CAJ | 학술논문

建立了PET瓶中2种光稳定剂2-(2′-羟基-5′-甲基苯基)苯并三唑( UV-P)和2-(2-羟基-3′,5′-二枯基苯基) -苯并三唑( UV-234 )的高效液相色谱检测方法. 两种光稳定剂在质量浓度为0 .5μg/mL~20μg/mL的范围内线性良好,相关系数R>0 .99 ,加标浓度为2、4、10μg/mL的加标回收率为76.2%~111.7%,相对标准偏差为1.2%~11.7%,UV-P和UV-234的检出限分别为0.05μg/mL和0.07μg/mL,并用该方法对市售食品的PET瓶进行了检测. 最后根据欧盟法规使用50%( v/v)和95%( v/v)的乙醇以及异辛烷作为食品模拟物对PET样品瓶中2种光稳定剂的迁移进行了研究.
건립료PET병중2충광은정제2-(2′-간기-5′-갑기분기)분병삼서( UV-P)화2-(2-간기-3′,5′-이고기분기) -분병삼서( UV-234 )적고효액상색보검측방법. 량충광은정제재질량농도위0 .5μg/mL~20μg/mL적범위내선성량호,상관계수R>0 .99 ,가표농도위2、4、10μg/mL적가표회수솔위76.2%~111.7%,상대표준편차위1.2%~11.7%,UV-P화UV-234적검출한분별위0.05μg/mL화0.07μg/mL,병용해방법대시수식품적PET병진행료검측. 최후근거구맹법규사용50%( v/v)화95%( v/v)적을순이급이신완작위식품모의물대PET양품병중2충광은정제적천이진행료연구.
A method of high performance liquid chromatography ( HPLC ) was established for detecting light stabilizers 2-(2′-hydroxy-5′-methylphenyl) (UV-P) and 2-(2h-benzotriazol-2-yl)-4,6-bis(1-methyl-1-phenylethyl ) phenol ( UV-234 ) in PET bottles.The standard curves were linear in the range of 0.5~20 μg/mL and had a good linear relationship (R>0.99).Spiked at concentration of 2,4,10 μg/mL,the recoveries were 76.2% ~117.9% with RSD 1.2% ~11.7%.The limit of detection of UV-P and UV-234 were 0.05μg/mL and 0.07μg/mL.Then this method was applied to determine the two light stabilizers in PET bot-tles in the market.Finally,according to the EU regulations ,three kinds of food simulants including 50%(v/v) ethanol,95%(v/v) ethanol and isooctane were selected for the migration of light stabilizers from PET bottles.