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Related to spectrophotometrically: spectrophotometer


An instrument used to determine the relative intensity of various wavelengths in a spectrum of light.

spec′tro·pho′to·met′ric (-fō′tə-mĕt′rĭk) adj.
spec′tro·pho·tom′e·try n.


(General Physics) an instrument for producing or recording a spectrum and measuring the photometric intensity of each wavelength present, esp such an instrument used for infrared, visible, and ultraviolet radiation. See also spectrometer
[C19: from spectro- + photo- + -meter]
spectrophotometric adj
ˌspectrophoˈtometry n


(ˌspɛk troʊ foʊˈtɒm ɪ tər)

an instrument for making photometric comparisons between parts of spectra.
spec`tro•pho`to•met′ric (-təˈmɛ trɪk) adj.
spec`tro•pho`to•met′ri•cal•ly, adv.
spec`tro•pho•tom′e•try, n.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.spectrophotometer - a photometer for comparing two light radiations wavelength by wavelength
photometer - measuring instrument for measuring the luminous intensity of a source by comparing it (visually or photoelectrically) with a standard source
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References in periodicals archive ?
Estimation of Enzyme--Phosphoenolpyruvate carboxylase was assayed spectrophotometrically at 30[degrees]C and 340 nm for at least 3 min in the assay media with a final volume of 1 ml.
Inhibition of ACE was analysed spectrophotometrically.
Plasmid containing the complete human BKV genome cloned into the vector pBR332 was purchased as a bacterial stock (American Type Culture Collection [ATCC], Manassas, Virginia), prepared using QIAfilter Plasmid Midi Kit (Qiagen, Valencia, California), and quantified spectrophotometrically (BioMate 5 UV-visible spectrophotometer, Thermo Spectronic, Altham, Massachusetts).
They determined the enzymatic activity spectrophotometrically of POD and potentiometrically of PME and PG.
Serum PON and ARE activities were measured spectrophotometrically (11,12).
The effect of plant extract on superoxide generated in a non enzymic system was measured spectrophotometrically using the method of Gow-Chin and Hui-Yin (1995).
The ascorbic acid method was used alone to spectrophotometrically determine the concentration of phosphate in the creek water.
The oxidation of NADH is determined by a loss of fluorescence (screening assay) or spectrophotometrically at 340 nm (quantitative assay), and is used as a measure of PK activity.
Besides, the antioxidative capability of the compounds in question was determined spectrophotometrically, using a free radical like 2,2-diphenyl-1-picrylhydrazyl (DPPH).