18: Chemistry of the Environment Last updated Jun 23, 2019 Save as PDF 17.5: Qualitative Analysis 18.1: Earth’s Atmosphere Page ID55040 ( \newcommand{\kernel}{\mathrm{null}\,}\) Topic hierarchy18.1: Earth’s Atmospherefour regions, temperature profile, composition18.2: Outer Regions of Atmospherephotodissociation and photoionization processes that occur in the upper atmosphere18.3: Ozoneproduction in the atmosphere, photodissociation, depletion of ozone18.4: Chemistry of the Tropospheresulfur compounds, carbon monoxide, nitrogen oxides, carbon dioxide and climate change18.5: The World Oceanseawater composition, desalination18.6: Fresh Wateravailability, average consumption, water cycle, dissolved oxygen, water purification18.7: Green Chemistrytwelve principles, solvents and reagents, challenges