Table 1.

MS conditions.

Single quadruple MS conditions
Ionization interface	Electrospray Ionization (ESI), positive mode
Sheathe gas pressure	40 psi
Aux gas pressure	4 psi
Sweep gas pressure	0.2 psi
Source voltage	3000 V
Vaporizer temp.	250 °C
Ion transfer tube temp.	250 °C
Chrom. Filter peak width	Off
Advance Scan mode
Scan name	Mass list	Scan Time (s)	SIM width (amu)	Ion Polarity	Source CID voltage (V)
Dimethylamine	46	0.5	0.5	Positive	10
Ethylamine	46	0.5	0.5	Positive	10