TY  - JOUR 
T1  - Application of simplex optimization in the development of an automated online preconcentration system for manganese determination
JO  - Journal of the Brazilian Chemical Society
A1  - Santos, Queila O. dos
A1  - Novaes, Cléber G.
A1  - Bezerra, Marcos A.
A1  - Lemos, Valfredo A.
A1  - Moreno, Islania
A1  - Silva, Douglas G. da
A1  - Santos, Leandro dos
SN  - 0103-5053
UL  - 10.1590/S0103-50532010001200022
VL  - 21 
Y1  - 2010
PB  - Brazil 
ER  -