Skip to main content
. Author manuscript; available in PMC: 2018 Nov 1.
Published in final edited form as: Int J Mass Spectrom. 2017 Aug 24;422:42–50. doi: 10.1016/j.ijms.2017.08.004

Table 1. Comparison of the signals from different poly-atomic ions from a small intestine crypt.

The yields for CH−, OH− and C2H− were measured for various Entrance Slit (ES) and Aperture Slit (AS) combinations. The ExSlit width was 40 μm. The Mass Resolving Power exceeded 10000 (MRP definition from Cameca) for each of the ES and AS combinations shown. When available, slit configurations were similar to the published literature

Poly-atomic ion ES (μm) AS (μm) Counts/s
12CH− 10 80 4.5 × 103
12CH− 20 150 6.5 × 103
12C2H− 10 80 6.5 × 104
12C2H− 10 150 1.3 × 105
16OH− 10* 150* 3.4 × 103
*

slit configuration used in a study of inorganic samples[23].