含硫蔬菜中50种农药多残留的气相色谱_串联质谱检测技术研究_佟玲.pdfVIP

27 9 V ol127 N o19 2008 9 FEN X I CESH I XU EBAO ( Journal of Ins trum en tal A naly s s) 930~ 935 50- 1, 2 1 佟 玲 , 李重九 ( 1. , 100094; 2. , 100037) : - ( GC- M S /M S) 50 ( 387 5 ) ( G PC ) , , ( EI CI) GC - M S /M S, 2 60% ~ 120% , R SD 114% ~ 161 9% , 012~ 10 L g / kg, : ; ; ; - ; ; : O 657163; S48118 : A : 1004 - 4957 ( 2008) 09- 0930 - 06 D eterm nat on of M u lt-res dues o f 50 Pest c des n Su lfur-conta n ng V egetables by G as Chrom atography- T andem M ass Spectrom etry 1, 2 1 TONG L ng , L I Chong-j u ( 1. Co llege of Sc ence, Ch na A g r cu ltura lU n vers ty, Be j ng 100094, Ch na; 2. N at ona lR esearch Center for G eoana lys s, Be j ng 100037, Ch na) Abstract: A G C- M S /M S m ethod w as deve loped for the sm ultaneou s determ nat on o f 50 pest c des res dues, nc lud ng 38 organophosphoru s pest c des, 7 N-m ethy1 carbam ates and 5 pryetho ds nsec- t c des, whose m o lecular w e gh ts ranged from 185 to 503, n vegetab le. The samp le w as c leaned up by gel perm eat on chrom atog raphy( GPC ), and analyzed by GC - M S /M S under the E I or C I m ode. The m e thod show ed good l near ty for 50 pest c des w th the correlat on coeff c ent range o f 01949- 11000. The average recover es of m ost pest c des n vegetab les sp ked at two levels rang