AN1081: Automated Solid-Phase Extraction of Triclosan in Tap Water Using Hydrophilic Reversed-Phase Cartridges and HPLC with UV Detection

Instrument Type: HPLC

In this application note, triclosan-contaminated samples of tap water were simulated by adding known amounts of triclosan-containing liquid hand soap to Sunnyvale tap water. The Dionex AutoTrace 280 instrument along with the high-surface-area, hydrophilic, reversed-phase cartridges were used to concentrate triclosan. The contents of the cartridge eluent were then separated on a reversed phase column using HPLC with UV detection.

Improved analysis of twenty one preservative compounds found in cosmetics using a Thermo Scientific Hypersil GOLD Phenyl column

Instrument Type: HPLC

The Thermo Scientific HPLC system is applied for the analysis of twenty one preservative compounds found in cosmetics. The separation is performed on a Thermo Scientific Hypersil GOLD Phenyl column, with UV detection at 254 and 214 nm.

Quaternary surfactant analysis of a cosmetic formulation using HPLC-CAD

Instrument Type: HPLC-CAD

This method provides an effective analysis of quaternary surfactants in a cosmetic formulation using a Thermo Scientific Dionex UltiMate 3000 HPLC system with charged aerosol detection (CAD). A Thermo Scientific Acclaim Surfactant Plus column is used, which provides improved results as this group of surfactants tends to tail on conventional silica-based reversed-phase columns. The Thermo Scientific Corona charged aerosol detector is an effective choice since the two active ingredients in this formulation are unsuited to UV detection.