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A measurement of coloring matter in a solution by use of the spectroscope or spectrophotometer. Substances can be measured by controlling the wavelength of light passing through the system and calibrating the response with known materials followed by measurement of the ubknown material.
spectrophotometric (spek″trŏ-fōt″ŏ-me′trik)
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References in periodicals archive ?
Manning, "Spectrophotometric methods of establishing empirical formulas of colored complexes in solution," Journal of the American Chemical Society, vol.
Kumar, "Spectrophotometric analysis of cinitapride in tablet dosage form using 2.0 M sodium benzoate solution as hydrotropic solubilizing agent," Journal of Analytical Chemistry, vol.
To avoid the obvious disadvantages of several sophisticated and expensive methods, and to help the analysts to choose the most applicable method for a given laboratory routine, the aim of the present study was to develop and validate an improved and alternative UV spectrophotometric method for precision, specificity, and efficient quantification of DEX in tablets and capsules.
Spectrophotometric analysis was carried out on a Systronics 2201, UV-visible double-beam spectrophotometer with matched 1 cm path-length quartz cells.
The compensation method is a nonmathematical method for the detection and elimination of unwanted absorption during spectrophotometric analysis [19, 20, 31, 32].
The spectrophotometric properties of the colored product as well as the different experimental parameters affecting the color development and its stability were studied and optimized by changing each variable in turn, while keeping all the others constant.
The aim of present work was to develop spectrophotometric methods and apply for determination of drug content in dosage form.
Here we report the determination of antihistamines in bulk drug and pharmaceutical formulation to investigate the spectrophotometric characteristics of all five charge transfer complexes.
In the detection and quantification of drugs in pharmaceutical formulations, the spectrophotometric technique in the ultraviolet region (UV) is widely applied, being used especially in the quality control of pharmaceutical industries because it fulfills essential requirements (rapidness, low operational cost and reliable results) for routine analysis [13, 14].
Two spectrophotometric methods manipulating ratio spectra were applied for the selective determination of aclidinium bromide in the presence of formoterol fumarate dihydrate as the interferent without prior separation or pretreatment.
Ghareeb, "Spectrophotometric determination of miconazole nitrate and betamethasone valerate in bulk powder and in topical cream," Indo American Journal of Pharmaceutical Research, vol.