表面等离子体激元共振光化学传感器的研究  

Studies on Surface Plasmon Resonace Sensor

作　　者：赵晓君[1,2] 王珍[1,2] 许汉英[1,2] 梁枫 张寒琦[1,2] 金钦汉[1,2] 

机构地区：[1]吉林大学化学系 [2]吉林商检局

出　　处：《高等学校化学学报》1998年第8期1214-1218,共5页Chemical Journal of Chinese Universities

摘　　要：自行设计并组装了一套全波长表面等离子体激元共振光化学传感器实验装置；研究了以银膜为基底的传感器的稳定性、可逆性及干扰情况；在５７５ｎｍ波长处，测定乙醇的灵敏度为４．６×１０－４折射率单位，ＲＳＤ≤１．４％，定量测定范围为０．５％～７０％．分析了一些实际样品，结果与标准方法的测定值相吻合．Based on surface plasmon resonance(SPR), a novel optical chemical sensor was developed. Traditionally SPR sensing method was to fix wavelength and modulate angle of incidence light, which needed an expensive and complicated apparatus. The device presented here is a relatively simple and inexpensive. It was designed on the basis of fixing angle of incidence light in the range of the wavelength of 400～800 nm. The reflected light intensity is the minimum at the resonant wavelength, a smaller increase in refractive index of the analyzed solution would cause a clear shift in the SPR reflection spectra toward larger resonant wavelength. The sensitivity to refractive index changes was found to be 4.6×10 -4 index of refraction units at a wavelength of 575 nm. Some sample were analyzed with the sensor. The results obtained are in good agreement with those obtained with other method. Under the selected experimental conditions, the sensor has a good repeatability(RSD≤1.4).

关 键 词：光化学传感器 乙醇 分析 SPR传感器 传感器 

分 类 号：O657.1[理学—分析化学] O623.411[理学—化学]