THE SIGNIFICANT ROLE OF COLLOIDS IN THE TRANSPORT AND TRANSFORMATION OF ORGANIC-CARBON AND ASSOCIATED TRACE-METALS (CD, CU AND NI) IN THE RHONE DELTA (FRANCE)

被引：132

作者：

DAI, M

MARTIN, JM

CAUWET, G

机构：

[1] ECOLE NORMALE SUPER, IFREMER,INST BIOGEOCHIM MARIEN,CNRS, UNITE RECH MARINE 6,UNITE ASSOCIEE 386, F-92120 MONTROUGE, FRANCE

[2] UNIV PARIS 06, LAB ARAGO,CNRS,GDR 909, RECH INTERACT CONTINENT OCEAN GRP, F-66650 BANYULS SUR MER, FRANCE

来源：

MARINE CHEMISTRY | 1995年 / 51卷 / 02期

关键词：

D O I：

10.1016/0304-4203(95)00051-R

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The distribution of organic C and trace elements (Cd, Cu, and Ni) between truly dissolved and colloidal phases was determined in May 1992, in order to better understand their behavior during estuarine mixing in the Rhone delta (France). Colloidal material (10(4) Daltons-0.4 mu m) was separated with an ultra-clean cross-flow filtration system. A considerable part of the organic C and trace metals studied, used to be considered to occur in the so-called ''dissolved'' pool, is associated with colloidal material. The significant correlation between colloidal organic C and colloidal Cu suggests an important involvement of colloidal organic material in the transport of this element. The correlation between Ni, Cd and organic matter mainly occurs in the truly dissolved fraction, suggesting that the truly dissolved organic C is important for these two elements. Truly dissolved and colloidal organic C and trace-metal fluxes transported from the River Rhone to the northwestern Mediterranean Sea were estimated.

引用

页码：159 / 175

页数：17

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