I'd like to know the best databases available, so I can know the best appropriate method of separation, analysis, quantification with regard to chemical identities?
Dear Sir. Concerning your issue about the best resources/databases/websites for analytical chemistry. Analytical techniques providing more information, in particular molecular spectrometry, are preferred for identification. Other techniques are just briefly considered, with for the exception of chromatography, whose combination with spectrometric techniques sharply increases possibilities and trueness of identification. As a whole, mass spectrometry is superior to other spectral techniques in such features as sensitivity, selectivity, generation possibility of molecular mass/ formula, and combinability with chromatography. Different types of mass spectrometric instruments are outlined, with many performances tabulated. Experimental conditions for identification of volatile, non-volatile, and high-molecule compounds are discussed. Next, classification of chemical methodologies is given where screening and confirmatory methods are noted. Related procedures, sample treatment, and quantitative determination are also considered as ones affecting qualitative analysis. I think the following below links and the attached file may help you in your analysis:
https://en.wikibooks.org/wiki/Chemical_Information_Sources/Analytical_Chemistry_Searches
https://www.hindawi.com/journals/isrn/2012/801607/
https://ac.els-cdn.com/S1878535213001056/1-s2.0-S1878535213001056-main.pdf?_tid=b8cc0342-eaca-11e7-9ea2-00000aab0f02&acdnat=1514354386_a02f9f988ef0b01f5dea4f02d44431dc
https://www.ncbi.nlm.nih.gov/books/NBK218064/pdf/Bookshelf_NBK218064.pdf
Thanks
The US NIST webbook is an indispensable resource:
http://webbook.nist.gov/chemistry/
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