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机构地区:[1]上海市质量监督检验技术研究院,上海200233
出 处:《中国造纸》2013年第3期30-34,共5页China Pulp & Paper
摘 要:使用液相色谱-串联质谱(LC-MS)的方法测试了市面的爆米花桶中荧光增白剂的种类和含量,实验选用VBL、APC、SPP、APH 4种荧光增白剂作为目标化合物,在信噪比为10(S/N=10)的条件下,4种荧光增白剂的检出限均小于10 ng/mL,相对标准偏差(RSD)<10%。实验初步表明,本次上海地区含荧光增白剂的爆米花桶中添加的荧光增白剂均为APC,可迁移量从0.653 mg/kg到23.166 mg/kg不等。该方法可以有效分离荧光增白剂,并对其进行定性定量判定。This experiment use liquid chromatography-tandem mass spectrometry (LC-MS) to test the type and content of the fluorescent sub- stance in the popcorn cups in the market. VBL, APC, SPP, APH four fluorescent brighteners were identified as the target compound. 10 times of the signal-to-noise ratio was used to confirm the detection limit, and all fluorescent brighteners' limits were less than l0 ng/mL, the method precision (RSD) was 〈 10%. It proved that the fluorescent substances added in the examined popcorn cups were APC. The migra- tion amounts ranged from 0. 653 mg/kg to 23. 166 mg/kg. The method can effectively separate the fluorescent substance and further be de- fined qualitatively and quantitatively.
关 键 词:液相色谱-串联质谱法 荧光增白剂 爆米花桶 迁移
分 类 号:TS206.4[轻工技术与工程—食品科学] O657.63[轻工技术与工程—食品科学与工程]
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