what's the wavelength of metal ions (such as Fe(II) , Co(II) , Mn(II)) in spectrophotometery?
How can i find them?
Look at the Google and asked for their electronegativity or their ionization energy values, which may give you the chance to estimate at least their photon emision wave length. E=(h * nu)!
In addition to the approach suggested above, you can obtain some information based on recommended analytical techniques. For instance, HACH has several suggested colorimetric/spectrophotometer methods for a variety of inorganics. In the approach, it lists what wavelength to use.
Thanks for your answers.
Dear Oğurtani i used your answer. Thank you
Dear Cutright thanks for your guidance.
Dear Najib the Instruments that you suggested was so useful. I wanted to use Uv-Visible Spectrophotometer but i found this Instrument can't detect Fe(II) and now i want to use ICP. thanks for your idea and guidance.
Dr. Najib was quite right about the method to be employed. For spectrophotometric analysis, you need to choose a ligand that will make complexes of exact formula (i.e. known metal: Ligand ratio) and construct a absorption spectrum to get the right wavelength of maximum absorption. Then you can construct a calibration graph to find the concentrations of your unknown samples. I recommend you to read the Book of Z. Marczenko "Separation and spectrophotometric determination of elements". You will find dozens of methods for your ions with various ligands and you may choose the one for which the materials are available in your lab. ..Good luck
Dear Hamta,
Please follow AOAC protocol, or FAO protocol these protocol are world wide accepted in any journal and all types of metals wave length u can get there so not mentioned any particular one.
Your in instrument also can tell you if you're using a relatively new (
Fe(III) forms a red complex with thiocyanate (SCN) and you can detect Fe(III) concentrations less than 1 ppm
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