Seperating out iron from ferrous sulfate I don't need to necessarily seperate pure iron, but from a ferrous sulfate solution, I am trying to form a precipitate with iron. By getting a precipitation of an iron compound, I can find out the amount of iron in the solution. Any help would be appreciated. I'm completely new and tried finding information online but all of it was beyond my comprehension. I apologise for my ignorance, but help would really be great.
Decomposing ferrous sulfate to get iron(III) oxide should work:
$$\ce{2FeSO4 -&gt;[\Delta] Fe2O3 + SO2 ^ + SO3 ^}$$
Iron content can be measured from iron(III) oxide. Commercially, iron is recovered from waste ferrous sulfate in the form of magnetite ($\ce{Fe2O3}$) by co-precipitation and magnetic separation$\ce{^{[1,2]}}$. Iron content is measured from magnetite. It was observed that after processing the magnetite, the grade of iron in magnetite concentrate increased from 62.05% to 65.58% and the recovery rate of iron decreased from 85.35% to 80.35%.
References

Wang YU, Ying-lin PENG, Ya-jie ZHENG Recovery of iron from waste
ferrous sulphate by co-precipitation and magnetic separation,
Transactions of Nonferrous Metals Society of China, Volume 27, Issue
1, January 2017, Pages 211-219, DOI: https://doi.org/10.1016/S1003-6326(17)60024-4

Yu, W., Peng, Y. &amp; Zheng, Y. Effect of purification pretreatment on the recovery of magnetite from waste ferrous sulfate. Int J Miner Metall Mater 23, 891–897 (2016), DOI: https://doi.org/10.1007/s12613-016-1304-2