Determination of phthalates in particulate matter and gaseous phase emitted into the air of the working environment

The paper presents the results of phthalates measurements in 4 companies producing or processing materials made of rubber and plastics. Six priority phthalates were determined in air samples both in the respirable and inhalable particle fractions. For the determination of phthalates, GC/MS was applied, which ensures the determination of the method at the level of 0.066 mu g/m(3) for fibreglass filter and polyurethane foam and 0.022 mu g/m(3) for Amberlite resin XAD-2, while taking 720 L of air samples. The results of the measurements showed that dimethyl phthalate, diethyl phthalate and dibutyl phthalate (DBP) dominated in all the investigated companies in the gaseous phase of air sampling. For example, in a company producing rubber details for car accessories, the concentration of DBP ranged from 54 to 74% of the total phthalate concentration determined in the gaseous phase. The inhalable particle fraction was dominated by two compounds, i.e. DBP and di(2-ethylhexyl) phthalate DEHP, and their total concentration was a significant percentage, on average over 83% of the sum of all phthalates determined in the inhalable fraction in the investigated companies. As particle size affects the location of phthalate deposition in the respiratory tract, the determination of concentration levels of individual phthalates in the gaseous phase and in inhalable and respirable fractions can provide valuable information that can be used to improve the health and safety of workers at work.