I would appreciate a detailed answer as I really need it urgently.
Actually, I want to quantify Total Petroleum Hydrocarbon (TPH) from the foreshore sand (different stations with different source of organic pollution). I have tried to search previously asked questions as well as literature but have a few queries actually.
1. Is it ok to air dry the foreshore sand and then follow soxhlet extraction? If no, what could be the best way not to lose some volatile compounds?
2. After having chromatogram, how can I quantify the amount in each station? I guess internal standard will be used - but what could be the internal standard for TPH measurement? Please note I don't want to measure any single specific compound like benzene etc.
3. What formula should I use for the quantification?
PS: I would be thankful if somebody provide me GC/FID profile details like injection temperature, gas flow, etc etc.
Thanking you in anticipation.
Gas Chromatograph column with a FID detector to quantify the concentration of hydrocarbons.. file:///Users/drdelgado/Downloads/3249-12503-1-PB.pdf
Te recomiendo que revises este método y el archivo adjunto:
http://thescipub.com/PDF/ajessp.2012.396.402.pdf
for sample preparation, i would advice you to use freeze-dryer as its the safest way to preserve all compounds in your samples.
2- for the other questions please follow the link below., it might help
http://www.hindawi.com/journals/aess/2012/751956/
You can try with Static Head Space coupled with FID. This is the easy way to Quantify PAH
USEPA 8015, GRO/DRO. Found in USEPA manual SW-846. www.usepa.gov
An alternative is Texas TX-1005. www.tceq.state.tx.us
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