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GLC and HPLCc method for direct determination of the content of phenol and free alkylphenols in the polymer additives of the type of phosphoric-acid aryl esters

M. Petro and Ľ. Bystrický

Research Institute of Chemical Technology, CS-836 03 Bratislava

 

Abstract: The paper presents a new approach to the direct determination of the content of phenol and individual isomers of isopropylphenol in technical and formulated products of additives to polymers on the base of the aryl esters of phosphoric acid, which is based on the gas-liquid (GLC) and/or high- -performance liquid (HPLC) chromatographic method, respectively. The lower limit of detection of individual components is in the range of 0.005—0.01 %. The 95 % confidence limit is (0.100±0.005) %. The methods were verified with some technical and formulated products of different provenience. The results of GLC and HPLC analyses were in good agreement. For comparison, the result obtained by spectrophotometric method is given for each sample.

Full paper in Portable Document Format: 403a357.pdf

 

Chemical Papers 40 (3) 357–362 (1986)

Monday, July 22, 2019

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