8 Questions
What is the principle behind Atomic Absorption Spectrometry?
Atoms in the ground state absorb light of a particular wavelength characteristic of the element.
How can suspended solids be estimated in a water sample?
By filtration.
What is Biochemical Oxygen Demand (BOD)?
The amount of dissolved oxygen in ppm consumed by biological action, when the sample is kept at 20°C, in the dark, over a period of 5 days.
What is the purpose of Atomic Absorption Spectrometry in water analysis?
To measure the concentration of a particular element in a sample.
What is the effect of free chlorine on DPD in a swimming pool water sample?
Oxidises DPD to form a red product
What is the purpose of adding ammonium molybdate to a phosphate-containing sample?
Produces a yellow precipitate
What is the method used to measure dissolved oxygen (O₂) in a water sample?
Winkler Titration
How can total hardness be measured?
EDTA titration.
Test your knowledge of water analysis techniques, including pH measurement using universal indicator paper and pH meters, as well as Atomic Absorption Spectrometry principles. Learn how to determine the concentration of elements in a sample solution.
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