Fibre-optic evanescent sensing of gaseous ammonia with two forms of a new near-infrared dye in comparison to phenol red
Fibre-optic evanescent sensing of gaseous ammonia with two forms of a new near-infrared dye in comparison to phenol red
复制标题
与酚红相比，使用两种形式的新型近红外染料对气态氨进行光纤倏逝传感
DOI：
10.1016/s0925-4005(03)00019-4
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
F. Kvasnik
中科院分区：
文献类型：
--
作者：
E. Scorsone;S. Christie;K. Persaud;P. Simon;F. Kvasnik
我们报告了使用甲基化和乙基化形式的一种新的染料和比较其性能的指示染料酚红的倏逝检测气态氨。开发了两种形式的新染料，以在光谱的近红外区域产生光谱变化。每种染料都被固定在市售的塑料包层二氧化硅（PCS）纤维的包层材料中。对气态氨的响应在565 nm处为最大的酚红和735和744 nm的甲基化和乙基化形式的铜络合物，分别，和三个染料的校准曲线的调查表现出三个数量级的动态范围。虽然所有的传感纤维都表现出可逆的反应，氨，反应时间是缓慢的，需要改进。发现在0-50%RH范围内，大气湿度对铜络合物甲基化形式的影响可忽略不计。
We report the evanescent detection of gaseous ammonia using the methylated and ethylated forms of a new dye and comparing their performance to that of the indicator dye phenol red. The two forms of the new dye were developed to produce spectral changes in the near-infrared region of the spectrum. Each of the dyes have been immobilised into the cladding material of commercial available plastic-clad silica (PCS) fibre. The response to gaseous ammonia was maximum at 565nm for phenol red and 735 and 744nm for the methylated and ethylated forms of the copper complex, respectively, and the calibration curves for the three dyes investigated exhibit a dynamic range of three orders of magnitude. Although all sensing fibres showed reversible responses to ammonia, the responses times were slow and need improving. The effect of atmospheric moisture on the copper complex methylated form was found to be negligible in the range of 0–50%RH.