Hey guys
I am a currently in the process of measuring the absorption of Vanadium in soils at different pH levels.
however the soil I have gathered seems to be rich in humic acid and the humic acid is interfering with the results. My dissertation tutor suggested
using Alum (Potassium Aluminium Sulfate) however the lab does not have any, I am worrying my experiment is going to be ruined and I am very much
running out of time at the moment. Is there any other tried and tested methods of precipitation humic acid from a solution??
Thanks in Advance
HarryMolecular Manipulations - 27-3-2015 at 12:16
Potassium hydroxide is the standard method of precipitating humic acid as potassium humate.
I'm not sure if potassium hydroxide ions would interfere with your' results though.
I am measuring the absorption of Vanadium in soils at different pH levels.
How do you mean "absorption of
vanadium in soils"? A specific mineral of V? Water soluble? aga - 27-3-2015 at 12:20
How are you measuring Vanadium absorbtion in soil samples ?
[Edited on 27-3-2015 by aga]Sulaiman - 27-3-2015 at 12:25
Alum is so easy to get,
Amazon, eBay, Asian food shops (ask for phitkari or saurashtri), Chinese herbalist (ming fan), spice section of supermarket, children's chemistry
sets, .......
[Edited on 27-3-2015 by Sulaiman]PHILOU Zrealone - 27-3-2015 at 14:17
K-Alum stone is also used as hemostatic for after shaving cuts...so in a cosmetic shop or a barber shop you may find some.
It is a mix of Al2(SO4)3 and K2SO4...so not hard to do.linharry456 - 28-3-2015 at 06:11
I am measuring the vanadium absorption using a uv-vis spectrometer so the humic acid is interfering with the results. It is all sorted now as I have
acquired some alum, fingers crossed it will not react with the vanadium which means I am back to square 1!
