Turbidimetry


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turbidimetry

[‚tər·bə′dim·ə·trē]
(analytical chemistry)

Turbidimetry

 

(also turbidimetric analysis), a method of analyzing turbid media based on the measurement of the intensity of light absorbed by the media. Turbidimetric measurements are made in transmitted light with visual and photoelectric colorimeters and turbidimeters, which are essentially colorimeters without light filters. As in the case with nephelometry, turbidimetry requires that the formation conditions of the disperse phase be carefully maintained. A special type of turbidimetry is turbidimetric titration, in which the maximum of turbidity is determined by means of photoelectric colorimeters. Turbidimetry is used for analytical determinations in various media.

REFERENCE

Voiutskii, S. S. Kurs kolloidnoi khimii. Moscow, 1975.
References in periodicals archive ?
In blood samples, C reactive protein (CRP) was detected by immune turbidimetry methods, WBC and neutrophil count by flow cytometry (percentage of neutrophils).
High sensitive C-reactive protein (CRP) levels were calculated with automated turbidimetry and serum albumin and creatinine levels were measured by using automated photometry.
In the present study, the prevalence of AR and ASR was 3.86% and 20.76%, respectively, assayed using turbidimetry in Chinese chronic stable angina patients, which was obviously lower than that found in other studies.
Winefordner, "Atmospheric aerosol measurements by cavity ringdown turbidimetry," Aerosol Science and Technology, vol.
Cystatin C levels were measured by latex agglutination turbidimetry [37].
The C reactive protein (CRP) was determined by turbidimetry (at 552 nm) according to Eda et al.
A commonly used method to investigate the properties and the structure of fibrin clots is turbidimetry and light scattering, which can provide information about fiber size [12, 13] and fiber (protein) density [14, 15].
Nitrogen was determined by the semimicro-Kjeldahl method, phosphorus and boron by colorimetric methods, sulphur by turbidimetry, potassium by flame and emission photometry, and calcium, magnesium, copper, iron, manganese and zinc were determined by the atomic absorption spectrophotometry method.
However, with end-point analysis (gel electrophoresis, lateral flow, or turbidimetry), as in the case of helicase-dependent amplification, nucleic acid sequence-based amplification, or LAMP, results required 60-180 min depending on the assay (61).
The agglutination of the latex particles is proportional to the CRP concentration and can be measured by turbidimetry in the analyzer A25 (Biosystems S.A., Barcelona, Espana).
In the same extract, potassium (K) was determined by flame photometry, sulfur (S) by sulfate turbidimetry (Jackson, 1958); and calcium analyses (Ca), magnesium (Mg), by atomic-absorption spectroscopy.