Culshaw Caroline, Newton Lyn C, Weir Iain, Bird David J
Severn Estuary Research Group, Faculty of Applied Sciences, University of the West of England, Bristol, UK.
Mar Environ Res. 2002 Sep-Dec;54(3-5):331-4. doi: 10.1016/s0141-1136(02)00163-0.
Cd, Zn and Cu levels were determined in sediments and Crangon crangon from 9 sites in the Severn Estuary/Bristol Channel during winter 1999. Metal levels in both shrimp and sediments varied significantly between sites and were related to proximity of input and/or sediment type. In the upper Estuary, Cd levels in shrimp were 100x higher than other reported values whereas sediment Cd contamination was comparable. It is suggested that high Cd levels in shrimp are due to the high inputs and enhanced bioavailability of metal during winter.
1999年冬季，对塞文河口/布里斯托尔海峡9个地点的沉积物和褐虾中的镉、锌和铜含量进行了测定。虾和沉积物中的金属含量在不同地点之间存在显著差异，并且与输入源的距离和/或沉积物类型有关。在河口上游，虾体内的镉含量比其他报告值高100倍，而沉积物中的镉污染程度相当。研究表明，虾体内镉含量高是由于冬季金属输入量大以及金属的生物可利用性增强。
