spectrophotometer stuff
getting my new toy is pretty exciting, though. it's just a student instrument but still, it opens some doors. trying to decide what might be some good easy stuff to try out first
might need to get some supporting equipment first, come to think of it. but I can at least try the machine out with some stuff I already have
I once did spectrophotometric determination of iron(III) as the reddish salicylate complex because salicylic acid was easy to obtain
spectrophotometer stuff
trying to work out color-reaction methods for calcium and magnesium would be cool because then that gets me an easy way to estimate water hardness. I did find a mention about using rhodizonic acid for estimation of calcium, and there's gotta be others
found an _indirect_ method based on precipitating calcium as oxalate, then gauging its oxidation by potassium permanganate. cute, but not exactly simple
