ISSN 0003-2654 Analyst Interdisciplinary detection science 0003-2654(2010)135:8;1-H CRITICAL REVIEW Xiaogang Liu et al. Upconversion nanoparticles in biological labeling, imaging, and therapy HOT ARTICLE Andrew Mills and Graham A. Skinner Water-based colourimetric optical indicators for the detection of carbon dioxide www.rsc.org/analyst Volume 135 | Number 8 | August 2010 | Pages 1797–2160 Downloaded by Dalian University of Technology on 08 January 2011 Published on 18 May 2010 on http://pubs.rsc.org | doi:10.1039/C0AN00144A View Online