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Orbitrap_SciLib
Reputable Mentor II
Reputable Mentor II
Wong RL, Xin B, Olah T.
Bioanalysis. 2011 Apr;3(8):863-71.
BACKGROUND: Orbitrap™ mass spectrometry has made significant impacts in the qualitative field of mass spectrometry, and it can be a potentially powerful quantitative technique. Because the Orbitrap is a relatively new platform, our understanding of this technology is not as well-versed as other mass spectrometric techniques. RESULTS: An investigation of the optimal acquisition parameters for quantitation was conducted for propranolol, reserpine, leucine enkephalin and neurotensin from mouse plasma samples. The lower limits of quantitation were demonstrated to be 1-3 nM while the quantitation linear dynamic range extends to four orders of magnitude. This level of performance is sufficient for most bioanalytical applications in drug discovery. CONCLUSION: Increasing the ion population in the Orbitrap improves detection and lowers the limit of quantitation, but the upper limit of quantitation can suffer. A better understanding of the operating parameters will help guide us toward better experimental designs and the best conditions for quantitation.

http://www.future-science.com/doi/abs/10.4155/bio.11.37
Bioanalytical Research, Research & Development, Bristol-Myers Squibb, 311 Pennington-Rocky Hill Road, Pennington, NJ 08534, USA.
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