Abstract
Benzoic acid is an organic compound that belongs to the group of aromatic carboxylic acids. It is mainly used in the production of phenol, caprolactam and benzoic salts, as a food and pharmaceutical preservative, and in the production of herbicides, insecticides and bactericides. According to the Regulation of the European Parliament and of the Council (WE 1272/2008), benzoic acid is classified as a substance that is harmful to the lungs, irritates the skin and causes eye damage. The aim of the study was to develop a method for the determination of benzoic acid for the assessment of occupational exposure within 1/10–2 of the proposed MAC value. The method involves taking the inhalable fraction of airborne benzoic acid onto a glass fiber filter coated with sodium carbonate(IV), desorption with a solution of methanol in water and then determining the benzoic acid content of the sample by the use of liquid chromatography with diode array detector (UHPLC-DAD). Validation requirements presented in European standard PN-EN 482 were fulfilled during the tests. The method enables determination of benzoic acid in air at concentrations of 0.05 to 1 mg/m3 . The method for determining benzoic acid has been recorded in the form of an analytical procedure (see Appendix). This article discusses the problems of occupational safety and health, which are covered by health sciences and environmental engineering.
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