A Rapid and Sensitive Method for Dimethylsulphide Analysis in Brazilian Sugar Cane Sugar Spirits and Other Distilled Beverages
نویسندگان
چکیده
O acoplamento do extrator por “purge and trap” com a cromatografia gasosa foi utilizado para quantificar o dimetilssulfeto em bebidas alcoólicas. Muito boa performance foi obtida usando-se uma coluna HP-FFAP e um detector seletivo de massas operando em modo SIM (m/z 62): limite de detecção de 8 x 10 mol L; boa repetibilidade e tempo total de análise de 25 minutos. O método foi aplicado em 60 amostras de bebidas alcoólicas (cachaça, tiquira, grapa, uísque, brandy, vodca, rum e uma tequila). As amostras de cachaças exibiram a maior concentração de dimetilssulfeto (mediana de 3.16 x 10 mol L) seguidas pelas amostras de grapa (mediana de 1.45 x 10 mol L). Não foi observada a presença de dimetilssulfeto nas amostras de rum analisadas.
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