Tricresyl phosphates and cholinesterase.

Composition and biodegradation of a synthetic oil spilled on the perennial ice cover of Lake Fryxell, Antarctica.

A helicopter crashed in January 2003 on the 5 m-thick perennial ice cover of Lake Fryxell, spilling synthetic turbine oil Aeroshell 500. Molecular compositions of the oils were analyzed by gas chromatography-mass spectrometry and compared to the composition of contaminants in ice, meltwater, and sediments collected a year after the accident. Aeroshell 500 is based on C20-C33 Pentaerythritol tri...

Toxicological Evaluation and Limit Values for Nonylphenol, Nonylphenol Ethoxylates, Tricresyl, Phosphates and Benzoic Acid

Dynamic Shear Modulus of Tricresyl Phosphate and Squalane

We have measured the shear modulus and viscosity of two supercooled liquids: tricresyl phosphate and squalane. In both cases we find that the width of the peak in the imaginary part of the shear modulus narrows as the temperature is lowered toward the glass transition temperature. For tricresyl phosphate, we find no evidence for a decoupling of the viscosity and shear modulus relaxation times f...

Portable and remote electrochemical sensing system for detection of tricresyl phosphate in gas phase

A portable electrochemical sensor has been developed for determination of tricresyl phosphate (TCP) in gas phase. An alkaline catalyst column was used in an automatic TCP sampling system where gasified TCP was hydrolysed to cresol, making it electrochemically detectable. Hydrolysates were then detected in the flow injection analysis (FIA). Amperometric measurements were performed utilizing the ...

Voltammetric determination of the neonicotinoid insecticide thiamethoxam using a tricresyl phosphate-based carbon paste electrode

The objective of the work was to investigate the possibility of using a tricresyl phosphate-based carbon paste electrode for the direct voltammetric determination of the neonicotinoid insecticide thiamethoxam. The analyte was determined by differential pulse voltammetry in Britton–Robinson buffer pH 7.0 in the concentration range of 3.72–41.5 μg mL-1. The reproducibility of the analytical signa...