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Simple answer to your question should be - None. Whoever designed this question for students does not understand the basic principles of analytical chromatography. Under low concentration of analyte, …

Speciation analysis is very challenging because you would like to separate the species first before detection. In order times electrochemical detection was done by now ion chromatography is the way to …

Reporting to the nearest quantity means that you report as many decimal places of the quantity as suggested. This is a common analytical chemistry expression given in procedures or analytical protocol …

This terminology is specific to EPA and it is not universal, because there are so many legal issues associated with any environmental analysis. They have to be extremely careful at each and every step …

You are right about the limitations of century old Lassaigne's method. Why are they still teaching it? Modern day CHNSO elemental analysis is done with gas chromatograpy systems. If you are quoting fr …

Recall the flame emission experiment is basically an atomic emission experiment. We don't say it is a compound emission experiment. The job of the flame/plsama or any high temperature medium is to dec …

There is a very simple dilution formula: C$_{initial}$ x V$_{initial}$=C$_{final}$ x V$_{final}$ where C and V refer to concentration and volume in consistent units. When you analyze the sample (=Prob …

There is nothing absolute in HPLC related measurements. Take the easiest example first. Think of a separation of a racemate using a chiral column on a UV detector. After injection, you will see two pe …

As the long series of comments illustrates, there is no universal answer, it is highly situation specific. However it seems that you got concerned by reading Ramsey et al. papers and presentations. It …

How would those percentages be determined in real life? Spectroscopy? You are right, this analysis comes in the domain of analytical chemistry. The fundamental requirement for formula determinati …

Good to see interesting analytical chemistry questions after a long time. I can give a qualitative example. Suppose you wish to collect the spectrum of a star. What time would be the best to carry out …

There can be plenty. There is no definite list. I would suggest to look up the following terms in Skoog or Daniel Harris' Analytical Chemistry. Worth a trip to the library now :-) The following concep …

Are there any other ideas how to get exact concentrations using small amounts of the desired substance? Every mass spectrometry lab should have microbalances to prepare samples and standards. A lab …

I will rather ask you, what is a detection limit? Chemists don't agree among themselves about the definition because they do not know enough statistics and statisticians do not know about much about c …

In analytical chemistry, sensors refer to analyte specific devices, e.g., glucose sensors, pH sensor etc. Smell on the other, generated by a burning complex mixtures such as fuels can rarely be associ …