Choose (one to one matches) the best \"tool for the job\" for each of the measur

Question

Choose (one to one matches) the best "tool for the job" for each of the measurements identified below and give a short explanation of your choice. Be sure to comment on the relevant figures of merit and also to weigh practical issues like cost and size. Instruments (use each only once) An ICP/MS with liquid sample introduction. A graphite furnace (ETV) atomic absorption spectrometer. An LC with fluorescence detection Measurement Situations (pair each with only one instrument) A.) A quantitative determination of a mixture of fluorinated isomers of (-C_24F_n H_n - 12 - is basically 7 benzene rings fused together) emitted by a chemical company. B.) Screening for and assay of heavy metals (actinides and lanthanides) in a contaminated treatment pond at a gold mine. C.) Routine determination of the potassium content in bananas (for official USRDA purposes) at the Dole plantation.

Explanation / Answer

1) = B as Inductively coupled plasma mass spectrometry (ICP-MS) is a type of mass spectrometry which is capable of detecting metals and several non-metals at concentrations .

2) = C as Graphite furnace atomic absorptionspectroscopy (GFAAS) (also known as Electrothermal Atomic Absorption Spectroscopy (ETAAS)) is a type ofspectrometry that uses a graphite-coated furnace to vaporize the sample. Briefly, the technique is based on the fact that free atomswill absorb light at frequencies orwavelengths characteristic of the element of interest as potassium in this case

3) = A as it is emitted by chemical company

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