Question

In: Chemistry

You are asked to determine the concentration of ions dissolved in water samples collected from a...

You are asked to determine the concentration of ions dissolved in water samples collected from a storm sewer. The client is only interested in the following anions: Cl–, Br–, NO3–, SO42– and the following cations: NH4+, Na+, K+, Ca2+ and Mg2+. Select the best method of analysis.

Options: Gas Chromatography

HPLC-Liquid Chromatography

Atomic Absorption

HPLC-Ion Chromatography

Atomic Emission

UV/Vis Spectrophotometry

Solutions

Expert Solution

Answer: HPLC-Ion Chromatography

The most popular applications of ion chromatography are determination of common anions (F-, Cl-, Br-, NO2-, NO3-, PO43-, SO42-) and cations (Na+, K+, NH4+, Mg2+, Ca2+) in water and wastewater. There are mono positive and negative ions are present, atomic spectroscopy will lead an ambigous state, uv-vis cannot differentiate between them accurately. Gas chromatography doesn't do well for same atomic mass. Only ion chromatography is best method for current situation

Please refer the Journal below for more information.

https://www.aweimagazine.com/article/ion-chromatography-in-environmental-analysis-682

Hope this helped you!

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queen_honey_blossom answered 2 years ago
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