Sample interview questions: Can you explain your knowledge of different chemical analysis methods used in environmental monitoring?
Sample answer:
Chemical Analysis Methods in Environmental Monitoring
1. Spectrophotometry:
- Measures the absorbance or emission of light by analytes.
- Techniques include:
- UV-Vis spectrophotometry: Measures absorption in the UV and visible range.
- Atomic absorption spectrophotometry (AAS): Determines metal concentrations by measuring absorption lines.
- Inductively coupled plasma mass spectrometry (ICP-MS): Provides elemental analysis in complex matrices.
2. Chromatography:
- Separates analytes based on their physical or chemical properties.
- Techniques include:
- Gas chromatography (GC): Separates volatile compounds based on boiling point and polarity.
- Liquid chromatography (LC): Separates compounds based on size, charge, or polarity.
- High-performance liquid chromatography (HPLC): High-resolution LC using pressurized liquids.
3. Electroanalytical Methods:
- Measure changes in electrical properties.
- Techniques include:
- Ion chromatography: Separates and quantifies ions based on their charge and size.
- Potentiometry: Measures ion concentration using an electrode potential.
- Conductiv… Read full answer
Source: https://hireabo.com/job/5_2_11/Environmental%20Chemist