Simplified Technic for the Determination of Serum Protein-Bound Iodine

1961 ◽  
Vol 7 (6) ◽  
pp. 637-645 ◽  
Author(s):  
Louise W Faulkner ◽  
Richard P Levy ◽  
Jack R Leonards
Keyword(s):  
Serum Protein ◽  
Sodium Carbonate ◽  
Room Temperature ◽  
Sodium Carbonate Solution ◽  
Serum Proteins ◽  
Internal Standard ◽  
Temperature Correction ◽  
Carbonate Solution ◽  
Correction Formula

Abstract A simplified technic for the determination of serum protein-bound iodine (PBI) is presented. Endogenously labeled l131 PBI is completely recovered. The technic is based on the method of Barker et al. (1) and includes the following modifications: The number of washes of the precipitated serum proteins are decreased. Unashed iodide standards are used in a sodium carbonate solution rather than an internal standard. A temperature-correction formula is employed to allow the cericarsenite-iodide reaction to be carried out at room temperature, and a stable cerate color is produced with brucine sulfate so that the colorimetry is carried out with greater convenience. The serum PBI concentrations are read directly from a graph, which simplifies the calculations.

scholarly journals Study on the Synthesis of Some (Un)Substituted 2-Amino-4-aryl-7-hydroxy-4H-chromene-3-carbonitriles in the Water Medium

Proceedings ◽  
2018 ◽  
Vol 9 (1) ◽  
pp. 67
Author(s):  
Nguyen Dinh Thanh ◽  
Do Son Hai ◽  
Pham Thi Thu Hien ◽  
Vu Thi Ngoc Bich ◽  
Vu Ngoc Toan ◽  
...  
Keyword(s):  
Sodium Carbonate ◽  
Room Temperature ◽  
Sodium Carbonate Solution ◽  
Carbonate Solution ◽  
Simple Synthesis ◽  
Water Medium ◽  
One Pot ◽  
Three Component Reaction ◽  
Substituted Benzaldehydes ◽  
The One

An efficient and simple synthesis of substituted 2-amino-4H-chromene-3-carbonitriles was developed by the one-pot and three-component reaction of a mixture of corresponding substituted benzaldehydes, resorcinol, and malononitrile in the presence of sodium carbonate solution as a catalyst at room temperature.

An Easily Controlled Method for Staining Mitochondria

1948 ◽  
Vol s3-89 (6) ◽  
pp. 229-231
Author(s):  
A. J. CAIN
Keyword(s):  
Sodium Carbonate ◽  
Sodium Carbonate Solution ◽  
Carbonate Solution ◽  
Methyl Blue ◽  
Acid Dye

A method for staining mitochondria is described in which sections are overstained with acid fuchsine, differentiated in sodium carbonate solution, and counterstained with a methyl blue acting as an acid dye.

scholarly journals Effective sericin-fibroin separation from Bombyx mori silkworms fibers and low-cost salt removal from fibroin solution

2019 ◽  
pp. 97-101
Author(s):  
Estefanía Echeverri-Correa ◽  
David Orlando Grajales-Lopera ◽  
Santiago Gutiérrez-Restrepo ◽  
Claudia Patricia Ossa-Orozco
Keyword(s):  
Bombyx Mori ◽  
Sodium Carbonate ◽  
Textile Industry ◽  
Sodium Carbonate Solution ◽  
Low Cost ◽  
High Surface ◽  
Chemical Properties ◽  
Surface Reactivity ◽  
Carbonate Solution ◽  
Cellulose Membrane

Silk from Bombyx mori has two main proteins: fibroin and sericin. Fibroin is a protein that exhibits good biocompatibility and high surface reactivity, desirable properties for many biomedical applications. Sericin is related with adverse immune response in some medical uses. Therefore, its removal (degumming) is desirable in almost all fields, including the textile industry and biological applications. In this study, three degumming methods (distilled water, liquid neutral detergent and sodium carbonate solution) were evaluated using Raman spectroscopy. Degummed silk treated with sodium carbonate solution exhibits a pattern consistent with previous studies for sericin-free fibroin, and significant differences with the untreated silk pattern. Also, degummed fibroin fibers were dissolved in a calcium chloride solution, in pursuit of a more versatile material. Additionally, different porous membranes of dialysis tubes were tested to remove residual salts, and were compared by conductivity measurements and EDS analysis, identifying good performance for an affordable food cellulose membrane. The results showed that it is possible to obtain fibroin with adequate chemical properties, using low-cost process and membrane of dialysis tubes. 

