction

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Showing 1-30 of 38 results

Isolation and LC-MS Characterization of Illicit Bath Salts in Urine

The combination of ion-exchange SPE with the HILIC HPLC separation provides a novel approach for the testing of problematic bath salt compounds.

The Effect of Container Materials on Production of Light Induced Milk – A Study Using SPME-GC-MS

Various plastics used as barriers to the production of off-flavors in light exposed milk were examined using HS-SPME with a new Carboxen®/PDMS coated Nitinol fiber followed by GC-MS analysis allowing detection of low MW analytes at levels <1 ng/mL.

SPE Cleanup of Wheat Extracts Prior to the HPLC Analysis of the Mycotoxin Deoxynivalenol

Supel Tox DON SPE cartridges required fewer process steps and fewer reagents than the IAC cleanup method for wheat matrix samples prior to HPLC analysis.

Extraction of Nitroimidazoles from Milk and Eggs using Molecularly Imprinted Polymers

In this report, SupelMIP SPE – Nitroimidazoles was evaluated for the extraction of nitroimidazoles and metabolites from milk and egg.

Online Solid Phase Extraction and LC/MS Analysis of Thyroid Hormones in Human Serum

An online SPE-LC/MS method has been developed for the rapid detection of thyroid hormones in human serum with minimal hands on effort and time-consuming steps.

Solid Phase Extraction: Ion Exchange Methodology

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.

Supel-Select HLB SPE for Pharmaceutical Analysis

Select HLB SPE is a hydrophilic polymer phase for analyte extraction from aqueous matrices. Here it’s used for statins in plasma and 48 pharmaceutical analytes in drinking water.

Ion Exchange Methodology

Ion Exchange Methodology in Sold Phase Extraction, Counter Ion Selectivity & Ion Exchange and the basic steps.

Supel™-Select Polymeric SPE

Supel-Select HLB SPE - a hydrophilic modified styrene based polymer developed for the solid phase extraction of a broad range of compounds from aqueous samples.

Mixed-Mode SPE Improves Extraction of Pharmaceutical Compounds from Biological Fluids

Ion-Suppression & Phospholipid Contamination

We are presenting an article focusing on ion-suppression and phospholipid contamination and some of their major causes and difficulties.

Chiral and Achiral LC-MS Analysis of Warfarin™ in Plasma Samples

Clinical laboratories are beginning to reap the benefits of LC-MS in terms of its sensitivity, specificity, throughput, and potential to reduce cost per sample. The purpose of this study was to demonstrate the LC-MS analysis of Warfarin in plasma samples

HybridSPE-Phospholipid Technology

This Sigma-Aldrich article discusses how the HybridSPE-Phospholipid Technology works and how the phospholipids are removed.

Supel™ Swift HLB SPE cartridges ‒ Solid Phase Extraction (SPE) Made Easy

Supel™ Swift HLB SPE is a polymeric sorbent with lipophilic and hydrophilic functional groups used for solid phase extraction of a wide range of analytes with different polarities. It saves time, offers faster flow rates, and minimum signal enhancement/suppression.

Molecularly Imprinted Polymer SPE Increases Sensitivity for the Extraction of Clenbuterol from Urine

In this report, we demonstrated the extraction of SupelMIP SPE – Clenbuterol method against a published hydrophilic polymer SPE method for the trace extraction of clenbuterol from urine for subsequent LC-MS-MS analysis.

Analysis of Pesticide Residues in Ginger Powder Using QuEChERS Extraction and Clean-up with a Novel Dual Layer SPE Cartridge

The odor and pungency of ginger is due to the presence of terpenes, gingerols and shogaols. These compounds contribute to the highly complex matrix of ginger, which subsequently presents a challenge in low level analyses of contaminants. A novel 2-layer

Analysis of Pesticides in Turmeric Powder by LC/MS/MS and GC/MS/MS after Cleanup with Dual-Layer SPE Cartridge

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.

A Comparison of Solid Phase Extraction (SPE) Products Used to Purify Peanut Paste Extract for Aflatoxin Analysis

Supel Tox AflaZea SPE produced exceptional analyte recoveries with good reproducibility for all aflatoxins while requiring less than half the sample volume required by competing products.HPLC analysis of all spiked samples after SPE cleanup showed that all compared SPE cartridges

Quick, Sensitive LC/MS/MS Analysis of Aflatoxins in Cannabis

Analyte recovery values from spiked cannabis extracts ranged from 102 to 127% with RSD below 12% for 3 replicates. Excellent recovery values were even observed for Aflatoxins B2 and G2 which were spiked at a low level of 6.1 ppb.

Fast and Accurate Analysis of Vitamin D Metabolites Using Novel Chromatographic Selectivity and Sample Preparation

Vitamin D deficiency has become a topic of interest in recent publications. Vitamin D regulates the absorption of calcium within the digestive track and is important to promote proper bone growth and prevent osteoprosis in older adults.

LC-MS BioAnalysis Small Molecules

When analyzing small molecules the overarching need is to maximize sensitivity without compromising reproducibility and laboratory throughput.

Improvement in LC/MS Analysis of Vitamin D Metabolites in Serum by Leveraging Column Selectivity and Effective Sample Prep

Replace Classical Liquid-Liquid Extractions with EXtrelut® NT

Simplify your liquid-liquid extractions with our emulsion-free supported-liquid extraction (SLE) single step solution.

LC/MS/MS Method for Determination of Glyphosate, AMPA, and Glufosinate in Cereals

Glyphosate and related compounds are measured in oatmeal and infant cereal using ion-exchange polymer-based particles for HPLC and SPE. Low level detection was obtained.

Vitamin D epi-Metabolites Separated with HybridSPE-Phospholipid

This Sigma-Aldrich article continues to detail new methodology for the analysis of Vitamin D metabolites using HybridSPE-Phospholipid technology.

Impact of Mobile Phase Additives on LC-MS Sensitivity, Demonstrated using Spice Cannabinoids

This study demonstrates the impact of various mobile phase modifiers on the separation; formate modifiers outperform acetate in terms of MS signals (or sensitivity) and chromatographic resolution.

The Extraction of Amphetamine and Related Drugs using Molecularly Imprinted Polymer SPE

Ion-Exchange SPE Methodology

Normal-Phase Methodology in Solid Phase Extraction Microbiology. In order g003572 for polar retention to occur between the sorbent and the sample, the analyte must be introduced to the SPE device in a non-polar sample or mobile phase environment.

Method Optimization for LC-MS Analysis of Vitamin D Metabolite Critical Pairs in Serum

Novel sample prep technique coupled with the unique selectivity of the Ascentis Express F5 column enables a fast and simplified bioanalytical method for associated vitamin D metabolites.

HybridSPE®-Phospholipid Technology

Innovative solid phase extraction (SPE) technology from Supelco, utilizes phospholipid retention mechanism based on highly selective interaction between proprietary zirconia ions (bonded to the stationary phase) and the phosphate moiety consistent with phospholipids and proteins.

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