Chai WG, Yan L, Wang GH, Liang XY, Zhao YF, Ji GJ. Improvement in sensitivity of fast atom bombardment mass spectrometry of amino acids by di-isopropylphosphorylation.
BIOMEDICAL & ENVIRONMENTAL MASS SPECTROMETRY 1987;
14:331-3. [PMID:
2959340 DOI:
10.1002/bms.1200140706]
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Abstract
Positive ion fast atom bombardment mass spectrometric sensitivities of seven amino acids and the corresponding di-isopropylphosphorylated derivatives were carefully compared. Results showed that an improvement in sensitivity by factors of 4-29, mostly above 10, were achieved after the derivatization. The chemical noise derived from glycerol matrix was also greatly reduced by this derivatization.
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