TY  - JOUR 
T1  - Use of activated charcoal in a solid-phase extraction technique for analysis of pesticide residues in tomatoes
JO  - Journal of the Brazilian Chemical Society
A1  - Kaipper, Beatriz I. A.
A1  - Madureira, Luiz A. S.
A1  - Corseuil, Henry X.
SN  - 0103-5053
UL  - 10.1590/S0103-50532001000400012
VL  - 12 
Y1  - 2001
PB  - Brasil 
ER  -