[Hiroshoa]

So I'm currently working on a school experiment where I have to test the effect of temperature on the iodine content in seaweed; I know that I will be using a spectrophotometer to measure the change in iodine content, however I'm not exactly sure how I will do it... like I'm going to be using dried seaweed so how am I supposed to fit it in the cuvette of the spectrophotometer, (and also how am I supposed to measure the initial amount of iodine in the seaweed before cooking it)... therefore I would highly appreciate any suggestions or resources which can help me, and thank you

[Borek]

Are you tasked with designing the procedure, or are you expected to follow a known one? If the latter - do you access to the procedure description in any written form?

[Hiroshoa]

I'm expected to design the procedure, however I've never used a spectrophotometer in my entire life; and I have no idea how they work (like can I put solids like seaweed in them, or would it not be accurate?). I tried researching for resources online, but I was unable to find anything that I was able to comprehend; so I would really appreciate any help

[Borek]

Generally speaking spectrophotometer works only with solutions, so you need to convert your samples into a solution containing analyte (note: solution, not a suspension). That means some kind of digesting to either completely dissolve the seaweed or to at least extract the iodine so that you can filter the remains out.