Podcast
Questions and Answers
Chromatography is used in qualitative detection only.
Chromatography is used in qualitative detection only.
False
The positive pole at electrophoresis is the cathode.
The positive pole at electrophoresis is the cathode.
False
High-Performance Liquid Chromatography (HPLC) is characterized by high resolution power.
High-Performance Liquid Chromatography (HPLC) is characterized by high resolution power.
True
Tungsten filament lamps are used for the 200-360 nm range.
Tungsten filament lamps are used for the 200-360 nm range.
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Solid-Phase Extraction (SPE) is widely used in environmental analysis, food testing, and forensic toxicology.
Solid-Phase Extraction (SPE) is widely used in environmental analysis, food testing, and forensic toxicology.
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The cuvette in a spectrophotometer is used to hold a solid analyte.
The cuvette in a spectrophotometer is used to hold a solid analyte.
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Study Notes
Spectroscopy and Chromatography
- Tungsten filaments lamps are not used for 200-360 nm, implying that they are not suitable for this range of wavelengths.
Spectrophotometry
- A cuvette is a container used to hold liquid samples, not solid analytes, in a spectrophotometer.
- The amount of light absorbed by a sample at a spectrophotometer depends on the number of molecules that interact with the light.
Chromatography
- Chromatography is used for both qualitative and quantitative detection, not just qualitative.
- Partitioning is a separation mechanism used in both Gas Chromatography (GC) and Liquid Chromatography (LC).
- SPE (Solid-Phase Extraction) is widely used in environmental analysis, food testing, and forensic toxicology.
- HPLC (High-Performance Liquid Chromatography) is characterized by its high resolution power.
- Electrophoresis is a technique that provides high resolution and has an advantage of very high resolution.
- In electrophoresis, the positive pole is actually the anode, not the cathode.
- Coloring a sample does not give slow confirmation at gel electrophoresis.
- Chromatography is a group of methods based on the interaction between a stationary phase and a mobile phase, not on the absorption of light by substances.
- Chromatography can be used to separate the components of complex mixtures, such as ink.
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Description
Test your knowledge of analytical chemistry concepts, including spectroscopy, chromatography, and more. Identify true or false statements about various techniques and instruments used in analytical chemistry.
