نتایج جستجو برای: Thiocyanate

تعداد نتایج: 2420  

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2015
tahereh poursaberi vahide akbar seyed mohammad reza shoja

a new sorbent composed of 3-aminopropyltriethoxy-silane-coated magnetic nanoparticles, functionalized with rhodium(iii) porphyrin complex was synthesized and characterized by elemental analysis, x-ray diffraction (xrd), transmission electron microscopy (tem), fourier transform infrared spectroscopy (ft-ir) and thermogravimetric analysis (tga). the effect of some co-existing anions present in aq...

2013
HERBERT SCHEINBERG

Since the report of Crandall and Anderson (1) in 1934, the distribution of thiocyanate ion in the body has been used as a measure of extracellular fluid volume. All such work has been based on the procedure of administering a known amount of a thiocyanate, and after an interval, measuring the concentration of thiocyanate in the serum. The amount of thiocyanate injected, or more accurately, the ...

Journal: :Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association 2004
Yukiko Hasuike Takeshi Nakanishi Rintarou Moriguchi Yoshinaga Otaki Masayoshi Nanami Yasue Hama Miki Naka Koji Miyagawa Masaaki Izumi Yoshihiro Takamitsu

BACKGROUND Cyanide is a toxic agent, and its detoxification product, thiocyanate, may be a major pathogenetic substance in uraemia. Recent studies examining the myeloperoxidase(MPO)/thiocyanate system have suggested a link between thiocyanate and atherosclerosis. However, inaccuracies in conventional assays for cyanide and thiocyanate have limited the understanding of their metabolism in haemod...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 1994
ali asghar ensafi javad tajebakhsh-e-ardakany

a kinetic spectrophotometric method for rapid measurement of thiocyanate in serum, urine and sewage water with no need for removed of interfering substances in described. the method is based on the inhibitory effect of thiocyanate on the oxidation of pyrogallol red by bromated and nitrite which is monitored at 467 nm. the variables affecting the rate of the reaction were investigated and the op...

Journal: :The Journal of biological chemistry 1949
J L WOOD E F WILLIAMS

In a previous report (1) we have shown that a small fraction of the sulfur of injected thiocyanate is converted to sulfate by the rat. The conversion of thiocyanate to sulfate had been predicted to occur as the result of the physiological activity of thiocyanate ion which is known to be a goitrogen and a hypotensive agent. Our results could not be taken as unequivocal evidence for the metabolis...

Journal: :Thorax 1982
Y Saloojee C J Vesey P V Cole M A Russell

Carboxyhaemoglobin and plasma thiocyanate concentrations were measured in 79 non-smokers and 360 cigarette smokers. The mean levels were 0.73% and 7.09% carboxyhaemoglobin and 40 . 2 and 133 . 8 mumol thiocyanate/1 plasma respectively. With 1 . 6% carboxyhaemoglobin and 73 . 0 mumol thiocyanate/1 plasma as critical values the concentrations of carboxyhaemoglobin in 96.6% of subjects and of thio...

Journal: :The Biochemical journal 1997
C J van Dalen M W Whitehouse C C Winterbourn A J Kettle

The neutrophil enzyme myeloperoxidase uses H2O2 to oxidize chloride, bromide, iodide and thiocyanate to their respective hypohalous acids. Chloride is considered to be the physiological substrate. However, a detailed kinetic study of its substrate preference has not been undertaken. Our aim was to establish whether myeloperoxidase oxidizes thiocyanate in the presence of chloride at physiologica...

2003
NELSON KINGSLAND

l:lle or&n and fate of thiocyanate ion in the body have been of interest for more than a century. It has been generally accepted that the ion does not readily permeate normal cell membranes; t.hc distribution of thiocyanate ion in the body is the basis of a method for determination of extracellular fluid volume (1). Despite its assumed extracellular localization, thiocyanate ion is physiologica...

Ali Asghar Ensafi Javad Tajebakhsh-e-Ardakany

A kinetic spectrophotometric method for rapid measurement of thiocyanate in serum, urine and sewage water with no need for removed of interfering substances in described. The method is based on the inhibitory effect of thiocyanate on the oxidation of pyrogallol red by bromated and nitrite which is monitored at 467 nm. The variables affecting the rate of the reaction were investigated and th...

Journal: :Clinical chemistry 1979
P Lundquist J Mårtensson B Sörbo S Ohman

We describe a method for rapid and specific measurement of thiocyanate in serum or urine. We separate thiocyanate from interfering compounds by adsorbing it on an anion-exchange resin that has special affinity for thiocyanate, then eluting with sodium perchlorate. The eluted thiocyanate is quantified by a modified König reaction, sodium hypochlorite being used as the chlorinating reagent. Analy...

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