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 ?
This study showed an increased turbidity by turbidimetry, which is interpreted as an increase in the number of crystals, and, by microscopy, it was possible to confirm the reduction in the size of crystals.
Then, microtubule protein was extracted from the brain of a newly-died sheep, and its activity was studied through turbidimetry method.
PHmeter AT-300 and Turbidimetry Microprocessor Plus were used to measure pH and turbidity, respectively.
Serum RF levels were measured by the turbidimetry method using commercial kits (Biosystem, Barcellona, Spain).
This process can be conveniently evaluated using in-line turbidimetry and analyzed even further by reprocessing the nanocomposite during multiple extrusions.
Haynes RJ (1993) Effect of sample pretreatment on aggregate stability measured by wet sieving or turbidimetry on soils of different cropping history.
Hemoglobin was determined by the cyanmethemoglobin method, ferritin by micro-particle enzyme immunosorbent assay (MEIA); C-reactive protein by turbidimetry commercial CRP assay (Biosystems); transferrin by turbidimetry assay; ceruloplasmin quantification was done by using nephelometry Array.
Typical nephelometry utilises a sensor located at the angle of 90[degrees], whilst turbidimetry requires that of 180[degrees], i.
Some evaluated the growth rate using turbidimetry in MRS broth, rather than by a plate count in MRS agar [1, 9], so their results are qualitative or semiquantitative because CFU were not counted.
Flame atomic absorption spectroscopy method was employed to analyze serum trace element concentrations, and turbidimetry method using immunoglobulin kit was used for the estimation of serum immunoglobulin levels.
Sulphate was measured by turbidimetry and total acidity by volumetric determination (Standard methods for water analysis reference 4500E, 2310B, respectively).