Trace Metals in Oysters, Crassotrea sps., from UNESCO Protected Natural Reserve of Urdaibai: Space-Time Observations and Source Identification

被引:17
作者
Raposo, J. C. [1 ]
Bartolome, L. [1 ]
Cortazar, E. [1 ]
Arana, G. [1 ]
Zabaljauregui, M. [1 ]
de Diego, A. [1 ]
Zuloaga, O. [1 ]
Madariaga, J. M. [1 ]
Etxebarria, N. [1 ]
机构
[1] Univ Basque Country, Dept Analyt Chem, Bilbao 48080, Spain
关键词
Oysters; Trace metals; ICP-MS; Biomonitoring; Urdaibai estuary; WATER-QUALITY;
D O I
10.1007/s00128-009-9693-9
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The seasonal and spatial variability of trace metal concentrations of oyster tissues (Crassostea sps.) was studied. The samples were collected between 2002 and 2004 along the Urdaibai estuary (Murueta, Kanala and Arteaga). The seasonal influence on some metal concentrations (higher values in spring-summer season than in autumn-winter season) is more pronounced than the local site-specific influence. Furthermore, within each location a significant time-specific dependence on the trace metal concentration variations can be detected. Substantially higher concentrations of Zn (445.5-2,403.3 mg kg(-1)) and Mn (29.4-169.6 mg kg(-1)) were recorded in oysters inhabiting estuarine locations, possibly indicating a markedly higher natural bioavailability at these locations. Principal component analysis demonstrated that oysters could be separated depending on the inhabiting areas: Sn for Murueta, essential metals for Kanala, and Co and Cd for Arteaga sampling points, respectively.
引用
收藏
页码:223 / 229
页数:7
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