商品与质量·学术观察
商品與質量·學術觀察
상품여질량·학술관찰
SHANGPIN YU ZHILIANG
2014年
4期
254-254,326
,共2页
基质分散固相萃取%茶叶%农药残留%有机氯%拟除虫菊酯%气相色谱仪%GC-μECD
基質分散固相萃取%茶葉%農藥殘留%有機氯%擬除蟲菊酯%氣相色譜儀%GC-μECD
기질분산고상췌취%다협%농약잔류%유궤록%의제충국지%기상색보의%GC-μECD
Dispersive solid phase extraction%Tea%Pesticide residues%Organochlorine%Pyrethriod%Gas chromatography%GC-μECD
建立了一种茶叶中13种有机氯和拟除虫菊酯类农药残留的气相色谱分析方法。样品经乙腈提取，提取液用无水硫酸镁、PSA和GCB纯化，以GC-μECD法测定，外标法定量。13种农残在0.016～0.24mg/L内线性关系良好（R2>0.994），加标量在0.4～1.5 mg/L的回收率在81%～122%之间，检出限为0.001～0.005 mg/kg。本方法简便、快速、经济、可靠，适用于茶叶样品中有机氯和拟除虫菊酯类农残的快速分析。
建立瞭一種茶葉中13種有機氯和擬除蟲菊酯類農藥殘留的氣相色譜分析方法。樣品經乙腈提取，提取液用無水硫痠鎂、PSA和GCB純化，以GC-μECD法測定，外標法定量。13種農殘在0.016～0.24mg/L內線性關繫良好（R2>0.994），加標量在0.4～1.5 mg/L的迴收率在81%～122%之間，檢齣限為0.001～0.005 mg/kg。本方法簡便、快速、經濟、可靠，適用于茶葉樣品中有機氯和擬除蟲菊酯類農殘的快速分析。
건립료일충다협중13충유궤록화의제충국지류농약잔류적기상색보분석방법。양품경을정제취，제취액용무수류산미、PSA화GCB순화，이GC-μECD법측정，외표법정량。13충농잔재0.016～0.24mg/L내선성관계량호（R2>0.994），가표량재0.4～1.5 mg/L적회수솔재81%～122%지간，검출한위0.001～0.005 mg/kg。본방법간편、쾌속、경제、가고，괄용우다협양품중유궤록화의제충국지류농잔적쾌속분석。
A method for determination of 13 organochlorine and pyrethriod pesticide residues in tea by dispersive solid phase extraction and gas chromatography was developed. The samples were extracted by acetonitrile, and then purified by PSA and GCB. The residues were determined by GC-μECD. The standard curves of 13 kinds of pesticide residues showed linearity in the range of 0.016-0.24 mg/L. Recoveries of pesticide residues were in the range of 81%-122% at the spiked levels of 0.4-1.5 mg/L. The limits of detection were in the range of 0.001-0.005 mg/kg. The method is simple, rapid, economical and reliable can be suitable for the fast analysis of organochlorine and pyrethriod pesticide residues in tea samples.
