Kit and Methods for the Analysis of Wood-Tar Creosote

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Creosote is an oil obtained by pyrolysis of plant-derived material and the distillation of various tars. Coal-tar creosotes have stronger, more toxic properties and commonly used for wood preservation. Currently, the more common uses of wood-tar creosote include meat preservation and as a replacement for smoking meats because it provides the smoky flavor, but previously uses include ship treatment and medical purposes. There are significant chemical differences between wood-tar creosotes and coal-tar creosotes. Wood-tar creosotes are primarily phenolic compounds, while coal-tar creosotes are predominantly aromatic hydrocarbons with phenols present as a minor component. Creosotes are generally complex mixtures; their analysis involves separation into individual components using some sort of chromatography, usually gas chromatography, with mass spectrometric detection or by non-specific detection of the class of compounds (phenols) and not by individual structure. Infrared spectrometry can determine the hydrogen composition, but does not distinguish among aromatic components. There is need for a method that can quantify the overall phenolic composition of the compounds.

Researchers at Purdue University have developed a kit and methods for the simultaneous detection of different phenols in a single mixture. This technology does not require chromatographic separation. The kit consists of multiple chemical solutions. The detection of phenols results from combining the phenol(s) sample with the kit solutions, followed by analysis using electrospray ionization mass spectrometry. The kit contains multiple internal standard solution options, varying in concentration. The extent of color change that occurs upon mixing the phenol solution with the reagent assists in choosing the appropriate solution. This technology provides an effective solution for analyzing the overall composition of phenols in wood-tar creosote.

-Simultaneous detection of multiple phenol derivatives without separation
-More specific determination of phenol composition
-Separation of phenols is not required

Potential Applications:
-Wood-tar creosotes
-Analysis of wood-smoke condensates
-Analysis of cannabis and hemp oil
-Tannins in red wine
-Detection of L-DOPA metabolites in urine and serum
Jan 20, 2019
Utility Patent
United States

Jan 22, 2018
United States
Purdue Office of Technology Commercialization
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