中文摘要：

为研究典型有机污染物在南京地区的长距离输送潜力，以P，p＇-DDT、7-HCH、BaP和HCB为研究对象，运用TaPL3模型计算了其在研究区大气及水体中的长距离输送潜力．结果表明，BaP和P，p’-DDT通过大气的特征迁移距离（CTD）较小，分别为198km和255km，表现为大气污染长距离输送能力较小，污染较难扩散；而y-HCH和HCB则更倾向于通过水体或大气进行长距离输送，其水体CTD分别为91558km和19056km，大气CTD分别为l858km和21104km，有利于其在研究区的扩散；水对y-HCH和HCB的黏着度为负值，分别为-2．1和-54．86，表明7-HCH和HCB更倾向于滞留在大气环境中，其通过大气并达到稳态后在大气中的质量分数为0．551％和2．2％；通过水体且达到稳态后在大气中的质量分数为0．149％和1．05％，高于P，P’-DDT和BaP．

英文摘要：

In this study, the long-range transport potentials （LRTP） and HCB in air and water of Nanjing were estimated using the TaPL3 of typical organic pollutants including p,p＇-DDT, T-HCH, BaP model. The research results showed that the characteristic travel distances （CTD） of BaP and p,p＇-DDT through air were relatively low, 198 km and 255 km, respectively, indicating relatively low LRTP and difficulty in pollution dispersion. In contrast, y-HCH and HCB tended to transport over longer distances through water and air, with CTD values of 91 558 km and 19 056 km in water and 1 858 km and 21 104 km in air, respectively, indicating that the dispersion of pollution in air and water of the studied area was relatively easy. Furthermore, the stickiness of T-HCH and HCB in water was negative, and the values were -2. 1 and -54.86, respectively, indicating that T-HCH and HCB tended to remain in the atmosphere. The mass fractions in air after they passed air and achieved the steady state were 0. 551% and 2.2%, respectively, whereas the mass fractions in air after they passed water and achieved the steady state were 0. 149% and 1.05% , respectively, which were higher than those of p,p＇-DDT and BaP.