Creosote Analysis By the Teg-F, Chromatographic, and Spectrophotometric Methods

Various advantages and disadvantages of the TEG-F, the chromatographic, and the spectophotometric methods of creosote analysis are compared. A number of blends of creosote with four different petroleum oils and a number of blends of 70-30 creosote-coal tar solution with the same four petroleum oils were analyzed by the three methods where possible. All methods were considered easy to perform and no specialized training is necessary. The TEG-F method requires about 1 hour, the chromatographic method 3 hours, and the spectrophotometric 15 minutes for a single analysis. The average error for TEG-F was 78 to 102 percent, 4 to 11 percent for the chromatographic, and 15 to 20 percent for the spectrophotometric. The TEG-F method of analysis was considered to be a less desirable method of analysis than the chromatographic and spectrophotometric methods because of limited application and greater error.

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