How to remove the various forms of iron from lake waters?

I am encountering an error in FullProf stating "Some scattering coefficient not found" while attempting to assign Mo ions to specific ionic positions within the magnetic phase of a Sr2FeMoO6 perovskite structure. I m adding Fe ions such as MFE3 and Mo such as MMO5. problem is about Mo. how can I eliminate it

Zerovalent iron if synthesized in lab by reducing iron ions seems to be very unstable. It tends to form an oxide layer immediately as soon as the attempt of drying of the samples. Does anyone have any suggestions to folloz some precuation during reduction or drying to avoid immediate oxide formation?

Hi everyone.

A doubt from the scratch. I am working with a system to understand the effect of spin multiplicity. The system with Fe ion absorb the gas molecules at low spin multiplicity and not at high spin state for the same charge of Fe ion(+4). Why?

Thanks in advance

Hi everyone

(for the Fe(iii) solution im using 0.1g of Fe and 100 mL of distilled water)

[molecular weight = 55.845g / mol]) into micromole.

What is the right method to do it?

It is a venture in an ongoing research project

It is common to say that triethanolamine (TEA) has the potential to form a complex with different ions (Fe III, Al III, Ca II). Does someone know to which ion TEA has greater potential? How about diethanol isopropanolamine (DEIPA)? Many thanks in advance.

I synthesized a solution containing Cu2+ (0.5 g/l), Fe3+ (0.26 g/l) and Fe2+ (0.19 g/l) with hydrated sulphate salts and I followed iodometric method containing Starch solution (1 %wt), Na2S2O3 solution (0.1M), KSCN (1 g), KI (1 g) and NH3 and CH3COOH (at the first step of titration). Otherwise, I can’t reach the correct answer and I always calculate Cu concentration more than the 0.5 g/l. However, without Fe ions, I have reached to the answer only with 2% error. Additionally, the color of solution is completely different for these two conditions (Cu2+ with and without Fe ions). How can i measure Cu concentration at the presence of Fe ions?

I want to study the electrochemical reaction of Fe(II) and Fe(III) ions in their HF solution. Pt wire and sheet have been selected as the working electrode and counter electrode, respectivle. However, I donnot know what can be used as a stable reference electrode in the HF solution. Please provide some suggestions to me. Thank you.

Ion Exchange Resin (IER) is one of the most cost effective methods being used to purify a chemical compounds by removing the undesired impurities . for example Iron Fe(III) is the major impurity in sulphuric acid which comes mainly from the raw materials and storage tanks. Can Iron be removed from 98% concentrated sulphuric acid by using IER?