A method for improving the detection limits of a mass spectrometer

摘要

A method for improving the detection limits of a mass spectrometer comprising:(a) generating of sample ions of an ion source (20);(b) storing the sample ions in a first ion storage device (30);(c) injection of the stored ions in a ions selection in front of the direction (40), wherein the ions selection in front of the direction (40) is an electrostatic trap;(d) selecting of ions of a given mass - to - - ratio of the charge in the ion selection in front of the direction (40) and injection of the ions of the given mass - to - - of the charge ratio of the selection of the ions in the direction (40);(e) storing the selection of the ions in the direction (40) ejizierten ions in a second ion storage device (60), without this back through the ions selection in front of the direction (40) to conduct;(f) repeating the preceding steps (a) to (e) in the second ion storage device (60) to grow stored ions; and(g) transfer of the increased ions back to the first ion storage device (30) for the subsequent analysis, without this back through the ions selection in front of the direction (40) to conduct.