Hi
I have solution that contain compound like inorganic acid , salt and additive ...
At the first I want to know about the chemical composition (chemical components) of this solution and at the second I want to know the percent of each components?
So,I ask you to recommend me technique and methods for analyzing this sample. In my perspective, it would be better at the first dry this solution then use it for analysis. Tell me about your opinion about this idea.
Best regards
mohamad
To quantify, you need to know what you are looking for and use a know amount of standard to determine using a suitable technique e.g. wet chemistry, chromatography, spectrophotometry. If you don't know what you have, you need to spend time to find out what you have, this is a very long process and need expertise and tools.
Dear Mohamad,
when you start from scratch, you may want to try TLC - thin layer chromatography. Reasons: Cheap, easy, fast and can serve your need from first qualitative orientation to quantitation. Works even at less privileged labs.
This may be a good point to get you started: http://www.camag.com/en/tlc_hptlc/what_is_tlchptlc.cfm
and here you can search fro applications for your compound of interest.
http://www.camag.com/en/tlc_hptlc/customer_magazine_cbs/ccbs_database.cfm
Hope, this helps!
Best regards
Holger
Hi Dear Holger,
At the first thank you for answer, but I try to dry my solution then use the powder for XRF analysis. I have two goal for analyzing of this solution:
1. I know the general component of this solution but I want to find the fraction of these component in my solution.
2. although, I know the general composition of my solution but in this solution use additive that i try to find it.
so with this additional information can give me more suggestion?
The best,
Mohamad
Dear Mohamad,
XRF would not be my first choice for this type of analysis in an already liquid solution. It is tricky to sample homogeneously and tricky to avoid subsampling since XRF will measure only one spot and the reflective properties of the analyte pellet will be critical. So if you nevertheless go for it, then I would suggest to create a calibration series of standard pellets that contains all your analytes in a matrix similar to your sample - in known amounts of course. A design of experiments may be helpful to find good compositions. For the calibration series, there should be independent replicates for the levels - which helps you to get an estimate of the error and of the distribution of errors (==> limits of detection, quantitation, ...)
Good luck & best regards
Holger
For inorganic species you can use AAS or ICP ... for organic components you can use HPLC or GC ... organic compounds have their own retention time and you can compare those retention time with standard retention time ...
Atomic absorption spectroscopy is useful for both qualitative and quantitative analysis deal with standard sample samples with known concentration However it is worth while to undertake qualitative analysis including dry and wet test as suggested by Vogel book After ascertaing the metal ions present you can go for Atomic absorption spectroscopy or Inductively coupled plasma atomic emission spectroscopy.
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