TY  - JOUR 
T1  - Dispersive liquid-liquid microextraction based on solidification of floating organic drop for simultaneous separation/preconcentration of nickel, cobalt and copper prior to determination by electrothermal atomic absorption spectrometry
JO  - Química Nova
A1  - Amirkavei, Mooud
A1  - Dadfarnia, Shayessteh
A1  - Shabani, Ali Mohammad Haji
SN  - 0100-4042
UL  - 10.1590/S0100-40422013000100012
VL  - 36 
Y1  - 2013
PB  - Brasil 
ER  -