TY  - JOUR 
T1  - Determination of copper in human hair and tea samples after dispersive liquid-liquid microextraction based on solidification of floating organic drop (DLLME-SFO)
JO  - Journal of the Brazilian Chemical Society
A1  - Bahar, Soleiman
A1  - Zakerian, Razieh
SN  - 0103-5053
UL  - 10.1590/S0103-50532012000600023
VL  - 23 
Y1  - 2012
PB  - Brasil 
ER  -