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报道了用激光微探针飞行时间质谱仪进行纸上样品分析的可行性.对纸上涂布的痕量罗丹明B(Rhodamine B)和罗丹明 6G(Rhodamine 6G)进行测试,结果表明纸上分析有极高的灵敏度(优于5×10~(-17)mol)和信噪比,纸纤维干扰峰少;采用液相基体在纸上进行四苯基卟啉(TPP)金属络合物分子量测定也取得良好效果;对纸上样品分析的基体选择进行了研究,表明液相基体明显优于固相基体.激光质谱对纸上有机物作高灵敏度直接测定为某些特殊分析应用如安全检查、刑事侦察和食品卫生检查等提供了新方法.
The feasibility of on-paper sample analysis with laser microprobe TOFMS was reported.The trace amounts of Rhodamine B and Rhodamine 6G coated on paper were tested and the results showed that on paper High sensitivity (better than 5 × 10 ~ (-17) mol) and signal-to-noise ratio were analyzed, and there were few interference peaks of paper fiber. Tetraphenylporphyrin (TPP) Molecular weight determination also achieved good results; substrate selection on the paper sample analysis was studied, indicating that the liquid phase matrix was significantly better than the solid matrix.Laser mass spectrometry paper organic matter for high sensitivity direct determination for some special analysis applications such as safety inspection , Criminal reconnaissance and food hygiene inspection provides a new method.