TY  - JOUR
AU  - Niazi, Ali
AU  - Akbari, Mona
AU  - Negahdari, Roza
AU  - Sarkhosh, Maryam
AU  - Khosravi, Asiyeh
TI  - Preconcentration based dispersive liquid-liquid microextraction for spectrophotometric determination of zinc in natural water and human blood after multivariate optimization based on Box-Behnken design
JO  - Journal of the Iranian Chemical Research
VL  - 5
IS  - 4
SP  - 271
EP  - 279
PY  - 2012
DO  - 
ER  -