Abstract Optimization of Tessier procedure for trace metal partitioning in sediments is studied. Firstly simplex optimization method is applied and the results indicate that the volume of extractant solution/weight of sediment ratio (V/m) is the main variable. Optimization of V/m ratio for second, third and fourth fractions of Tessier scheme is studied on two different river sediments. The optimum values of V/m ratio obtained are applied for copper, lead, chromium and nickel partitioning. The results obtained are compared with those obtained using Tessier procedure. Some conclusions about the behaviour of each fraction are presented.
[1]
R. Rubio,et al.
Determination and speciation of copper and lead in sediments of a Mediterranean river (River Tenes, Catalonia, Spain)
,
1988
.
[2]
K. Turekian,et al.
Distribution of the Elements in Some Major Units of the Earth's Crust
,
1961
.
[3]
Application of factor analysis and simplex technique to the optimization of a phosphate determination via molybdenum blue
,
1976
.
[4]
J. R. Moody.
The NBS clean laboratories for trace element analysis
,
1982
.
[5]
A. Tessier,et al.
Sequential extraction procedure for the speciation of particulate trace metals
,
1979
.
[6]
W. Pickering,et al.
Metal ion speciation — soils and sediments (a review)
,
1986
.