chromatography: meaning, definition, pronunciation and examples
C2Technical / Scientific
Quick answer
What does “chromatography” mean?
An analytical technique for separating components of a mixture based on their differential movement through a stationary phase.
Audio
Pronunciation
Definition
Meaning and Definition
An analytical technique for separating components of a mixture based on their differential movement through a stationary phase.
Any of a set of laboratory techniques used for the separation of mixtures into their individual components based on molecular interactions between the components, a mobile phase, and a stationary phase. In wider scientific contexts, it can refer to the process itself, the equipment used, or the resulting data.
Dialectal Variation
British vs American Usage
Differences
Spelling is identical. Differences are negligible; usage is identical in scientific contexts. Minor variations may occur in the naming of specific sub-techniques (e.g., 'flash column chromatography' is standard; 'quick column chromatography' is a rare informal variant) but these are not region-specific.
Connotations
Identical, purely technical and scientific.
Frequency
Identically high frequency in scientific literature in both regions. Essentially zero frequency in everyday language in both regions.
Grammar
How to Use “chromatography” in a Sentence
The sample was analysed {by/using/with} chromatography.They performed {gas/liquid/column} chromatography on the mixture.The compound was purified {through/by means of} preparative chromatography.Vocabulary
Collocations
Examples
Examples of “chromatography” in a Sentence
verb
British English
- The extract was chromatographed on a silica gel column to isolate the active principle.
American English
- The mixture was chromatographed using a reversed-phase C18 column.
adjective
British English
- The chromatographic profile showed three distinct peaks.
- We need more chromatographic grade solvent for the HPLC.
American English
- The chromatographic analysis confirmed the presence of the contaminant.
- All chromatographic data must be stored in the lab archive.
Usage
Meaning in Context
Business
Rarely used, except in highly specific industries like pharmaceuticals, biotechnology, or analytical equipment manufacturing. E.g., 'Our QC lab requires a new chromatography system.'
Academic
Very high frequency in chemistry, biochemistry, forensic science, pharmacology, and environmental science. It is a core technical term.
Everyday
Virtually never used in everyday conversation.
Technical
The primary context. Used to describe a fundamental class of laboratory techniques for separation, analysis, and purification.
Vocabulary
Synonyms of “chromatography”
Neutral
Weak
Vocabulary
Antonyms of “chromatography”
Watch out
Common Mistakes When Using “chromatography”
- Pronouncing the 'ch' as /tʃ/ (like in 'chip') instead of /k/ (like in 'chrome').
- Misspelling as 'chromotography' (incorrect vowel).
- Using it as a verb (e.g., 'I will chromatography the sample') is non-standard. Correct forms: 'I will analyse the sample by chromatography' or 'I will run a chromatographic analysis.'
FAQ
Frequently Asked Questions
No, this is a common misconception from its name origin. Modern chromatography is used extensively for colourless compounds, with detection methods like UV absorption or mass spectrometry.
Analytical chromatography is used to determine the presence and proportions of components in a mixture (analysis). Preparative chromatography is used to isolate and purify a sufficient quantity of a substance for further use (preparation).
Primarily uncountable when referring to the general technique ('Chromatography is essential'). It can be used as a countable noun when referring to distinct types or instances ('We performed two different chromatographies').
The choice depends on the properties of your mixture (e.g., volatility, polarity, size) and your goal (analysis or purification). Gas chromatography is for volatile compounds, liquid chromatography for non-volatile ones, and affinity chromatography exploits specific biological interactions.
An analytical technique for separating components of a mixture based on their differential movement through a stationary phase.
Chromatography is usually technical / scientific in register.
Chromatography: in British English it is pronounced /ˌkrəʊməˈtɒɡrəfi/, and in American English it is pronounced /ˌkroʊməˈtɑːɡrəfi/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think of CHROMA (Greek for 'colour') and GRAPHY (Greek for 'writing'). Chromatography was first used to 'write' or separate the coloured components in plant leaves.
Conceptual Metaphor
A RACE or JOURNEY where different molecules travel at different speeds through a medium, leading to separation.
Practice
Quiz
What is the primary function of chromatography?