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目的了解邻苯二甲酸酯类的存在范围和分布情况,从而对塑化剂的来源分析及后续实验做出初步分析判断。方法建立不同食品中检测17种邻苯二甲酸酯类的气相色谱-质谱法(GC-MS),通过2015年对湖南省内企业生产的酒、香精、油、乳制品、奶粉、方便面、糖果7大类500余批次样品进行风险监测。结果在16种邻苯二甲酸酯类浓度为0.02μg/ml~0.1μg/ml以及DINP浓度为0.02μg/ml~1.0μg/ml时,线性关系良好,相关系数(r)均>0.99。以信噪比S/N=10确定16种PAEs的定量下限为0.05 mg/kg~1.5 mg/kg。当添加浓度分别为0.2 mg/L及2 mg/L时,除DMP、DEP、DMEP、DEEP外,均可获得比较满意的回收率。结论酒和油是检出塑化剂最常见的2种食品种类,DBP和DEHP是所检食品中易呈阳性的邻苯二甲酸酯类,酒类中DBP的检出有可能与生产工艺有紧密联系,有待下一步实验验证。
OBJECTIVE To understand the existence and distribution of phthalates, and to make a preliminary analysis of the source of plasticizers and subsequent experiments. Methods Gas chromatography-mass spectrometry (GC-MS) was developed to detect 17 kinds of phthalates in different foodstuffs. By 2015, alcohol, flavors, oils, dairy products, milk powder, instant noodles, More than 500 batches of samples in 7 major categories were monitored for risk. Results The linearity was good with 16 phthalates at 0.02μg / ml ~ 0.1μg / ml and DINP concentrations at 0.02μg / ml ~ 1.0μg / ml with the correlation coefficients (r)> 0.99. The lower limit of quantification of 16 PAEs was 0.05 mg / kg ~ 1.5 mg / kg with S / N = 10. When the concentrations of 0.2 mg / L and 2 mg / L were added respectively, satisfactory recoveries were obtained except DMP, DEP, DMEP and DEEP. Conclusions Wine and oil are the two most commonly detected plasticizers. DBP and DEHP are the most readily available phthalates in the foods tested. The detection of DBP in alcoholic beverages may be related to the production process Close contact, to be verified next experiment.