Colorimetric Determination of Low Concentrations of Primary and Secondary Alcohols

1960 ◽  
Vol 32 (7) ◽  
pp. 865-867 ◽  
Author(s):  
D. P. Johnson ◽  
F. E. Critchfield
Keyword(s):  
Colorimetric Determination ◽  
Secondary Alcohols ◽  
Low Concentrations

Colorimetric Determination of Low Concentrations of Oxygen in Gases

1955 ◽  
Vol 27 (12) ◽  
pp. 2012-2014 ◽  
Author(s):  
C. Stafford ◽  
J. E. Puckett ◽  
M. D. Grimes ◽  
B. J. Heinrich
Keyword(s):  
Colorimetric Determination ◽  
Low Concentrations

THE COLORIMETRIC DETERMINATION OF PLATINUM WITH 5-(p-DIMETHYLAMINOBENZYLIDENE)-RHODANINE

1963 ◽  
Vol 41 (3) ◽  
pp. 667-670 ◽  
Author(s):  
Frances E. Piercy ◽  
D. E. Ryan
Keyword(s):  
Ascorbic Acid ◽  
The Other ◽  
Colorimetric Determination ◽  
Platinum Metals ◽  
Low Concentrations ◽  
Fold Excess

5-(p-Dimethylaminobenzylidene)-rhodanine is used to determine 0.5 to 6 p.p.m. of platinum colorimetrically, after reduction of platinum IV with ascorbic acid. Platinum can be determined in the presence of a 10-fold excess of palladium; low concentrations of the other platinum metals, except rhodium, do not seriously interfere.

Colorimetric Determination of Low Concentrations of Dissolved Oxygen in Water

1955 ◽  
Vol 27 (9) ◽  
pp. 1401-1404 ◽  
Author(s):  
L. S. Buchoff ◽  
N. M Ingber ◽  
J. H. Brady
Keyword(s):  
Dissolved Oxygen ◽  
Colorimetric Determination ◽  
Low Concentrations

Colorimetric Determination of Secondary Alcohols by Conversion to Ketones

1960 ◽  
Vol 32 (7) ◽  
pp. 862-865 ◽  
Author(s):  
F. E. Critchfield ◽  
J. A. Hutchinson
Keyword(s):  
Colorimetric Determination ◽  
Secondary Alcohols

An improvement in automatic colorimetric determination of low concentrations of sulphate

1967 ◽  
Vol 1 (5) ◽  
pp. 599
Author(s):  
Carl-Elis BostrÖm ◽  
Fredrik Norin ◽  
Göran A. Persson
Keyword(s):  
Colorimetric Determination ◽  
Low Concentrations

A Method for the Colorimetric Determination of β-Glucuronidase in Urine, Serum, Tissue; Assay of Enzymatic Activity in Health and Disease

1959 ◽  
Vol 36 (2) ◽  
pp. 193-201 ◽  
Author(s):  
Julius A. Goldbarg ◽  
Esteban P. Pineda ◽  
Benjamin M. Banks ◽  
Alexander M. Rutenburg
Keyword(s):  
Enzymatic Activity ◽  
Colorimetric Determination ◽  
Health And Disease ◽  
Urine Serum

Colorimetric Determination of Fluoride in Drinking Groundwater using a Polymeric Zirconium Complex of 5-(2-Carboxyphenylazo)-8-Hydroxyquinoline

2013 ◽  
Vol 12 (7) ◽  
pp. 460-465
Author(s):  
Sameer Amereih ◽  
Zaher Barghouthi ◽  
Lamees Majjiad
Keyword(s):  
Drinking Water ◽  
Detection Limit ◽  
Complex Formation ◽  
Molar Absorptivity ◽  
Colorimetric Determination ◽  
Zirconium Complex ◽  
Reliable Determination ◽  
Percentage Recovery ◽  
Quantitation Limit

A sensitive colorimetric determination of fluoride in drinking water has been developed using a polymeric zirconium complex of 5-(2-Carboxyphenylazo)-8-Hydroxyquinoline as fluoride reagents. The method allowed a reliable determination of fluoride in range of (0.0-1.5) mg L-1. The molar absorptivity of the complex formation is 7695 ± 27 L mol-1 cm-1 at 460 nm. The sensitivity, detection limit, quantitation limit, and percentage recovery for 1.0 mg L-1 fluoride for the proposed method were found to be 0.353 ± 0.013 μg mL-1, 0.1 mg L-1, 0.3 mg L-1, and 101.7 ± 4.1, respectively.

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