采用重量吸附法研究了聚氯乙烯（PVC）粉末、薄膜和片材中各种浓度下代表性有机溶剂的传输特性，以评估有机污染物通过地下PVC管道渗透的可能性。随着环境中溶剂的浓度或活性的变化，渗透速率会发生多个数量级的变化。PVC管的软化和显著渗透似乎只有在几乎未稀释的溶剂或PVC溶胀剂存在的情况下才可能实现。在活性较低的情况下，溶剂的迁移遵循理想的菲茨基扩散动力学，这仍然与异常高的环境污染水平相对应。因此，可以根据PVC粉末和薄膜的实验室数据对管壁进行可靠的推断。许多世纪以来，计算的渗透速率几乎为零，这表明刚性PVC管是防止环境污染物渗透的有效屏障。 包括13个参考文献、表格、图表。

The transport properties of representative organic solvents at a wide range of concentrations in polyvinyl chloride (PVC) powders, films, and sheets have been studied by gravimetric sorption methods to assess the possibility of organic pollutants permeating through underground PVC pipe. The rate of penetration changes by many orders of magnitude as the concentration, or activity, of solvent in the environment is varied. Softening and significant permeation of PVC pipe seems possible only in the presence of nearly undiluted solvents or swelling agents for PVC. At lower activities, which still correspond to unusually high levels of environmental pollution, solvent transport follows ideal Fickian diffusion kinetics. Thus reliable extrapolations to pipe walls are possible from laboratory data on PVC powders and films. The calculated permeation rates are virtually zero for many centuries, indicating that rigid PVC pipe is an effective barrier against permeation of environmental pollutants. Includes 13 references, table, figures.