Department of Environmental Engineering, Faculty of Engineering & Architecture, Uludag University, 16059 Bursa, Turkey.
Environ Pollut. 2012 Oct;169:90-7. doi: 10.1016/j.envpol.2012.05.022. Epub 2012 Jun 12.
The variations in the occurrences of PCB congeners both in soil and air were investigated in conjunction with each other, and the changes in the fugacity fractions and flux levels were examined on a seasonal basis. Air and soil samples were collected concurrently two or three times in a month during a one-year monitoring at two different locations in Bursa, located in the northwestern Turkey. Fugacity fractions and net flux levels of PCB congeners were calculated. Air and soil PCB levels increased together as the soil temperature increased, suggesting the influence of instantaneous air-soil exchange towards the equilibrium conditions. The flux levels and fugacity fractions also showed a positive significant correlation with soil temperature. Flux levels were positive for the dates with fugacity fractions above 0.5, indicating volatilization from soil to air.
本研究调查了土壤和空气中 PCB 同系物发生的变化，同时还研究了在季节性基础上，逸度分数和通量水平的变化。在土耳其西北部布尔萨的两个不同地点进行了为期一年的监测，每月采集两次或三次空气和土壤样本。计算了 PCB 同系物的逸度分数和净通量水平。随着土壤温度的升高，空气和土壤 PCB 水平一起升高，表明瞬时气-土交换对平衡条件的影响。通量水平和逸度分数也与土壤温度呈正显著相关。对于逸度分数高于 0.5 的日期，通量水平为正，表明从土壤向空气挥发。
