目的 建立油墨中光引发剂的检测方法，从源头控制食品包装的安全。方法 油墨样品经乙酸乙酯和乙腈超声提取，体积分数为20%的乙腈溶液定容，固相萃取柱萃取后用乙腈定容，使用液相色谱进行测定。结果 11种成分在各自范围内线性关系良好(R≥0.999 5)，平均加样回收率为90.0%~95.0%，相对标准偏差(n=6)小于3.5%。结论 建立了液相色谱同时测定油墨中2-甲基-1-(4-甲基硫代苯基)-2-(4-吗啉基)-1-丙酮、1-羟基环己基苯基酮、2-苯甲酰基苯甲酸甲酯、4-二甲氨基苯甲酸乙酯、4,4'-二(N,N-二甲氨基)二苯甲酮、安息香双甲醚、4-甲基二苯甲酮、4,4'-二(N,N-二乙氨基)二苯甲酮、对二甲氨基苯甲酸异辛酯、2-异丙基硫杂蒽酮、2,4-二乙基噻唑酮的方法。

The work aims to establish a detection method of photoinitiator in ink to control the safety of food packaging from the source. The ink samples were extracted by ultrasonic with ethyl acetate and acetonitrile and subject to constant volume by the acetonitrile solution with a volume fraction of 20%. After extracted by solid phase extraction column, the samples were subject to constant volume with acetonitrile and determined by HPLC. The 11 components had good linear relationship within their respective ranges (R≥0.999 5), the average recovery rate of sample addition was 90.0%~95.0%, and the relative standard deviation (n=6) was less than 3.5%. A method is established, which can be used for the simultaneous determination of 2-methyl-1-(4-methylthiophenyl)-2-(4-morpholinyl)-1-acetone, 1-hydroxycyclohexylphenyl ketone, 2-benzoylbenzoate methyl ester, 4-dimethylaminobenzoate ethyl ester, 4,4'-bis (N, N-dimethylamino) benzophenone, benzoin dimethyl ether, 4-methylbenzophenone, 4,4'-bis (N,N-diethylamino) benzophenone, isooctyl p-dimethylaminobenzoate, 2-isopropylthioxanthone and 2,4-diethylthiazolidone in the ink.