Department of Pure & Applied Chemistry, University of Strathclyde, Glasgow, UK G1 1XL.
Analyst. 2010 Aug;135(8):1912-7. doi: 10.1039/c000688b. Epub 2010 Jun 9.
Water-based colourimetric indicator films are shown to have increased operational lifetimes under ambient conditions compared to similar solvent-based counterparts. The response and sensitivity characteristics of a water-based, carbon dioxide-responsive ink are characterised and compared and contrasted to those of a similar solvent-based indicator. The changes in the response characteristics of the ink as a function of the amount of base (sodium hydrogen carbonate) and plasticizer (glycerol) contained in the ink are reported, as are the effects of varying ambient temperature and humidity. The ink is incorporated into a felt tip pen and applied to a number of different substrates, producing a distinct, reversible colour change on all tested surfaces, when a sufficient level of carbon dioxide is present. The possible application of the indicator is discussed briefly.
与类似的溶剂型指示剂相比，水基比色指示剂薄膜在环境条件下具有更长的使用寿命。本文对一种水基、二氧化碳响应型油墨的响应和灵敏度特性进行了表征，并与类似溶剂型指示剂进行了比较和对比。报道了油墨中包含的碱（碳酸氢钠）和增塑剂（甘油）的量对油墨响应特性的变化，以及环境温度和湿度变化的影响。将油墨装入纤维笔尖笔中，并施加到许多不同的基底上，当存在足够水平的二氧化碳时，在所有测试表面上产生明显的、可逆的颜色变化。简要讨论了该指示剂的可能应用。
