Research of measurement errors caused by salt solution temperature drift in surface plasmon resonanc

来源 :Chinese Optics Letters | 被引量 : 0次 | 上传用户:youthboy
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Influence of temperature on measurement of surface plasmon resonance (SPR) sensor was investigated. Samples with various concentrations of NaCl were tested at different temperatures. It was shown that if the affection of temperature could be neglected, measurement precision of salt solution was 0.028 wt.-%. But measurement error of salinity ca,used by temperature was 0.53 wt.-% in average when the temperature drift was 1 ℃. To reduce the error, a double-cell SPR sensor with salt solution and distilled water flowing respectively and at the same temperature was implemented. Influence of temperature on measurement of surface plasmon resonance (SPR) sensor was investigated. Samples with various concentrations of NaCl were tested at different temperatures. It was shown that if the affection of temperature could be neglected, measurement precision of salt solution was 0.028 wt. -%. But measurement error of salinity ca, used by temperature was 0.53 wt .-% in average when the temperature drift was 1 ° C. To reduce the error, a double-cell SPR sensor with salt solution and distilled water transported respectively and at the same temperature was implemented.
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