| Caution!! Although I am happy to share my research notes below with all visitors to my webpages, these pages are mainly designed for my own use and subject to change without warning. I do not guarantee the correctness of all contents as well. 
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| Solar and interstellar abundances of some atoms and/or molecules (from Tab 1.3-1.6 of Duley & Williams, 1984inch.book.....D) Chemical abundances in several typical environments: Abundances of more known species in different sources. (up to 1984) The abundances are relative to H nuclei. Depletion is defined as Dx = log[N(X)/N(H)] - log[N(X)/N(H)]_sun. (same as above Tab 3) 
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