I have a calibration curve for methyl salicylate (MeS) from Gas Chromatography (GC).
Calibration curve point taken into account are 1ppm , 10ppm, 100ppm vs. respective area from GC .
I am trying to bubble MeS gas into impinger in known solution at known amount of quantity.
From this solution I can get area from GC.
Question is how I can calculate concentration of MeS bubbled in inpinger.
Points to be noted:
1) MeS used for calibration is in liquid state
2) Concentration of MeS stream to be calculated is in vapor phase
3) Molecular weight of MeS 152.1494 g/mol
4) Same solution used as a solvent for preparing calibration curve and solvent in impinge
Things I can’t Do: Considering weight of impinge before and after bubbling (too many removable parts )
Some Reference:
1ppm = 0.001gm/Lit = 1mg/L
10ppm = 0.01gm/Lit = 10mg/L
100ppm = 0.1gm/Lit = 100mg/L
Below conversion useful if quantity is in gases state
The conversion equation is based on 25 ºC and 1 atmosphere:
X ppm = (Y mg/m3)(24.45)/(molecular weight)


Pls Help !!
Thank you in advance

Hi everybody

I've recently read in a paper that phenylboronic acid might react with DCC, and therefore has to be protected when doing an amide bond formation. Any further explanation, it seems awkward to me ?

Best

rp