Yi, Xionghai <br/><br/>
Determination of organophosphorus pesticide residues in the roots of Platy codon grandiflorum by solid-phase extraction and gas chromatography with flame photometric detection / 
Xionghai Yi, Wing Hua and Yitong Lu 
<br/><br/> YA2006 M09 D01 
<br/><br/><label>Source: </label>Journal of AOAC International 89 (1) 2006 : 214-224 1060-3271