Geochemical behavior of 210Pb and 210Po in the nearshore waters off western Taiwan.
Dissolved and particulate (210)Pb and (210)Po were determined at 15 stations along the coastline off western Taiwan in April 2007. The (210)Pb activities in dissolved and particulate phases fell within a relatively small range of 2.4-5.2 dpm 100 L(-1) and 1.0-3.2 dpm 100 L(-1), respectively. The dissolved and particulate (210)Po activities also fell within a small range of 0.8-3.4 dpm 100 L(-1) and 1.1-2.9 dpm 100 L(-1), respectively. The correlation of the distribution coefficients (K(d)) of (210)Pb and (210)Po with particle concentration in turbid waters are not as evident as in the open ocean. The mass balance calculation shows that the residence times of (210)Pb and (210)Po with respect to particle removal from the nearshore waters ranges from 3 to 15 days and from 14 to 125 days, respectively. The flux of particulate organic carbon was estimated by (210)Po proxy and ranged from 4.8 to 33.7 mmol-C m(-2) d(-1).
Institute of Oceanography, National Taiwan University, P.O. Box 23-13, Taipei 106, Taiwan. weic@ntu.edu.tw
Ching-Ling
CL
Wei
Shiao-Yu
SY
Lin
Liang-Saw
LS
Wen
David D-D
DD
Sheu
D002244:Carbon / Q000032:analysis / Q000378:metabolism; D004784:Environmental Monitoring; D007856:Lead Radioisotopes / Q000032:analysis*; D009792:Oceans and Seas; D012623:Seawater / Q000737:chemistry*; D013624:Taiwan; D014874:Water Pollutants, Chemical / Q000032:analysis*
D007856:Lead Radioisotopes; D014874:Water Pollutants, Chemical; D002244:Carbon