With the aid of GC-ECD ( gas chromatography with electron capture detection) , a micro matrix solid phase dispersion (MSPD) was used with LC-C18 as dispersant, Alumina-N as purificant and acetonitrile as eluting solvent to analyze residues of organochiorine pesticides (OCPs) in the muscle of Carassius auratus. Results show that when 0. 1 g sample , 0. 4 g LC-C18 and 0. 1 g Alumina-N were used, the addition of 2. 5 mL acetonitrile created a better elution effect with recovery rale varying in the range of 73. 0% — 116. 8% for all the three sample spiking levels (0. 05, 0. 25 and 0. 50 mg · kg-1 ) and relative standard deviation in the range of 1. 6% - 13. 6% . The detection limits for all the fractions of or-ganochlorine stayed below 3.5 μg · kg-1 .Q%建立了以LC-C18填料为分散剂,Alumina-N(中性氧化铝)为净化剂,乙腈为洗脱剂的微型基质固相分散法,并用气相色谱电子捕获检测器(GC-ECD)测定鲫鱼(Carassius auratus)肉中有机氯农药残留.对样品前处理及色谱条件的研究结果表明,在使用0.1g样品、0.4 g LC-C18和0.1 g Alumina-N条件下,以2.5 mL乙腈的洗脱效果为较好,0.05、0.25和0.50 mg·kg-1 3个添加水平的回收率为73.0％～ 116.8％,相对标准偏差为1.6％～13.6％,所有组分检出限均在3.5 μg·kg-1以下.
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