Monbet Ph
Laboratoire de Chimie Marine, Université de Bretagne Occidentale, et U.P.R. 9042 C.N.R.S. Roscoff, Place Nicolas Copernic, Technopôle Brest Iroise, 29280 Plouzané, France.
Mar Pollut Bull. 2004 Jan;48(1-2):78-86. doi: 10.1016/S0025-326X(03)00327-8.
Dissolved and particulate copper were measured over an annual cycle (12 surveys between February 1998 and January 1999) in the Morlaix Estuary (Brittany, France). These variations were investigated in both the water column and the benthic compartment in order to calculate fluxes of copper within estuary. In the water column, dissolved and particulate copper concentrations ranged from 0.6 to 19.0 nM and from 0.03 to 2.3 micromol g(-1), respectively. In the benthic compartment, copper concentrations in superficial sediment varied from 0.04 to 0.32 micromol g(-1) and from 7.6 to 80.5 nM in the pore waters. The results show that copper contents in the water column reached levels commonly observed in estuaries affected by heavy industrial activities. Agricultural activities, extensively developed on the drainage basin, may be responsible for the copper excess. Mass balance of copper indicates that the metal accumulated within the estuary with a rate ranging from 97 to 119 kg yr(-1).
在法国布列塔尼的莫尔莱河口，对溶解态铜和颗粒态铜进行了为期一年的监测（1998年2月至1999年1月期间共进行了12次调查）。为了计算河口内铜的通量，对水柱和底栖生物区的这些变化进行了研究。在水柱中，溶解态铜和颗粒态铜的浓度分别为0.6至19.0纳摩尔/升和0.03至2.3微摩尔/克（-1）。在底栖生物区，表层沉积物中的铜浓度为0.04至0.32微摩尔/克，孔隙水中的铜浓度为7.6至80.5纳摩尔/升。结果表明，水柱中的铜含量达到了受重工业活动影响的河口通常观察到的水平。流域内广泛开展的农业活动可能是铜过量的原因。铜的质量平衡表明，该金属在河口内的积累速率为97至119千克/年（-1）。
