采用新型傅里叶变换表面等离子体共振仪(FT-SPR),测定了NaCl、KCl和乙醇3种水溶液在不同浓度下的SPR响应值,建立了SPR响应与溶液浓度和折射率之间的定量关系R=1.53×105(n -1.3333),测定了FT-SPR 100型仪器的折射率响应常数m=1.53×105,即液体折射率每变化0.000 1,FT-SPR响应值变化为15 cm-1.其结果为用FT-SPR直接测定液体样品的折射率提供了可能.
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