Spectrophotometric method of determining proxanol in aqueous solutions and biological fluids

1983 ◽  
Vol 17 (9) ◽  
pp. 670-673
Author(s):  
I. N. Kuznetsova ◽  
N. Sh. Gokhaman
Keyword(s):  
Aqueous Solutions ◽  
Spectrophotometric Method ◽  
Biological Fluids

Study of solvent extraction of atomoxetine from aqueous solutions and biological fluids

2020 ◽  
Vol 13 (9) ◽  
pp. 4303
Author(s):  
Liudmila Yu. Tomarovska ◽  
Sergii V. Baiurka ◽  
Svetlana A. Karpushina
Keyword(s):  
Solvent Extraction ◽  
Aqueous Solutions ◽  
Biological Fluids

A spectrophotometric method for the estimation of the carcinostatic agent 6-chrysenamine (E.O.R.T.C. II6) in biological fluids and tissues

1973 ◽  
Vol 9 (8) ◽  
pp. 591-595 ◽  
Author(s):  
G. Franchi ◽  
A. Forgione ◽  
S. Filippeschi ◽  
J. Csetényi ◽  
S. Garattini
Keyword(s):  
Spectrophotometric Method ◽  
Biological Fluids

A More Sensitive Spectrophotometric Method for Determination of Isoniazid in Serum or Plasma

1971 ◽  
Vol 17 (6) ◽  
pp. 492-494 ◽  
Author(s):  
Leslie Eidus ◽  
Anita M T Harnanansingh
Keyword(s):  
Hydrochloric Acid ◽  
Organic Solvents ◽  
Spectrophotometric Method ◽  
Biological Fluids ◽  
Coupling Reagent ◽  
Sensitive Spectrophotometric Method

Abstract A sensitive spectrophotometric method is described for determining isoniazid in serum or plasma. It is extracted from biological fluids by a mixture of organic solvents and re-extracted into hydrochloric acid. In this medium, isoniazid reacts with trans-cinnamaldehyde to form a derivative absorbing maximally at 340 nm. The method is five times more sensitive than published procedures in which vanillin or piperonal is used as coupling reagent for the estimation of isoniazid.

HOLOGRAPHIC SENSORS FOR DIAGNOSTICS OF COMPONENTS IN AQUEOUS SOLUTIONS AND BIOLOGICAL FLUIDS

2018 ◽  
pp. 105-124 ◽  
Author(s):  
A. V. Kraiski ◽  
V. A. Postnikov ◽  
Т. V. Mironova ◽  
A. A. Kraiski ◽  
М. A. Shevchenko ◽  
...  
Keyword(s):  
Aqueous Solutions ◽  
Biological Fluids

Alternative spectrophotometric method for standardization of chlorite aqueous solutions

2007 ◽  
Vol 585 (2) ◽  
pp. 361-365 ◽  
Author(s):  
Marilia Philippi ◽  
Heldiane S. dos Santos ◽  
Aline O. Martins ◽  
Carla M.N. Azevedo ◽  
Marçal Pires
Keyword(s):  
Aqueous Solutions ◽  
Spectrophotometric Method

Spectrophotometric Method for the Determination of Chlorpromazine and Chlorpromazine Sulphoxide in Biological Fluids

1959 ◽  
Vol 1 (3) ◽  
pp. 263-273 ◽  
Author(s):  
T. L. Flanagan ◽  
T. H. Lin ◽  
W. J. Novick ◽  
I. M. Rondish ◽  
C. A. Bocher ◽  
...  
Keyword(s):  
Spectrophotometric Method ◽  
Biological Fluids

Spectrophotometry of carnitine in biological fluids and tissue with a Cobas Bio centrifugal analyzer.

1986 ◽  
Vol 32 (2) ◽  
pp. 342-346 ◽  
Author(s):  
G Cederblad ◽  
P Harper ◽  
K Lindgren
Keyword(s):  
Serum Sample ◽  
Muscle Tissue ◽  
Spectrophotometric Method ◽  
Present Method ◽  
Biological Fluids ◽  
Wide Concentration Range ◽  
Carnitine Acetyltransferase ◽  
Dialysis Fluid ◽  
Analytical Recovery ◽  
Carnitine Concentration

Abstract A spectrophotometric method for carnitine has been adapted to the Cobas Bio centrifugal analyzer. The addition of carnitine to a system containing carnitine acetyltransferase (EC 2.3.1.7) and acetyl-CoA gives rise to the formation of CoA. The system is coupled to 5,5'-dithiobis(2-nitrobenzoate) (DTNB). Assay response varied linearly with concentration of carnitine over a wide concentration range. The total CV was 5.5% for a carnitine concentration in serum of 58.0 mumol/L. Analytical recovery of carnitine added to a serum sample was 93%. No interference was found in icteric, not grossly hemolyzed, lipemic, or uremic sera. Comparison with a radioenzymatic method showed that results correlated well (r greater than 0.965) but the present method gave values proportionally greater by 10 to 25% for samples of plasma, dialysis fluid, urine, and muscle tissue. Advantages over the original spectrophotometric assays involving DTNB include low reagent costs, rapidity, simplicity, and reproducibility. However, this modification is not as sensitive and probably not as specific as the radioenzymatic methods.

Sign in / Sign up

Export Citation Format

Share Document