colorimetry
Definition
Noun: 1. Quantitative chemical analysis by color using a colorimeter: A scientific method for determining the concentration of a substance in a solution by measuring the intensity of its color. This is done by comparing the color of the sample to the colors of standard solutions of known concentration using an instrument called a colorimeter.
Usage
- General Use: The term is used primarily in scientific contexts, such as chemistry, biochemistry, environmental science, and medical diagnostics, to describe a specific analytical technique.
- Example: "The laboratory used colorimetry to determine the exact concentration of glucose in the blood samples."
Advanced Usage
- In Research: Colorimetry is often employed in procedures where a chemical reaction produces a colored product proportional to the analyte's concentration.
- Example: "The colorimetry of the reaction mixture provided a rapid assessment of enzyme activity."
- Instrumental Context: The term is closely associated with the instrument used to perform the measurement.
- Example: "Advances in digital colorimetry have improved the accuracy of field tests for water quality."
Variants and Related Words
- Colorimeter (n): The optical instrument used to perform colorimetric analysis by measuring the absorbance of specific wavelengths of light by a colored solution.
- Colorimetric (adj): Relating to or involving colorimetry.
- Example: "They developed a new colorimetric assay for detecting lead ions."
- Spectrophotometry (n): A related but more advanced analytical technique that measures the intensity of light across a spectrum, not just at specific color wavelengths.
Synonyms
- Photometric analysis (in a general sense, though photometry can involve light measurement beyond just color).
- Chromatometry (a less common, nearly synonymous term).
Related Phrases and Contexts
- "To perform colorimetry on": To carry out a colorimetric analysis of a sample.
- Example: "The technician will perform colorimetry on the filtered water sample."
- "Colorimetric determination": The act of finding or measuring a quantity using colorimetry.
- Example: "The colorimetric determination of phosphate concentration is a standard method in soil science."
Noun
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quantitative chemical analysis by color using a colorimeter
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