Improved liquid-chromatographic determination of haloperidol in plasma.

1984 ◽  
Vol 30 (7) ◽  
pp. 1228-1230 ◽  
Author(s):  
A K Dhar ◽  
H Kutt
Keyword(s):  
Mobile Phase ◽  
High Performance ◽  
Room Temperature ◽  
Internal Standard ◽  
Isoamyl Alcohol ◽  
Chromatographic Determination ◽  
Reversed Phase ◽  
Liquid Chromatographic Determination ◽  
Liquid Chromatographic

Abstract This method for determination of haloperidol in plasma is based on "high-performance" isocratic liquid chromatography with the use of a C8 bonded reversed-phase column at room temperature. Haloperidol and the internal standard (chloro-substituted analog) are extracted from alkalinized plasma into isoamyl alcohol/heptane (1.5/98.5 by vol) and back-extracted into dilute H2SO4. The aqueous phase is directly injected onto the column. The mobile phase is a 30/45/25 (by vol) mixture of phosphate buffer (16.5 mmol/L, pH 7.0), acetonitrile, and methanol. Unlike other liquid-chromatographic procedures for haloperidol, commonly used psychotropic drugs do not interfere. Analysis can be completed within an hour. The procedure is extremely sensitive (1.0 microgram/L) and is well reproducible (CV 5.6% for a 2.5 micrograms/L concentration in plasma).

Synthesis of 5,6-Diaryl-1,2,4-triazines

1978 ◽  
Vol 33 (12) ◽  
pp. 1503-1507 ◽  
Author(s):  
Farid S. G. Soliman ◽  
Ibrahim M. Labouta ◽  
A. Ibrahim El Sebai ◽  
S. A. Shams El Dine
Keyword(s):  
Acetic Acid ◽  
Acetic Anhydride ◽  
Sodium Carbonate ◽  
Sodium Carbonate Solution ◽  
Carbonate Solution ◽  
Aqueous Acetic Acid ◽  
Semicarbazide Hydrochloride

AbstractThe synthesis of 6-(4-methoxyphenyl)-5-phenyl-3-oxo-2,3-dihydro-1,2,4-triazine (5a) from 4-methoxybenzoin, 4-methoxybenzil, or 4-methoxybenzoin semicarbazone and semi-carbazide hydrochloride is reported. The condensation of 4-methoxybenzil with thiosemi-carbazide yielded 6-(4-methoxyphenyl)-5-phenyl-3-thioxo-2,3-dihydro-I,2,4-triazine (5b) which was converted to its 3-oxo analogue 5 a with acetic anhydride. Reduction of 5 a and 5 b with zinc and aqueous acetic acid led to the corresponding 2,3,4,5-tetrahydro-1,2,4-triazines 6 a and 6b, respectively. Oxidation of 5 b with iodine in sodium carbonate solution afforded bis [6-(4-methoxyphenyl)-5-phenyl-1,2,4-triazin-3-yl]disulphide (7). Analogous triazines were prepared by condensing 3,3'-diiodobenzil with semicarbazide hydrochloride or thiosemicarbazide.

Aza-Michael reaction promoted by aqueous sodium carbonate solution

2013 ◽  
Vol 54 (21) ◽  
pp. 2669-2673 ◽  
Author(s):  
Xiao-Ji Tang ◽  
Zhao-Lei Yan ◽  
Wen-Liang Chen ◽  
Ya-Ru Gao ◽  
Shuai Mao ◽  
...  
Keyword(s):  
Sodium Carbonate ◽  
Sodium Carbonate Solution ◽  
Michael Reaction ◽  
Carbonate Solution ◽  
Aqueous Sodium ◽  
Aqueous Sodium Carbonate
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