Ultrapreconcentration and determination of organophosphorus pesticides in water by solid-phase extraction combined with dispersive liquid-liquid microextraction and high-performance liquid chromatography

2015 ◽  
Vol 39 (2) ◽  
pp. 272-278 ◽  
Author(s):  
Junhua Chen ◽  
Guangming Zhou ◽  
Yongli Deng ◽  
Hongmei Cheng ◽  
Jie Shen ◽  
...  
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