亚临界水萃取-高效液相色谱法测定聚碳酸酯水杯中双酚A和苯酚的迁移量

色谱 , 2013, 31(3): 254-259. doi: 10.3724/SP.J.1123.2012.10033

亚临界水萃取-高效液相色谱法测定聚碳酸酯水杯中双酚A和苯酚的迁移量

白玮玮 ^1, , 刘书慧 ^2, , 曹江平 ^3, , 范盈盈 ^4, , 解启龙 ^5,

1.西北农林科技大学理学院,陕西杨凌,712100

2.西北农林科技大学理学院,陕西杨凌,712100

3.西北农林科技大学理学院,陕西杨凌,712100

4.西北农林科技大学理学院,陕西杨凌,712100

5.西北农林科技大学理学院,陕西杨凌,712100

基金项目: 西北农林科技大学人才专项项目(Z111021005)

关键词：亚临界水萃取 , 高效液相色谱 , 双酚A , 苯酚 , 聚碳酸酯水杯

Simultaneous determination of the migrations of bisphenol A and phenol in polycarbonate bottles based on subcritical water extraction and high performance liquid chromatography

建立了亚临界水萃取-高效液相色谱同时测定聚碳酸酯(PC)水杯中双酚A和苯酚迁移量的方法.选择萃取温度120℃、萃取压力6.89 MPa(1 000 psi)、静态萃取时间1h、萃取1次对1 1种样品进行测定.双酚A的迁移量为6.81～ 11.16 μg/g.5种样品中未检出苯酚,其余样品中苯酚迁移量为3.25 ～ 6.08 μg/g.在优化的测定条件下,双酚A和苯酚在8 min内达到基线分离.双酚A和苯酚分别在0.05 ～ 20 mg/L和0.02 ～ 20 mg/L范围内线性关系良好,相关系数(r)均大于0.999 7,检出限分别为7.6μg/L和2.0 μg/L.日内及日间的重复性(以RSD计)分别小于5.21％及11.63％.传统的浸提法结果表明长时间浸提会使PC材料发生微弱水解.相比传统的浸提法,该方法的萃取效率提高了49～ 106倍.该方法简便、快速、环保,可用来测定PC水杯中双酚A和苯酚的迁移量.

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