Fig. 4.

An illustration of the effect of water vapor in the bath gas on the ion formation from charged droplets of solution comprising anIII (A), anII (B), and a mixture of anII and anII (C). Electrospray solution of anII was at a concentration of 200 μM in a mixture of 93% methanol–7% water containing 0.1% acetic acid. The solution of anIII was also at a concentration of 200 μM but in 83% methanol–17% water containing 0.1% acetic acid solution. The admixture solution was composed of 266 μM anII and 133 μM anIII in 90% methanol–10% water solution doped with 1% acetic acid.