chromatography

/,kroumə'tɔgrəfi/

Thân thiện

A student uses chromatography to separate the pigments in a leaf.

Definition

1. Noun:
   • A laboratory technique for separating the components of a mixture: Chromatography is a scientific process that separates a mixture by passing it through a medium where the components move at different rates based on their differential interactions with the medium.

Usage

Chromatography is used as a mass noun. It refers to the analytical method itself, not a single instance. You typically use it with verbs like use, perform, employ, or apply. - Scientists use chromatography to analyze complex chemical samples. - The laboratory will perform chromatography on the plant extract.

Examples

• Noun:
  • Paper chromatography is a simple method often demonstrated in schools.
  • The purity of the compound was confirmed by chromatography.
  • Gas chromatography-mass spectrometry (GC-MS) is a powerful analytical tool.

Advanced Usage

• "To subject something to chromatography": To analyze a substance using this technique.
  • The unknown substance was subjected to chromatography for identification.

Variants and Related Words

• Chromatograph (noun): The instrument used to perform chromatography.
  • The sample was injected into the chromatograph.
• Chromatographic (adjective): Relating to or using chromatography.
  • The chromatographic data revealed two distinct compounds.
• Chromatogram (noun): The visual output or record produced by a chromatograph.
  • The chromatogram showed several peaks, each representing a different component.

Synonyms

• Separation technique: A general term for methods like chromatography, distillation, or filtration.
• Analytical separation: Emphasizes the purpose of identifying or measuring mixture components.

Different Meanings

As a scientific term, "chromatography" has a single, specific meaning related to separation science. It does not have common idiomatic or figurative uses.

Phrases / Phrasal Verbs

Not applicable for this technical noun.

Idioms

Not applicable for this technical noun.

Học thuật

Noun

1. a process used for separating mixtures by virtue of differences in absorbency