TY  - JOUR 
T1  - Analysis of ortho-cresol in urine by solid phase microextraction-capillary gas chromatography
JO  - Journal of the Brazilian Chemical Society
A1  - Paiva, Maria José N. de
A1  - Martins, Isarita
A1  - Siqueira, Maria Elisa P. B. de
SN  - 0103-5053
UL  - 10.1590/S0103-50532007000500024
VL  - 18 
Y1  - 2007
PB  - Brasil 
ER  -