نتایج جستجو برای: thiocyanates

تعداد نتایج: 807  

1995
C. A. Young

Cyanide (CN) is a toxic species that is found predominantly in industrial effluents generated by metallurgical operations. Cyanide's strong affinity for metals makes it favorable as an agent for metal finishing and treatment and as a lixivant for metal leaching, particularly gold. These technologies are environmentally sound but require safeguards to prevent accidental spills from contaminating...

Journal: :Physical chemistry chemical physics : PCCP 2014
Ramesh Kumar Chitumalla Kankatala S V Gupta Chandrasekhram Malapaka Reza Fallahpour Ashraful Islam Liyuan Han Bhanuprakash Kotamarthi Surya Prakash Singh

In an effort to bring out efficient thiocyanate-free dyes for dye sensitized solar cells (DSSC) we have designed, synthesized and characterized four novel cyclometalated ruthenium(II) dyes (M1 to M4) with superior photochemical properties. All dyes contain terpyridyl ligands (TPY) with carboxylic acids as anchoring groups and cyclometalated ligand (TPY-C) with substituents for fine tuning the e...

2015
Tom Berben Dimitry Y Sorokin Natalia Ivanova Amrita Pati Nikos Kyrpides Lynne A Goodwin Tanja Woyke Gerard Muyzer

Thioalkalivibrio thiocyanoxidans strain ARh 2(T) is a sulfur-oxidizing bacterium isolated from haloalkaline soda lakes. It is a motile, Gram-negative member of the Gammaproteobacteria. Remarkable properties include the ability to grow on thiocyanate as the sole energy, sulfur and nitrogen source, and the capability of growth at salinities of up to 4.3 M total Na(+). This draft genome sequence c...

Journal: :Physical chemistry chemical physics : PCCP 2013
Weijie Fang Zhonglin Luo Jianwen Jiang

We report the first atomistic simulation study to characterize poly(ionic liquid) (PIL) membranes and examine their capability for post-combustion CO(2) capture. Four PILs based on 1-vinyl-3-butylimidazolium ([VBIM](+)) are examined with four different anions, namely bis(trifluoromethylsulfonyl)imide ([TF(2)N](-)), thiocyanate ([SCN](-)), hexafluorophosphate ([PF(6)](-)) and chloride ([Cl](-))....

1998
Richard E. Marsh

The structure of a mixed-valence copper complex with 1,10phenanthroline, [Cu(phen)2]±NC±[Cu (phen)((Se,S)CN)][(Se,S)CN].0.5(C2H5OH), -cyano-1 N:2 C-(seleno,thio)cyanato-2 N-tris(1,10-phenanthroline)-1 4N,N0;2 2N,N0-dicopper(I,II) (seleno,thio)cyanate semiethanolate, has been revised from space group Cc to C2/c. Re®nement in C2/c has shown that, contrary to the Cc results, the (Se,S)CN anions ca...

Journal: :Clinical chemistry 1980
E R Dalferes L S Webber B Radhakrishnamurthy G S Berenson

We describe a procedure for determining thiocyanate in plasma with a Technicon AutoAnalyzer I, modified with a 50-mm tubular flow cell to increase the sensitivity of thiocyanate detection. The procedure is suitable for distinguishing cigarette smokers from non-smokers, the mean for smokers being 151 (SD 43) micromol/L and for non-smokers 62 (SD 19) micromol/L.

Journal: :Annual review of plant biology 2006
Barbara Ann Halkier Jonathan Gershenzon

Glucosinolates are sulfur-rich, anionic natural products that upon hydrolysis by endogenous thioglucosidases called myrosinases produce several different products (e.g., isothiocyanates, thiocyanates, and nitriles). The hydrolysis products have many different biological activities, e.g., as defense compounds and attractants. For humans these compounds function as cancer-preventing agents, biope...

Journal: :Clinical chemistry 1984
R Pojer J B Whitfield V Poulos I F Eckhard R Richmond W J Hensley

We compared cotinine, carboxyhemoglobin, and thiocyanate concentrations in blood sampled from 187 cigarette smokers and 181 non-smokers. All three differed significantly between smokers and non-smokers. Cotinine performed best as a test for assessing smoking status, with a sensitivity of 98% as compared with 94% for carboxyhemoglobin and 80% for thiocyanate, all at a specificity of 95%. These d...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2001
J Ghasemi R Amini A Afkhami

A kinetic spectrophotometric method for measuring thiocyanate is described. The proposed method is based on the inhibitory effect of thiocyanate on the oxidation of Methyl Red by bromate in the presence of nitrite, which was monitored at 520 nm. The variables affecting the rate of the reaction were investigated and the optimum conditions were established. Thiocyanate can be measured in the rang...

Journal: :Journal of clinical chemistry and clinical biochemistry. Zeitschrift fur klinische Chemie und klinische Biochemie 1987
P Degiampietro E Peheim D Drew H Graf J P Colombo

A simple photometric procedure was developed for the determination of thiocyanate (SCN-) in plasma and saliva without deproteinisation or dialysis. Fe(III) ions form a red coloured complex with SCN- with a maximum absorbance at 460 nm. Mercury(II) nitrate is used to run a sample blank. A manual and an automated version (COBAS BIO) of the method is described. The method is linear up to 5000 mumo...

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