TY  - SER
AU  - Zhao,Ercheng
TI  - Application of dispersive liquid-liquid microextraction for the analysis of organophosphorus pesticides in watermelon and cucumber
N1  - YA2008 M07 D01
ISSN  - 0021-9673
Sources  - Journal of Chromatography A
Sources  - 1175 (1) 2007 : 137-140
ER  -