中文摘要：

对九龙江河口区不同粒级的TEP含量分布及其与238U2、34U2、34Th2、32Th2、30Th2、28Th2、10Po的放射性比活度和Chl-a含量的相关性进行了研究.结果表明：悬浮颗粒物（SPM）和TEP的粒级分布及深度变化趋势明显不同,这与两者的来源及其贡献不同有关,同时也表明不同粒级的颗粒物在吸附TEP等过程中所起的作用有较大差异.TEP与238U2、34U2、34Th等核素的关系表明,当用234Th-238U和210Po2-10Pb不平衡估算海区的POC输出通量时,应当重视TEP的作用与影响.TEP与Chl-a有一定的正相关性,表明该研究海域TEP与浮游植物有较密切的关系,可能是由浮游植物的细胞外分泌物所形成.

英文摘要：

The relationships between size-fractionated TEP and suspended particulate matter （SPM）, nuclides （238 U 234 U, 234Th,232Th,230Th,228Th,210Po） and Chl-a were investigated in the Jiulong Estuary. The results showed that the size spectra and vertical distributions of TEP were different from those of SPM in this studying area,which were due to their different sources and the different contributions of these sources. At the same time, it indicated that size-fractionated SPM played different roles in adsorption TEP. The relationships between TEP and the nuclides suggested that much attention should be payed to the roles of TEP and its influences when calculating the POC export fluxes through 234 Th-238 U and 210 po-210 Pb disequilibria methods. Ch1-a showed certain positive relationship with TEP,suggesting that TEP were probably produced by the excretion of phytoplankton.