sodium-acetate--anhydrous and 2-5-dihydroxybenzoic-acid

sodium-acetate--anhydrous has been researched along with 2-5-dihydroxybenzoic-acid* in 1 studies

Other Studies

1 other study(ies) available for sodium-acetate--anhydrous and 2-5-dihydroxybenzoic-acid

Article	Year
Strategies for the analysis of poly(methacrylic acid) by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. Journal of the American Society for Mass Spectrometry, 2007, Volume: 18, Issue:8 We evaluated several aqueous-based sample preparation protocols for the analysis of poly(methacrylic acid) (PMAA) by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOFMS). The sample contained a pentaerythritol tetra(3-mercaptopropionate) end-group, and was characterized in positive and negative ion modes using 2,5-dihydroxybenzoic acid (DHB) and 2,4,6-trihydroxyacetophenone (THAP) matrices. The major series observed were the [M + Na](+) species, in positive ion mode, and the [M - H](-) species, in negative ion mode. The performance of DHB and THAP matrices was comparable in positive ion mode, but THAP outperformed DHB in negative ion mode. The use of ion-exchange beads (IXB) benefited the analysis, while the addition of sodium acetate (NaOAc) or trifluoroacetic acid (TFA) proved disadvantageous in positive ion mode. Topics: Acetophenones; Gentisates; Molecular Structure; Polymethacrylic Acids; Sodium Acetate; Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization; Trifluoroacetic Acid	2007

Article

Year

Strategies for the analysis of poly(methacrylic acid) by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry.

Journal of the American Society for Mass Spectrometry, 2007, Volume: 18, Issue:8

We evaluated several aqueous-based sample preparation protocols for the analysis of poly(methacrylic acid) (PMAA) by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOFMS). The sample contained a pentaerythritol tetra(3-mercaptopropionate) end-group, and was characterized in positive and negative ion modes using 2,5-dihydroxybenzoic acid (DHB) and 2,4,6-trihydroxyacetophenone (THAP) matrices. The major series observed were the [M + Na](+) species, in positive ion mode, and the [M - H](-) species, in negative ion mode. The performance of DHB and THAP matrices was comparable in positive ion mode, but THAP outperformed DHB in negative ion mode. The use of ion-exchange beads (IXB) benefited the analysis, while the addition of sodium acetate (NaOAc) or trifluoroacetic acid (TFA) proved disadvantageous in positive ion mode.

Topics: Acetophenones; Gentisates; Molecular Structure; Polymethacrylic Acids; Sodium Acetate; Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization; Trifluoroacetic Acid

2007