Well, the first two listed are quite vague, so #3 would be the best out of the choices listed...but perhaps you just said it best when you explained it to me: "Analytical Chemistry in Brasil."
"Analysis of Brasil" and "Analitics of Brasil" sounds like you are studying the country of Brasil. You want your title to give the reader an idea of what the paper is about.
I wouldn't sacrifice clarity for brevity. What you are really talking about is Analytical Chemistry in Brasil, right? If you cut out the "Chemistry" part, it becomes something totally different. Likewise, if you