give brief details of alternative analytical methode for magensium in seawater sample(atomic absorption spectr

Question

spectroscopy)

Answer 1

how much water do you have to sample?Qualitative or quantitative analysis?
You could use a mass spectrophotometer.
AAS is a good method but sodium has a tendancy to cause interference so you might need to remove it first.
I doubt Zeeman AAS techniques would help much than std AAS.
If you could get access to large scale desalination equipment you could literally dry out the salts,separate them through various simple wet chemical reactions, then weigh them.Bucket chemistry- you can't beat it!

You could also use a biological approach and use some bacteria or plant that ingests magnesium but not sodium and separate it out that way but good luck finding one that specific.

Alternatively, "electroplate" out the metal from the seawater (again you will need a fair sized sample), separate it from the other metals present in seawater by std wet chemical methods,and weigh it!burn it and observe the type of flame and residue.Get your old school chemistry text books out!

Answer 2

atomic emission spectroscopy...simple and cheap