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Relevant bibliographies by topics / Turbidimetric Method

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Journal articles

Academic literature on the topic 'Turbidimetric Method'

Author: Grafiati

Published: 4 June 2021

Last updated: 15 February 2022

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Journal articles on the topic "Turbidimetric Method"

1

Grinberg, Sarina, and Eleonora Shaubi. "A Simple and Rapid Method for Determination of Guayule Rubber." Rubber Chemistry and Technology 59, no. 2 (1986): 204–7. http://dx.doi.org/10.5254/1.3538193.

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Abstract An improved turbidimetric analytical method for guayule rubber was developed. The method is simpler and faster than previously developed turbidimetric methods, and enables the use of commercial solutions of the rubber. Unlike Traub and Perry, who used diisobutyl ketone for extraction of guayule rubber for turbidimetric measurements, we used hexane, which did not extract aromatic compounds along with the rubber, thus giving the best yield of spectrally clean rubber. Propanol is our precipitant of choice for turbidimetric assay of rubber, since it is also good as a colloid-protection ag

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2

Hirayama, Shuji. "Determination of Small Amounts of Niacin in Vinegar: Comparison of Liquid Chromatographic Method with Microbiological Methods." Journal of AOAC INTERNATIONAL 81, no. 6 (1998): 1273–76. http://dx.doi.org/10.1093/jaoac/81.6.1273.

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Abstract An LC method using a new cleanup technique was compared with 2 microbiological methods for determining small amounts of niacin in vinegar. Coefficients of variation for grain vinegar and rice vinegar were 8.33 and 5.3%, respectively, with the LC method, 5.26 and 2.0% with the titrimetric method, and 5.55 and 7.11 % with the turbidimetric method. Among the 3 methods, titrimetry was the most precise. The turbidimetric method tended to yield greater positive error than the titrimetric method. On the other hand, the titrimetric method requires a longer incubation period (72 h) than the tu

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3

Salvayre, R., A. Nègre, J. Radom, and L. Douste-Blazy. "Fluorometric assay for pancreatic lipase." Clinical Chemistry 32, no. 8 (1986): 1532–36. http://dx.doi.org/10.1093/clinchem/32.8.1532.

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Abstract We report a new fluorometric assay in which a fluorescent triglyceride is used for determining lipase activity in serum, and we compare it with turbidimetric and radiometric methods. Because this fluorometric method is at least 50-fold more sensitive than the turbidimetric method, we have been able to develop a micromethod that requires only very small amounts of substrate reagent and serum. The use of fluorescent-labeled fatty acids allows direct determination of the product of lipase action and obviates the use of a standard for calibrating the method. Results of the fluorometric me

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4

Lahuerta Zamora, L., and M. T. Pérez-Gracia. "Using digital photography to implement the McFarland method." Journal of The Royal Society Interface 9, no. 73 (2012): 1892–97. http://dx.doi.org/10.1098/rsif.2011.0809.

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The McFarland method allows the concentration of bacterial cells in a liquid medium to be determined by either of two instrumental techniques: turbidimetry or nephelometry. The microbes act by absorbing and scattering incident light, so the absorbance (turbidimetry) or light intensity (nephelometry) measured is directly proportional to their concentration in the medium. In this work, we developed a new analytical imaging method for determining the concentration of bacterial cells in liquid media. Digital images of a series of McFarland standards are used to assign turbidity-based colour values

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5

Lavine, Barry K., Leah Oxenford, Mariya Kim, Necati Kaval, Marcus Benjamin, and W. R. Seitz. "Novel turbidimetric method to study polymer swelling." Microchemical Journal 103 (July 2012): 97–104. http://dx.doi.org/10.1016/j.microc.2012.01.010.

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6

Hoffmann, G. E., U. Neumann, S. Hoffmann, P. Kaspar, and L. Weiss. "An enzymatic method for calibration of serum lipase assays." Clinical Chemistry 32, no. 3 (1986): 545–47. http://dx.doi.org/10.1093/clinchem/32.3.545.

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Abstract An enzymatic method for the calibration of a turbidimetric lipase assay is described, based on measurement of free fatty acids liberated by the action of lipase. The substrate of the turbidimetric assay is a colipase-containing triolein emulsion. For determination of the free fatty acids a commercial test kit including acyl-CoA synthetase, acyl-CoA oxidase, and peroxidase is used. Intra- and interassay imprecision (CV) is about 5% at above-normal lipase activities, about 10% at normal values. Temperature coefficients are 1.24 and 1.45, respectively, for measurements at 30 and 37 degre

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7

M, Sabarinathan, Ananthi N, and Ashwin Raj H. "Comparative study of various methods in the estimation of blood HbA1c and its outcome." International Journal of Research in Pharmaceutical Sciences 11, SPL2 (2020): 43–47. http://dx.doi.org/10.26452/ijrps.v11ispl2.2063.

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Diabetes mellitus is a major health problem all over the world. Blood glucose measurement has limited value in assessing the long term glycaemic control. Estimation of HbA1c is now routinely used in clinical laboratories for long term assessment of glyceamic control. The result of different methods of HbA1C estimation has a lot of variations and hence it is essential to compare their results. This study is aimed to assess the accuracy and reliability of estimation of HbA1c levels by PEITT and Column Chromatography with ion-exchange resin by comparing it with the hba1c levels of High-performanc

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8

Zaydman, Mark A., Jonathan R. Brestoff, Nicole Logsdon, and Ann M. Gronowski. "Kinetic Approach Extends the Analytical Measurement Range and Corrects Antigen Excess in Homogeneous Turbidimetric Immunoassays." Journal of Applied Laboratory Medicine 4, no. 2 (2019): 214–23. http://dx.doi.org/10.1373/jalm.2019.029256.

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AbstractBackgroundHomogeneous turbidimetric immunoassays are widely used in the clinical laboratory and offer short assay times, reduced reagent costs, and the potential for full automation. However, these assays have a limited analytical measurement range (AMR) above which antigen excess leads to falsely low estimates of the analyte concentration (i.e., the hook effect). Traditional methods for correction of antigen excess require sample dilution, compromising time and cost-efficiency. Therefore, novel methods that extend the AMR are needed.MethodsA kinetic model of a generic homogeneous turb

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9

WANG, NAI-NING, GANG ZHENG, and XIAO-SHU CAI. "TURBIDIMETRIC SPECTRUM METHOD FOR FINE PARTICLE SIZE ANALYSIS." Particulate Science and Technology 12, no. 1 (1994): 115–26. http://dx.doi.org/10.1080/02726359408906644.

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10

Banon, Sylvie, and Joël Hardy. "Study of acid milk coagulation by an optical method using light reflection." Journal of Dairy Research 58, no. 1 (1991): 75–84. http://dx.doi.org/10.1017/s0022029900033525.

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SummaryA turbidimetric method, based on light reflection, was used to study acid coagulation of reconstituted skim milk at low temperature. Capillary viscosimetry, gelograph and laser granulometer techniques were also employed. Acidification of milk was produced by hydrolysis of glucono-δ-lactone. The general shape of the turbidimetric signal as a function of pH or time can be divided into three stages: a lag phase followed by a significant decrease and then a final rise. Two factors have a great influence on the development of milk turbidity, pH and temperature. Dynamic viscosity measurements

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