Assessment of metal and trace element concentrations in the Cananeia estuary, Brazil, by neutron activation and atomic absorption techniques

被引：13

作者：

Amorim, E. P. ^{[1
]}

Favaro, D. I. T. ^{[1
]}

Berbel, G. B. B. ^{[2
]}

Braga, E. S. ^{[2
]}

机构：

[1] IPEN CNEN SP, BR-05508000 Sao Paulo, Brazil

[2] Univ Sao Paulo, Inst Oceanog, LABNUT, Lab Nutr Micronutr & Tracos Oceanos, BR-05508900 Sao Paulo, Brazil

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2008年 / 278卷 / 02期

关键词：

D O I：

10.1007/s10967-008-0909-y

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Twenty six bottom sediment samples were collected from the Cananeia estuary in summer and winter of 2005. Multielemental analysis was carried out by instrumental neutron activation analysis. Total mercury was determined by cold vapor atomic absorption. As, Cr, Hg and Zn concentrations were compared to the Canadian oriented values (TEL and PEL). Sample points 4 and 9 presented higher concentration for most elements and As and Cr exceeded the TEL values. Organic matter (>10%) associated with siltic and clay sediments was observed. Climatic conditions, hydrodynamic and biogeochemical processes promote differences in seasonal concentrations of elements at some points, which contribute to special distributions.

引用

页码：485 / 489

页数：5

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