نتایج جستجو برای: bromocresol purple

تعداد نتایج: 7532  

Journal: :Fen ve mühendislik bilimleri dergisi 2023

Kuantum noktalar (QDs) sahip oldukları benzersiz optik ve elektronik özellikleri ile son yıllarda birçok 
 farklı teknolojik alanda popüler hale gelmişlerdir. Bu durum QD'lar organik bileşiklerin etkileşimine olan ilgiyi arttırmaktadır. çalışmada bu ilgiye temel alarak, CdSeTe Brom Krezol Moru (BCP)
 kloroform içerisinde oda sıcaklığın da etkileşimini QDs/BCP yapısının spektroskopik o...

Journal: :Journal of Solution Chemistry 2023

This work aimed to the study effect of ethanol ratios on acidity constants bromocresol purple. The BCP were determined in binary mixtures water with containing 0, 30, 40, 50, 60, and 70% (v/v) using spectrophotometric methods. results indicate dependence ratio ethanol. values log10Ka1 log10Ka2 correlated macroscopic (relative permittivity, ε) microscopic Kamlet–Taft parameters (α, β, π*) mixtur...

2012
Nesrin K. Ramadan Maissa Y. Salem Afaf O. Mohamed Sara E. Shawky

Two simple, accurate and sensitive spectrophotometric methods were developed for the determination of ticlabendazole in bulk and pharmaceutical formulation. These methods were based on the formation of ion-pair association complex (1:1) with bromocresol purple (BCP) and bromophenol blue (BPB). The coloured products were extracted into chloroform and measured spectrophotometrically at 420 nm. Li...

Journal: :Journal of clinical microbiology 1988
R C Summerbell S A Rosenthal J Kane

Bromocresol purple-milk solids-glucose medium, proposed by Fischer and Kane in 1971 (Mycopathol. Mycol. Appl. 43:169-180, 1971) as an aid in the rapid determination of Trichophyton rubrum and Trichophyton mentagrophytes, was evaluated across a wide range of isolates to determine its accuracy and efficacy in the clinical laboratory. Results showed that it facilitated accurate determination of ty...

Journal: :The Journal of Automatic Chemistry 1995
Esbjörn Ljunggren Bo Karlberg

A gas diffusion FIA method for determination of total CO(2) in beer and in soft drinks is described. The composition of the acceptor stream for diffused carbon dioxide is critical. Bromocresol purple has been selecled among a large number of tested pH indicators and if the detection is made at a wavelength of 430 nm, stable baseline conditions and positive deflections of the resulting FIA peaks...

Journal: :SN applied sciences 2021

Abstract Based on the interaction between ascorbic acid and bromocresol purple, a new simple, straightforward, quick method for quantification of is proposed. The procedure based determined quenching effect natural fluorescence signal purple in reaction phosphate buffer solution (pH 6). reduction intensity detected at 641 nm, while excitation occurs 318 nm. linear relationship reduced concentra...

Journal: :Chemistry proceedings 2021

Natural phenolic antioxidants are extensively studied compounds due to their positive health effect and wide distribution in human diets. The simultaneous occurrence samples requires selective methods for determination. Electrochemical sensor based on the polyaminobenzene sulfonic acid functionalized single-walled carbon nanotubes (f-SWCNT) electropolymerized bromocresol purple has been develop...

Journal: :Journal of clinical microbiology 1981
T R Oberhofer

Fifty-two isolates of Pasteurella (48 strains of Pasteurella multocida and 4 strains of atypical Pasteurella) were identified by conventional and commercial test systems. All strains fermented glucose, sucrose, and fructose in purple broth base (Difco Laboratories) with bromocresol purple as indicator, although the atypical Pasteurella produced fermentation reactions that were barely perceptibl...

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