ASE及GPC技术在测定对羟基苯甲酸酯类防腐剂中的-福建农业学报.PDFVIP

福建农业学报25( 1) : 77~ 81, 2010 : 1008- 0384 (20 10) 01- 077- 05 F uj ian Journal of Ag ricultural Sciences A SE GPC 王 勍 ( , 350025) : ( ) / ( 11, V/ V) , ( ASE) , ( GPC) , GC- FID 4 05~ 400 mg kg- 1 , 50 g 05 mg kg- 1 05 mg kg- 1 06 mg kg- 1 06 mg kg- 1 ( S/ N 3) , 85% ~ 110% , RSD 10% , : ; ; ; ; : X 830 : A Application of ASE and GPCtechniquesfor parabens assay WA NG Qing (F uz hou P rod uct Quality Monitoring Bureau, Fuzhou, Fuj ian 350025, China) Abstract: A rapid and onvenient pre-treatment met hod for the dete t ion of p-hy droxy benzoate, a ategory of om- monly used food preservat ives in luding methyl ester , ethyl ester, propyl ester and butyl ester , w as developed Samples w ere extra ted using an a elerat ing solvent ext ra tion devi e ( ASE) w ith a y lohexane-a etoa etate mix- ture ( 11, v/ v) as the solvent T he extra ted mixtures w ere then purified by hromatograph of gel permeation ( GPC) and assay ed by using the dete tor GC-FID A satisfa tory linear relationship w as found in the range of 05- 400 mg kg- 1 for 4 parabens The sensitivity on 50g sample w as 05 mg kg- 1 , 05 mg kg- 1 , 06 mg kg- 1 and 06 mg kg- 1 , ( S/ N 3) The average re overy rates ranged betw een 85% - 110% , and RSD was less than 10% Compared to the urrently available method, this new ly developed method had a high sensitivity, sele tivity, re overy rate and reliability It w as also simple and qui k to operat e and suit able for analyti al appli ations. Key words: A SE; GP C; gas hromatography; p-hydroxy benzoate; antisepti [