CHARACTERISTICS OF VOCs EMISSION FROM A PETROCHEMICAL INDUSTRY AREA AND ASSOCIATED CONTRIBUTIONS TO SECONDARY POLLUTION

Abstract

Abstract: Atmospheric volatile organic compounds (VOCs) were continuously monitored using on-line gas chromatography mass spectrometer/flame ionization detector system（GC-MS/FID） in a petrochemical industry area from January 2020 to June 2020 to analyze the emission characteristics, ozone formation potential, and potential sources of VOCs. During the sampling period, alkanes were the most predominant VOCs, followed by aromatic compounds and oxygenated VOCs. Four potential sources of VOCs were quantified by the positive matrix factorization model, including chemical companies on the southeast side, chemical companies on the southwest side, refinery production areas, sewage treatment area. According to the secondary pollution assessment method, the contribution of chemical companies and refinery emission sources to the zone formation potential is 50% each, while the contribution of chemical companies to the secondary organic aerosol is significantly higher than that of refineries. Therefore, priority control strategies should be formulated based on the selected major pollution sources and key active components in the petrochemical industrial park.

Key words: petrochemical industry area, volatile organic compounds, emission characteristics, ozone, organic aerosol, source apportionment

References

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