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- Posts: 481
- Joined: Fri Jun 02, 2017 11:10 pm
- Location: Western Colorado
I am starting to use it as 'soil' matrix for 8260-VOC and 8015-DRO method blanks.
My bottle has a pretty big spike that elutes just beyond the o-terphenyl peak on my HP-5ms column and it amounts to about 15 ppm. This is ruining my DRO by FID detection limit. Baking out a peak that heavy would require a furnace which I don't have.
Does anybody else see this peak?
Fisher offers another quartz sand, Fisher#AC370940050 40-100 mesh. But I do not know how clean this sand might be for use in method blanks.
Reporting back on this issue...
I've soxlet extracted the Ottowa Sand with 1:1 hexane:acetone. This completely removed the extra peak next to the o-terphenyl.