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A Robust and Sensitive Method for Detecting Glyphosate and Other Polar Pesticides in Food and Water: Multiple Analytes in a Single Injection without DerivatizationA new high-throughput LC–MS/MS method meets the challenge of eliminating matrix effects for monitoring, with high specificity, polar organic pesticides such as glyphosate in food and water, while meeting targeted limits of detection.
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A Robust and Sensitive Method for Detecting Glyphosate and Other Polar Pesticides in Food and Water: Multiple Analytes in a Single Injection without DerivatizationA new high-throughput LC–MS/MS method meets the challenge of eliminating matrix effects for monitoring, with high specificity, polar organic pesticides such as glyphosate in food and water, while meeting targeted limits of detection.
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GC×GC–MS for Forensic AnalysisForensic scientists often encounter highly complex analytical problems related to crime scenes that would benefit from the capabilities of GC×GC–MS. However, this technique has not been fully explored to help benefit forensic laboratories.
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Determination of Diclofenac in Water Samples from Wastewater Treatment Plants by Large Volume Injection-Gas Chromatography–Mass SpectrometryA new method to analyze low concentrations of the drug diclofenac in wastewater.
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Determination of Diclofenac in Water Samples from Wastewater Treatment Plants by Large Volume Injection-Gas Chromatography–Mass SpectrometryA new method to analyze low concentrations of the drug diclofenac in wastewater.
Latest:
Determination of Diclofenac in Water Samples from Wastewater Treatment Plants by Large Volume Injection-Gas Chromatography–Mass SpectrometryA new method to analyze low concentrations of the drug diclofenac in wastewater.
Latest:
Determination of Diclofenac in Water Samples from Wastewater Treatment Plants by Large Volume Injection-Gas Chromatography–Mass SpectrometryA new method to analyze low concentrations of the drug diclofenac in wastewater.
Latest:
Determination of Diclofenac in Water Samples from Wastewater Treatment Plants by Large Volume Injection-Gas Chromatography–Mass SpectrometryA new method to analyze low concentrations of the drug diclofenac in wastewater.
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The Negative Impact of Inclusions in Metallic Alloys for GC and LC Components and AnalysesWebinar Date/Time: Wed, May 15, 2024 2:00 PM EDT
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The Fundamental Shift to Tandem Mass SpectrometryIn this article, we examine how tandem and tandem hybrid mass spectrometry has opened up new frontiers already. We go further and examine how lesser-known experiments are breaking new ground, with alternative fragmentation techniques, as well as the addition of extra levels of orthogonality by parallel separations techniques.
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Material Identification by HPLC with Charged Aerosol DetectionMaterial identification is a common need in many industries, most notably for pharmaceutical manufacturing where the United States Pharmacopeial Convention (USP) defines many identification tests.
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Chiral Purification with Stacked Injections and Collections Using the Prep 100 SFC MS Directed SystemChiral chromatography has become the preferred tool for enantiomer separations in the early stages of pharmaceutical development for the purpose of accurately identifying single pure enantiomers with pharmacologic, toxicological, and clinical information, as stipulated by the FDA.1
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Dispersive Miniaturized Solid‑Phase Extraction Using the CIM‑81 Metal‑Organic Framework and Gas Chromatography–Mass Spectrometry to Determine Personal Care Products in WatersThe analysis of contaminants found in environmental waters and originating from personal care products using metalorganic frameworks (MOFs) combined with liquid chromatography (LC) is described. This work expands the use of MOFs from gas chromatography to LC and also meets the requirements of green analytical chemistry.
Latest:
Dispersive Miniaturized Solid‑Phase Extraction Using the CIM‑81 Metal‑Organic Framework and Gas Chromatography–Mass Spectrometry to Determine Personal Care Products in WatersThe analysis of contaminants found in environmental waters and originating from personal care products using metalorganic frameworks (MOFs) combined with liquid chromatography (LC) is described. This work expands the use of MOFs from gas chromatography to LC and also meets the requirements of green analytical chemistry.
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Enter the Matrix: Improving the Interpretation of Separations Data Using Chemometrics in Analytical InvestigationsExamples from food science illustrate the usefulness of chemometrics techniques like pattern recognition, regression, and classification.
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Profiling Free Naphthenic Acids in Produced Water Using Gas Chromatography Coupled to High Resolution Accurate Mass SpectrometryIn this instalment of “Column Watch”, a simple method for profiling free naphthenic acids in produced water by GC–MS is proposed.
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Exploring the Efficiency of Various Extraction Approaches for Determination of Crude MCHM Constituents in Environmental SamplesIt is important to develop analytical methods to detect crude MCHM components in environmental water samples. This article describes two microextractive methods based on solid-phase microextraction (SPME) in fibre format and thin film microextraction (TFME) that were developed and validated for 4-MCHM and other constituents of crude MCHM.
