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- Posts: 15
- Joined: Tue Jan 14, 2014 7:41 pm
Would someone please verify my logic below?
I use a sodium salt to raise the pH of a citral solution from 2.8 to 4.2. I analyzed both samples on GCMS - static headspace. Looking at response of terpenes, the lower pH has a higher signal response than higher pH. Salt was used to raise the pH not for purposes of salting out. So I am looking to understand the effects individually.
1. The addition of salt should release more volatiles but this did not occur - response was greater win lower pH which had no salt.
2. The lower pH is less neutral therefore the volatiles can be carried easier into headspace - this did occur.
So the effects of pH on the release of terpene compounds into headspace are greater than the salting out effect. Does this make sense or have I missed some interactions?
Thanks.