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目的了解市售纸质食品包装材料中荧光增白剂的分布情况。方法从福州、漳州等地的超市、农贸市场、批发市场等地采集纸质食品包装材料,用40%乙腈水溶液提取,采用高效液相色谱法,梯度洗脱分离,荧光检测器检测。结果11种荧光增白剂在0.025~1.0 mg/L时,线性关系良好,相关系数均大于0.999,检出限为0.12~0.24 mg/kg。75份样品中共检出阳性样品26份,检出率为34.7%;共检出8种荧光增白剂,并且有多份样品同时检出多种荧光增白剂的情况。结论纸质食品包装材料存在违法添加使用荧光增白剂的情况,和往年监测情况对比没有减少的趋势。有关部门应加强监督管理,规范市场。
Objective To understand the distribution of optical brighteners in commercially available paper food packaging materials. Methods Paper food packaging materials were collected from supermarkets, farmers’ markets and wholesale markets in Fuzhou and Zhangzhou, etc, extracted with 40% acetonitrile aqueous solution, and separated by high performance liquid chromatography with gradient elution and detected by fluorescence detector. Results The results showed that the linearity of 11 fluorescent whitening agents was good at the range of 0.025-1.0 mg / L with the correlation coefficients greater than 0.999 and the detection limits of 0.12-0.24 mg / kg. A total of 26 positive samples were detected in 75 samples with a detection rate of 34.7%. A total of 8 fluorescent brighteners were detected and several fluorescent brighteners were detected at the same time. Conclusion There is an illegitimate use of fluorescent whitening agent in paper food packaging materials, which shows no decrease compared with previous years. Relevant departments should strengthen supervision and management, standardize the market.