“如果低温检测器能够做到即使几个离子到达检测器也能给出信号,那么它就能解决测定大分子化合物(或者说难于离子化的样品)的问题。”
对的,低温检测器就能够做到这一点,我把原话写在下面:
"Since cryodetectors do not generate electronic noise, as few as 5 ions can be viewed as a statistically significiant signal."
"IgG (150kDa) is observed with good signal-to-noise at 1 fmol."
"Low femtomol sensitivity is observed for masses as high as 400 kDa (IgA)."