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Exploring the Efficiency of Various Extraction Approaches for Determination of Crude MCHM Constituents in Environmental SamplesIt is important to develop analytical methods to detect crude MCHM components in environmental water samples. This article describes two microextractive methods based on solid-phase microextraction (SPME) in fibre format and thin film microextraction (TFME) that were developed and validated for 4-MCHM and other constituents of crude MCHM.
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Nanomaterials Have Come to Stay: An Overview of their Use as Sorbents in Sample PreparationThis article reviews how nanomaterials are being used in a variety of sample preparation techniques, such as dispersive solid-phase extraction (dSPE), solid-phase microextraction (SPME), stir-bar sorptive extraction (SBSE), and matrix solid-phase dispersion (MSPD).
Latest:
Nanomaterials Have Come to Stay: An Overview of their Use as Sorbents in Sample PreparationThis article reviews how nanomaterials are being used in a variety of sample preparation techniques, such as dispersive solid-phase extraction (dSPE), solid-phase microextraction (SPME), stir-bar sorptive extraction (SBSE), and matrix solid-phase dispersion (MSPD).
Latest:
Exploring the Efficiency of Various Extraction Approaches for Determination of Crude MCHM Constituents in Environmental SamplesIt is important to develop analytical methods to detect crude MCHM components in environmental water samples. This article describes two microextractive methods based on solid-phase microextraction (SPME) in fibre format and thin film microextraction (TFME) that were developed and validated for 4-MCHM and other constituents of crude MCHM.
Latest:
Nanomaterials Have Come to Stay: An Overview of their Use as Sorbents in Sample PreparationThis article reviews how nanomaterials are being used in a variety of sample preparation techniques, such as dispersive solid-phase extraction (dSPE), solid-phase microextraction (SPME), stir-bar sorptive extraction (SBSE), and matrix solid-phase dispersion (MSPD).
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“Truly Natural”: Fully Automated Stir-Bar Sorptive Extraction with Enantioselective GC–MS Quantitation of Chiral Markers of Peach AromaA simple, automated, and fast method to quantify complex odorants in foods is described using stir-bar sorptive extraction (SBSE) combined with fast enantioselective GC–MS analysis. The total analytical method takes only 30 minutes and does not require any sample pretreatment.
Latest:
“Truly Natural”: Fully Automated Stir-Bar Sorptive Extraction with Enantioselective GC–MS Quantitation of Chiral Markers of Peach AromaA simple, automated, and fast method to quantify complex odorants in foods is described using stir-bar sorptive extraction (SBSE) combined with fast enantioselective GC–MS analysis. The total analytical method takes only 30 minutes and does not require any sample pretreatment.
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Tips & Tricks GPC/SEC: Column Issues with Light Scattering DetectorsThe addition of a light scattering detector dramatically increases the capabilities of gel permeation chromatography/size-exclusion chromatography (GPC/SEC) analysis. However, the complexity of the system also increases. This instalment of Tips & Tricks discusses column issues when working with light scattering detectors.
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Automated Drug Screening of Dried Blood Spots Using Online LC–MS/MS AnalysisA fully automated method for the effective drug screening of large populations based on dried blood spot (DBS) technology is presented. DBSs were prepared, scanned, then spiked with deuterated standards, and directly extracted, before they were transferred online to an analytical liquid chromatography (LC) column and then to the electrospray ionization tandem mass spectrometry (ESI-MS/MS) system. The method was applied to DBS samples from two patients with back pain; codeine and oxycodone could be identified and quantified accurately below the level of misuse of 89.6 ng/mL and 39.6 ng/mL, respectively.
Latest:
Automated Drug Screening of Dried Blood Spots Using Online LC–MS/MS AnalysisA fully automated method for the effective drug screening of large populations based on dried blood spot (DBS) technology is presented. DBSs were prepared, scanned, then spiked with deuterated standards, and directly extracted, before they were transferred online to an analytical liquid chromatography (LC) column and then to the electrospray ionization tandem mass spectrometry (ESI-MS/MS) system. The method was applied to DBS samples from two patients with back pain; codeine and oxycodone could be identified and quantified accurately below the level of misuse of 89.6 ng/mL and 39.6 ng/mL, respectively.
Latest:
Automated Drug Screening of Dried Blood Spots Using Online LC–MS/MS AnalysisA fully automated method for the effective drug screening of large populations based on dried blood spot (DBS) technology is presented. DBSs were prepared, scanned, then spiked with deuterated standards, and directly extracted, before they were transferred online to an analytical liquid chromatography (LC) column and then to the electrospray ionization tandem mass spectrometry (ESI-MS/MS) system. The method was applied to DBS samples from two patients with back pain; codeine and oxycodone could be identified and quantified accurately below the level of misuse of 89.6 ng/mL and 39.6 ng/mL, respectively.
