Which modern analytical instrument is best suited for detecting trace levels of

Practice Questions

Q1
Which modern analytical instrument is best suited for detecting trace levels of pollutants in air samples?
  1. Gas Chromatography-Mass Spectrometry
  2. High-Performance Liquid Chromatography
  3. Ultraviolet-Visible Spectrophotometer
  4. Fluorescence Spectrometer

Questions & Step-by-Step Solutions

Which modern analytical instrument is best suited for detecting trace levels of pollutants in air samples?
  • Step 1: Understand that pollutants in the air can be present in very small amounts, known as trace levels.
  • Step 2: Learn that detecting these small amounts requires sensitive and precise instruments.
  • Step 3: Identify that Gas Chromatography-Mass Spectrometry (GC-MS) is a technique that combines two methods: gas chromatography and mass spectrometry.
  • Step 4: Recognize that gas chromatography separates different compounds in a sample, while mass spectrometry identifies and quantifies them.
  • Step 5: Conclude that GC-MS is highly effective for detecting trace levels of volatile and semi-volatile pollutants in air samples.
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