低温条件下集装箱熏蒸硫酰氟气体浓度变化与分布规律研究

    慈颖1,苏海滨2,王林1,乔德福2,李金有1,吴鹏飞2,陈春田1

　　1. 中国检验检疫科学研究院, 北京 100123; 2. 辽宁检疫处理集团有限公司

　　摘要:目的   掌握低温条件下集装箱熏蒸硫酰氟气体浓度变化和分布规律。方法   在低温条件下,对40英尺集装箱进行熏蒸处理, 按12?g/m3硫酰氟投药, 对空箱和废塑料集装箱实施密闭熏蒸处理, 检测投药24?h内,对箱体内不同部位药物浓度进行检测。结果   熏蒸24?h内, 空箱内水平、垂直浓度在投药4?h后均衡,实箱(废塑料)投药12?h后箱体水平、垂直浓度均衡, 获得空箱和实箱(废塑料)硫酰氟气体浓度变化和分布规律曲线。结论  在低温条件下, 通过空箱和实箱(废塑料)硫酰氟气体浓度变化和分布规律曲线,动态的了解了硫酰氟从投药、扩散、平衡、衰减的全过程。

　　关键词:低温; 硫酰氟; 垂直水平分布; 浓度衰减

　　中图分类号:R187   文献标识码:B

　　Study on the concentration and distribution of the SulfurylFluoride

　　in a container at lower temperature

　　CI Ying*, SU Hai-bin, WANG Lin, QIAO De-fu, LI Jin-you, WUPeng-fei, CHEN Chun-tian

　　*China Academy of Inspection and Quarantine, Beijing 100123,china.

　　Abstract:   Objective   To study the concentrationchange and distribution of  the Sulfuryl Fluoride in acontainer at lower temperature.   Methods   The 40 foot'scontainers was fumigated with 12?g/m3 Sulfuryl Fluoride at lowertemperature. The concentration of Sulfuryl Fluoride was detected inthe different parts of containers during the 24 h fumigation time.  Results     The curves of distribution of theSulfuryl Fluoride in the empty and waste plastic containerrespectively were made. During the 24?h fumigation time, thedistribution in aclinic and vertical directions of SulfurylFluoride in the empty container got balanced after 4?h, and whichin the waste plastics container got balanced after 12h.  Conclusion   By research on the concentration change anddistribution of Sulfuryl Fluoride in the different containers atlower temperature, we found the dynamic process of SulfurylFluoride from dosing, diffusion, banlance and concentrationdecline..

　　Key words:   Lower temperature; Sulfuryl fluoride;Distribution in aclinic and vertical directions; Concentrationdecline

　　《中国国境卫生检疫杂志》2014年2期