SPME Fiber Coating

Article

Researchers from Fudan University (Shanghai, China) and Nanjing University (Nanjing, China) have proposed the use of polythiophene as a coating for a solid-phase microextraction (SPME) device.

Researchers from Fudan University (Shanghai, China) and Nanjing University (Nanjing, China) have proposed the use of polythiophene as a coating for a solid-phase microextraction (SPME) device. The researchers used an electrodeposition process to coat a stainless steel wire with the compound. The coated wire was then used to extract organochlorine pesticides from water samples. The extracted analytes were analyzed by gas chromatography. The new coating was found to work as well as carbowax?divinylbenzene fibers currently in use.

Related Content
A close-up of lab-on-a-chip devices used for chronic disease monitoring, with vials illuminated in red and purple light. | Image Credit: © Emiliia - stock.adobe.com.

The Importance of Sample Preparation in Quantitative Bioanalytical LC–MS

Robert MacNeill
September 10th 2024
Article

A concise summary and celebration of the role of sample preparation for quantitative analysis in bioanalytical applications.

Bowl of sour cream or yogurt | Image Credit: © Mara Zemgaliete - stock.adobe.com

QuEChERS and UHPLC–MS/MS Used to Analyze Vitamins in Yogurt

Aaron Acevedo
August 26th 2024
Article

Korea Food Research Institute scientists combined QuEChERS extraction with ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC–MS/MS) to analyze vitamins D and K in yogurt.

Woman pouring eucalyptus essential oil into bowl on wooden table | Image Credit: © Pixel-Shot - stock.adobe.com

Supercritical Fluid Extraction’s Effectiveness in Essential Oil Extraction Reviewed

Aaron Acevedo
August 26th 2024
Article

Scientists from multiple universities in Iran recently organized a review article on how supercritical fluid extraction (SFE) can help extract essential oils from plants.

3D Rendering of Small Molecule Drug Binding to Cell Surface Receptor | Image Credit: © Alpha Tauri 3D - stock.adobe.com

Certificate of Analysis (CoA) and Calculations for Small-Molecule Drugs

Michael W. Dong
June 10th 2024
Article

This article describes the contents and associated calculations of CoAs for small-molecule drugs. It explains how these documents help to ensure drug quality in the supply chain.

Central Campus is one of five campuses of University of La Laguna (Universidad de La Laguna). Laguna University - oldest in Canary Islands. San Cristobal de La Laguna, Tenerife, Canary Islands, Spain. | Image Credit: © dbrnjhrj - stock.adobe.com

Dispersive Liquid-Liquid Microextraction: A Review and Roundup of Green Sample Prep Advancements

Patrick Lavery
May 15th 2024
Article

The still relatively new technique has distinct advantages, but a few of those benefits make it incompatible with some of the currently accepted principles of green sample preparation.

close-up capturing the moment of a single drop of liquid leaving a pipette tip during a biomedical test, symbolizing the crucial step in sample preparation for diagnostic analysis, | Image Credit: © forenna - stock.adobe.com

New Sample Preparation Products and Accessories for 2024

Douglas E. Raynie;Mary Ellen P. McNally
May 9th 2024
Article

This yearly report on new products introduced in the preceding year, since March 2023, covers sample preparation instrumentation, supplies, and accessories.