GC7990 塑料食品装材料中3种抗氧化剂残留量的测定气相色谱仪

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.

          滕州市翔鹰分析技术有限公司建立了GC7990气相色谱法测定塑料食品包装材料中抗氧化剂二丁基羟基甲苯 (BHT)、丁基羟基茴香醚(BHA) 和特丁基对苯二酚 (TBHQ) 残留量的分析方法。样品采用环己烷 – 乙酸乙酯混合溶剂超声萃取，经固相萃取法富集和净化，采用气相色谱进行测定。结果表明，3 种抗氧化剂质量浓度在0.05～20 mg／L 范围内线性关系良好，线性相关系数大于 0.999 ；BHT，BHA，TBHQ 的检出限分别为 0.005，0.01，0.03mg／kg ；平均添加回收率为 88.7%～104.0% ；测定结果的相对标准偏差小于 5.5%(n=6)。该方法操作简便，灵敏度高，重复性好，可用于塑料食品包装材料中抗氧化剂BHT，BHA，TBHQ 残留量的测定。