Su xiang eagle analysis technology co., LTD. Established GC7990 gas chromatography determination of antioxidant in plastic food packaging materials dibutyl hydroxy toluene (butylated hydroxytoluene), butyl hydroxy anisol (BHA) and TBHQ (TBHQ) residue analysis method. Samples using cyclohexane - ethyl acetate mixed solvent ultrasonic extraction, the enrichment of solid phase extraction and purification, using gas chromatography to determine. The results show that the three kinds of antioxidants mass concentration in the range of 0.05 ~ 20 mg/L inside sex is good, the linear correlation coefficient greater than 0.999; Butylated hydroxytoluene, BHA, TBHQ detection limit were 0.005, 0.01, 0.03 mg/kg. The average add recovery is 88.7% ~ 88.7%; The determination results, the relative standard deviation less than 5.5% (n = 6). The method is simple, high sensitivity, good repeatability, can be used for plastic food packaging materials in antioxidant butylated hydroxytoluene, BHA, TBHQ residues determination.

          滕州市翔鷹分析技術(shù)有限公司建立了GC7990氣相色譜法測定塑料食品包裝材料中抗氧化劑二丁基羥基甲苯 (BHT)、丁基羥基茴香醚(BHA) 和特丁基對苯二酚 (TBHQ) 殘留量的分析方法。樣品采用環(huán)己烷 – 乙酸乙酯混合溶劑超聲萃取，經(jīng)固相萃取法富集和凈化，采用氣相色譜進(jìn)行測定。結(jié)果表明，3 種抗氧化劑質(zhì)量濃度在0.05～20 mg／L 范圍內(nèi)線性關(guān)系良好，線性相關(guān)系數(shù)大于 0.999 ；BHT，BHA，TBHQ 的檢出限分別為 0.005，0.01，0.03mg／kg ；平均添加回收率為 88.7%～104.0% ；測定結(jié)果的相對標(biāo)準(zhǔn)偏差小于 5.5%(n=6)。該方法操作簡便，靈敏度高，重復(fù)性好，可用于塑料食品包裝材料中抗氧化劑BHT，BHA，TBHQ 殘留量的測定。