title: Distributions and removal fluxes of trace metals in the water column of the Hung-Tsai Trough off southwestern Taiwan.
abstract: Vertical profiles of dissolved and particulate Mn, Fe, Ni, Cu, Zn, Cd, Pb, and (234)Th were determined in the Hung-Tsai Trough off southwestern Taiwan during 19-23 November, 2004. Except in the case of Cd, the distribution coefficient (K(d)) of the trace elements showed a negative correlation with the suspended particle concentration. Based on the average K(d) values, the general sequence of particle affinities for the eight trace elements is, from highest to lowest, Fe>Mn≈Pb>Zn≈Th>Cd≈Cu≈Ni. The trace metal data was coupled with the particle removal flux estimated from (234)Th/(238)U disequilibrium to investigate metal removal by particle sinking from the euphotic layer. The residence time of trace elements with respect to particle removal from the euphotic layer was estimated. A negative correlation between the residence time and the distribution coefficient for the trace metals was found.
authors.affiliation: Institute of Oceanography, National Taiwan University, Taipei, Taiwan, ROC. weic@ntu.edu.tw
authors.forename: Ching-Ling
authors.initials: CL
authors.lastname: Wei
authors.forename: Kuo-Tung
authors.initials: KT
authors.lastname: Jiann
authors.forename: Liang-Saw
authors.initials: LS
authors.lastname: Wen
authors.forename: David D-D
authors.initials: DD
authors.lastname: Sheu
mesh_terms: D004784:Environmental Monitoring; D008670:Metals / Q000032:analysis*; D008956:Models, Chemical; D013624:Taiwan; D014872:Water Movements; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014877:Water Pollution, Chemical / Q000706:statistics & numerical data
chemical_list: D008670:Metals; D014874:Water Pollutants, Chemical