Abstract：Simulation experiments were carried out to study the volatilization process of seven kinds of benzene series in seawater under different environmental conditions. The concentration of benzene series was determined by purging and trapping gas chromatography-mass spectrometry (PT-GC-MS). The corresponding volatilization kinetic curves, volatilization kinetic models and optimal fitting formulas were obtained. The effects of temperature and wind speed on the volatilization of benzene series were discussed. The results showed that the volatilization kinetic curves of benzene series under different temperature and specific wind speed can be fitted by exponential equation with high fitting precision, according with the first-order reaction kinetics model. The volatilization of seven kinds of benzene series in seawater with time was similar. At room temperature (25℃), the volatilization rate of each component of benzene series was obviously higher than that of 4℃. At the same temperature, the wind speed made the volatilization rate of benzene series in seawater faster. The volatilization rate of styrene and toluene in seawater was slightly high, while xylene was relatively low. Under different experimental conditions, the volatilization rate of benzene series in seawater was different. The total volatilization rate of benzene series in seawater was that:room temperature of 25℃+specific wind speed > room temperature of 25℃+ static volatilization > low temperature of 4℃+specific wind speed > low temperature of 4℃+static volatilization. The contribution of wind speed to the volatilization of benzene series was significant at low temperature of 4℃.
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