TY  - JOUR 
T1  - Determination of acidic herbicides in water samples by in situ derivatization, single drop microextraction and gas chromatography-mass spectrometry
JO  - Journal of the Brazilian Chemical Society
A1  - Araujo, Lilia
A1  - Prieto, Avismelsi
A1  - Troconis, María
A1  - Urribarri, Grilena
A1  - Sandrea, Williams
A1  - Mercado, Jair
SN  - 0103-5053
UL  - 10.1590/S0103-50532011001200016
VL  - 22 
Y1  - 2011
PB  - Brasil 
ER  -