نتایج جستجو برای: basic dyes

تعداد نتایج: 290790  

Journal: :Adsorption Science & Technology 2004

Journal: :Applied microbiology 1959
J W WEAVER E B JEROSKI I S GOLDSTEIN

In 1891 Ehrlich demonstrated the antimalarial activity of methylene blue and a few years later discovered that trypan red would kill trypanosomes. These disclosures helped lay the foundations of chemotherapy. Since that time many workers have studied the effects of dyes on microorganisms, among them Stearn and Stearn (1924). Dion and Lord (1944) and Aiquel and Herraro (1948) have shown that bas...

Journal: :Water science and technology : a journal of the International Association on Water Pollution Research 2012
Yahya S Al-Degs Amjad H El-Sheikh Ayman A Issa Mohammad A Al-Ghouti Mahmoud Sunjuk

A simple analytical procedure is proposed for simultaneous determination of three common dyes (Basic Blue 9, Brilliant Blue E-4BA, and Reactive Blue 2) in natural waters without prior separation of the solutes. A popular chemometric method, partial least squares regression PLS-1, was effectively applied for spectral resolution of a highly overlapping system. At the best modeling conditions, mea...

Journal: :Analytical and bioanalytical chemistry 2009
Amy R Stefan Christopher R Dockery Brittany M Baguley Brandi C Vann Alexander A Nieuwland James E Hendrix Stephen L Morgan

Designed experiments based on a simplex mixture design were employed to explore the effects of three solvent components (water, formic acid, and aqueous acetic acid), extraction time, and extraction temperature for the automated microextraction of basic (cationic) dyes from acrylic fibers. Extractions were conducted by an automated liquid handling system, and dye extraction was evaluated using ...

Journal: :Zeitschrift fur Naturforschung. Teil B, Chemie, Biochemie, Biophysik, Biologie und verwandte Gebiete 1968
G Tomita

The absorption and fluorescence spectra of some basic dyes were measured in the pre­ sence of large excess of adenosine or nucleic acids. The visible absorption band of dye shifts to longer wavelengths than that in free dye solution. The fluorescence spectral shape and peak posi­ tion remain unchanged on the addition of nucleoside or nucleic acid, while the fluorescence inten­ sity is enhanced ...

Journal: :The Journal of General Physiology 2003
Morton McCutcheon Baldwin Lucre

1. Solutions containing NH(4)OH and NaOH, and CO(2) and HCl may be used to produce various combinations of extracellular and intracellular reactions in starfish eggs, Gonionemus, and Nitella cells. 2. Staining by basic dyes is, with a constant intracellular reaction, favored by increased extracellular alkalinity. With a constant extracellular reaction, staining is hindered by increased intracel...

Journal: :Journal of environmental management 2013
V Hernández-Montoya M A Pérez-Cruz D I Mendoza-Castillo M R Moreno-Virgen A Bonilla-Petriciolet

The adsorption of Acid blue 25, basic blue 9, basic violet 3, Pb(2+), Ni(2+), Zn(2+) and Cd(2+) ions has been studied in single and dye-metal binary solutions using two mineral materials: Clinoptilolite (CL) and ER (Erionite). These zeolites were characterized by FT-IR spectroscopy; potentiometric titration and nitrogen adsorption isotherms at 77 K to obtain their textural parameters. Results i...

2010
Rajeshwari Sivaraj

The ability of the activated carbon prepared from Eichornia Crassipes to remove Reactive Magenta B and Reactive Turquoise Blue dyes from aqueous solution has been carried out as a function of contact time, dose (0.1-0.60 mg/50ml for Magenta B and 0.25-2.0 mg/50ml for Turquoise Blue), pH (2-10) and concentration (25, 50, 75, 100mg.L). An amount of 0.6 g of the adsorbent could remove 56.0% of the...

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