进境废物原料硫酰氟熏蒸残留浓度测试

Residual Concentration of Fumigant Sulfuryl Fluoride in Containers Loaded with Imported Waste Materials

目的通过对硫酰氟熏蒸残留浓度与开箱散气时间、货物品种、包装状态等条件之间关系的研究得出合理的开箱散气时间。方法开箱门后在不同温湿度、风速条件下,选择不同废物原料品种及箱子不同部位进行残留浓度测试研究。结果在进行试验的3种废物原料中,装载废塑料的集装箱残留浓度高,需散气较长时间。结论硫酰氟残留浓度与环境温湿度、风速以及集装箱规格关系不大,废塑料散气时间较慢,为以后设定正确开箱散气时间及保障检验人员健康提供科学依据。

Objectives To investigate the relationship between the residual concentrations of sulfuryl fluoride after fumigating and the length of time for ventilation, the variety and packing state of goods, in order to get a reasonable length of time for ventilating. Methods Testing the residual concentration after the container being opened at different temperature, different wind speed, loaded with different kinds of materials and at different position of the container. Results Among the 3 waste materials being tested, the residual concentration of sulfuryl fluoride in the container loaded with plastics was the highest and more time was needed for sulfuryl fluoride gas scattering. Conclusions No obvious correlation was observed between the residual concentration of sulfuryl fluoride in containers after ventilation and the temperature, wind speed and the specification of containers; the rate of sulfuryl fluoride gas scattering in containers loaded with plastic materials was slow; the tests in this study offered scientific basis for setting reasonable ventilation time and protecting the safety for workers.