Spectrophotometric determination of taurine in food samples with phenol and sodium hypochlorite as reagents and an ion-exchange clean-up

The Analyst ◽  
1990 ◽  
Vol 115 (5) ◽  
pp. 653 ◽  
Author(s):  
Oi-Wah Lau ◽  
Shiu-Fai Luk ◽  
Teresa P. Y. Chiu
Keyword(s):  
Ion Exchange ◽  
Spectrophotometric Determination ◽  
Sodium Hypochlorite ◽  
Food Samples

Ion Exchange-Spectrophotometric Determination of Aluminum

1956 ◽  
Vol 28 (8) ◽  
pp. 1326-1328 ◽  
Author(s):  
A. D. Horton ◽  
P. F. Thomason
Keyword(s):  
Ion Exchange ◽  
Spectrophotometric Determination

Fluidized beds in flow analysis: use with ion-exchange separation for spectrophotometric determination of zinc in plant digests

2006 ◽  
Vol 384 (4) ◽  
pp. 1019-1024 ◽  
Author(s):  
Marta F. T. Ribeiro ◽  
Ana C. B. Dias ◽  
João L. M. Santos ◽  
José L. F. C. Lima ◽  
Elias A. G. Zagatto
Keyword(s):  
Ion Exchange ◽  
Spectrophotometric Determination ◽  
Fluidized Beds ◽  
Flow Analysis ◽  
Ion Exchange Separation

scholarly journals Speciation and spectrophotometric determination of uranium in seawater

2004 ◽  
Vol 5 (1) ◽  
pp. 55 ◽  
Author(s):  
M. KONSTANTINOU ◽  
I. PASHALIDIS
Keyword(s):  
Ion Exchange ◽  
Oxidation State ◽  
Spectrophotometric Determination ◽  
Uranium Concentration ◽  
Coastal Areas ◽  
Arsenazo Iii ◽  
Predominant Species ◽  
The Mean ◽  
Seawater Samples

A series of ion-exchange and extraction procedures for the separation of uranium from seawater samples and subsequent spectrophotometric determination of uranium in seawater by means of arsenazo(III) is described. According to the measurements performed by means of traced samples at every stage of separation, the yield of the pre-analytical procedures is generally over 90% and the separation of uranium very selective. The mean uranium concentration in seawater samples collected from five different coastal areas in Cyprus was found to be 3.2 ± 0.2 & micro; g L-1. Uranium in seawater is stable in its hexavalent oxidation state and UO2 (CO3)34- is the predominant species under normal coastal conditions (pH ≥ 8, EH ≥ 0.35 mV, 1 atm and 0.03% CO2).

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