ANALYTICAL TECHNIQUE IN ENVIRONMENTAL CHEM

Following are the analytical techniques in environmental studies except

• Volumetric analysis

• Infrared analysis

• Acidity/alkalinity analysis

• Gravimetric analysis

What is the parameter determined by gravimetric analysis

• Measures alkalinity

• Measures turbidity

• Measures mass

• Measures volume

The following analytical method is based on affinity of analyte to hydrophobic agent

• AAS

• Colorimetry test

• HPLC

• NMR

One of the quantification of pollutant is using Atomic Absorption Spectrophotometry . It is based on

• Affinity towards hydrophilic compound

• Affinity towards hydrophobic compound

• Molecular mass of compound

• Absorption of analyte

Water hardness is based on high concentration of

• mercury content

• sodium chloride

• calcium and magnesium ion

• copper ion

_________ amount of oxygen required tp oxidize only organic material in organic material in sewage

• Turbidity

• BOD

• COD

• DO

In the qualification of hard water test using soap, formation of scum is detected by

• green precipitates

• cloudy solution

• white solids

• blue solution

Hard water causes the following except

• poor soap and detergent performances

• mineral build ups in fixtures

• cancer

• fish health quality