Question

Q& What are the "Merits and demerits bottowing -amalytical Methods used tor the analysis of Sulfur olionkide (SO2) in air? t S02 ditectEol b lon chromatography a:, Colorimetric methed oted Conductimeie methool omb Fluarescence 4: and whch on is th best Methad dmeng atl? enoa a

This question is telated to analytical Chemistry

Answer 1

It is a colorless, irritating, non-flammable gas with a penetrating odor consisting of a sulfur atom and two oxygen (SO₂)

SO₂ is a reducing substance that, over time and in contact with air and moisture, becomes sulfur trioxide. The speed of this reaction under normal conditions is low.

1. Ion exchange chromatography (or ion chromatography) is a process that allows the separation of ions and polar molecules based on the charge properties of molecules.

It can be used in almost any type of charged molecule

It is often used in protein purification, water analysis or quality control.

2. Colorimetric method, this method provides a measure of the concentration of sulfur dioxide (SO₂) in the environment to determine compliance with the maximum permissible limits air quality for sulfur oxides (expressed as sulfur dioxide).

The method is applicable to the measurement of SO₂ concentrations in ambient air using sampling periods of 30 minutes to 24 hours.

This method turns out to be the best of all because it determines with greater quality and quantity the sulfur dioxide in the air.

3. Conductimetric method, it is an analytical method based on the electrical conduction of the ions in solution, which is used to measure the molarity of a solution, determined by its ionic or saline charge, of great mobility between two points of different potential.

The scope of this technique in quantitative analyzes is limited by virtue of the lack of selectivity of conductance, once all the ions present contribute to total conductance.

The main applications are related to the analysis of binary water-electrolyte mixtures, to the determination of the total concentration of the electrolytes in solution, and to the determination of the concentration of solutions containing a single strong electrolyte.

4. Fluorescence method, it is an emission process in which the molecules are excited by the absorption of electromagnetic radiation and by relaxing to the basal state they release excess energy in the form of photons.

It is primarily concerned with electronic and vibratory states.

Atomic fluorescence spectroscopy techniques are practiced in other types of analysis, and measurement of a compound present in the air, in water or in another medium.