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The concentration−sensitivity of a MALDI−TOF−MS instrument is traditionally tested by diluting the analyte to the threshold of detection, and measuring the signal to noise ratio (SNR) for the diluted material. Unfortunately, such an experiment measures both the performance of the instrument and the error involved with sample preparation. For example, peptides can stick to dilution containers so reducing the amount of material free in solution and available for analysis.
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用新型辉光放电质谱仪测定高纯金属——记忆效应研究
meinhard
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