2012
DOI: 10.1590/s0103-50532012005000036
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Development of nanoinjector devices for electrospray ionization - tandem mass spectrometry (ESI-MSn)

Abstract: Em espectrometria de massas (MS) no modo de ionização eletrospray (ESI), as amostras podem ser analisadas com um método prévio de separação (cromatografia líquida ou eletroforese capilar) ou por infusão direta da amostra. A injeção direta apresenta um grande benefício que é a redução do volume de amostra consumido e a possibilidade de amostragem contínua por um período estendido. Este maior tempo de amostragem possibilita a análise completa através de fragmentações sucessivas por espectrometria de massas, crít… Show more

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“…The experiments were performed in a sheathless capillary with a double layer of titanium=gold plating, also developed by our group. [29] The best digest separation condition was NACE: 60% methanol, 30% ACN, 10% acetic acid, and NH 4 Ac 12.5 mmol L À1 , E ¼ 350 V cm À1 . After generating the data, SEQUEST uses each peptide's mass to search the database by means of the virtual digestion Fig.…”
Section: Analytical Conditionsmentioning
confidence: 97%
“…The experiments were performed in a sheathless capillary with a double layer of titanium=gold plating, also developed by our group. [29] The best digest separation condition was NACE: 60% methanol, 30% ACN, 10% acetic acid, and NH 4 Ac 12.5 mmol L À1 , E ¼ 350 V cm À1 . After generating the data, SEQUEST uses each peptide's mass to search the database by means of the virtual digestion Fig.…”
Section: Analytical Conditionsmentioning
confidence: 97%