Computational Chemistry and Chemometrics: From the Early Days
Palestrante: Prof. Dr. Roy Edward Bruns (IQ – UNICAMP)
Resumo: The word “chemometrics” started being used in the early 1970s to describe work being carried out combining digital measurement techniques and main frame computing. This was done far from the chemistry laboratory in mathematics, statistics and engineering laboratories as well as in centralized computer centers. Computer programming was time-consuming, as demand outstripped usage, limiting the user to one modest calculation job a day at university computer centers. The chemometrician in the 1980s started using microcomputers that had become available but had no commercial software. He wrote his own computer programs that worked on his microcomputer but probably not on microcomputers of his colleagues. The chemometric literature was almost nonexistent. In fact, the classic statistical experimental design book “Statistics for Experimenters” by Box, Hunter and Hunter was published only in 1978. Chemometrics courses in multivariate analysis and experimental design started being introduced in Brazil in the 1980s. Computer standardization (introduction of IBM PC) at this time permitted the introduction of commercial computer programs in the 1990s while microcomputers clandestinely entered chemistry laboratories attached to analytical measurement instruments. No field in science is complete without its own literature which started in Portuguese in the 1990s with the publication of “Planejamento e Otimização de Experimentos”. This text was accompanied by a computer floppy disc containing free DOE software. Later, several texts on experimental design were published as well as one on multivariate analysis. So far, this century has observed a dramatic increase in chemometric activities in Brazil spurred on by the occurrence of fifteen “Workshops de Quimiometria” and seven “Escolas de Inverno de Quimometria. These events permit discussions of chemometrics research leading to an ever-increasing number of scientific publications produced by Brazilian researchers.