Enhancing the Performance of Two Different Commercial CO2 Indicators Using Digital Colourimetric Analysis, DCA
Enhancing the Performance of Two Different Commercial CO2 Indicators Using Digital Colourimetric Analysis, DCA
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DOI：
10.3390/chemosensors10120544
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发表时间：
2022-12-01
期刊：
影响因子：
4.2
通讯作者：
Mills, Andrew
中科院分区：
文献类型：
--
作者：
McDonnell, Lauren;Yusufu, Dilidaer;Mills, Andrew
实验室制造了两种不同的商用二氧化碳比色指示器，一种是基于溶液中用于监测水族箱中溶解二氧化碳水平的指示器，即液滴检查指示器，另一种基于墨水，用于监测呼气中的二氧化碳水平(二氧化碳测定仪)，即正确的气管放置指示器。选定的商业指标目前在它们提供的分析信息(定性)方面受到限制，因为它们通常是用眼睛来评估的。因此，在每一种情况下，对于实验室制造的指示器和商业指示器，都使用彩色摄影和数字图像分析，即数字颜色分析(DCA)，将来自指示器的颜色数据转换为二氧化碳的定量测量，从而显著提高原始指示器提供的分析信息的质量。这是首次将这两个指标作为一个定量分析系统进行研究。实验室制造的每个指示器的二氧化碳敏感性都被发现与其商业对应指标的二氧化碳敏感性很好地匹配。提供了一个简单的程序来帮助非专家和专家以这种方式应用DCA。简要讨论了DCA提高其他商业指标表现的潜力。
Two different, commercial colourimetric CO2 indicators are made in the lab, namely one based on an indicator in solution for monitoring the level of dissolved CO2 in an aquarium, i.e., a drop check indicator, and another based on an ink, for monitoring the level of CO2 in breath (capnography), i.e., a correct tracheal placement indicator. The selected commercial indicators are limited currently in terms of the analytical information they provide (qualitative) as they are normally assessed by eye. Thus, in each case, for both the lab-made and commercial indicators, colour photography coupled with digital image analysis, i.e., digital colour analysis (DCA), is used to convert the colour data from the indicator into a quantitative measure of CO2 and so markedly improve the quality of the analytical information provided by original indicator. This is the first time either indicator has been studied as a quantitative analytical system. The CO2 sensitivity of each of the lab-made indicators is found to match well that of its commercial counterpart. A simple program is provided to help non-experts and experts alike to apply DCA in this way. The potential of DCA to enhance the performance of other commercial indicators is discussed briefly.