What would be a newer more efficient method to do the qualitative analysis of an unknown. I am trying to find a good method and its greenness (Green chemistry) and say why it better than the common method used.

please help as soon as possible.

This is such an open ended question that I really don't know how to address it. Qualitative analysis for what? A complete qual scheme to replace the one most often used now (that is groups I through V). And does this include anions (they are done in groups I through V also). Surely you aren't talking about a complete qual scheme. That is a book, not a response on this board that can be done in 10 minutes.