Flow-injection spectrophotometric determination of fluoride by using the zirconium/alizarin red S complex

1988 ◽  
Vol 214 ◽  
pp. 433-438 ◽  
Author(s):  
T.J. Cardwell ◽  
R.W. Cattrall ◽  
M. Mitri ◽  
I.C. Hamilton
Keyword(s):  
Spectrophotometric Determination ◽  
Flow Injection ◽  
Alizarin Red S ◽  
Alizarin Red

Spectrophotometric determination of aluminium with alizarin red S sensitized with polyvinylpyrrolidone

1983 ◽  
Vol 149 ◽  
pp. 379-383 ◽  
Author(s):  
J. Hernández-Méndez ◽  
R. Carabias-Martínez ◽  
B. Moreno-Cordero ◽  
L. Gutiérrez-Dávila
Keyword(s):  
Spectrophotometric Determination ◽  
Alizarin Red S ◽  
Alizarin Red

Spectrophotometric determination of zirconium with alizarin red S in the presence of polyvinylpyrrolidone

1985 ◽  
Vol 175 ◽  
pp. 345-348 ◽  
Author(s):  
J. Hernández Méndez ◽  
B. Moreno Cordero ◽  
L. Gutierrez Dávila
Keyword(s):  
Spectrophotometric Determination ◽  
Alizarin Red S ◽  
Alizarin Red

scholarly journals Spectrophotometric flow injection system for determination of Zn2+ in ophthalmic formulations using Alizarin red S

2018 ◽  
Vol 34 (2) ◽  
pp. 67
Author(s):  
Orlando Fatibello-Filho ◽  
Heberth Juliano Vieira
Keyword(s):  
Flow Injection ◽  
Sampling Rate ◽  
Alizarin Red S ◽  
Injection System ◽  
Borate Buffer Solution ◽  
Buffer Solution ◽  
Solution Ph ◽  
Alizarin Red ◽  
Relative Standard

A spectrophotometric flow injection method for the determination of Zn(II) in ophthalmic formulations was developed. In this work, Zn(II) ion was complexed with Alizarin red S in borate buffer solution (pH 9.0) and the chromophore produced was monitored at 520 nm. The analytical curve was linear in the Zn(II) concentration range from 6.05 x 10-6 to 1.50 x 10-4 mol L-1 with a detection limit of 3.60 x 10-6 mol L-1. Recoveries ranged from 96.3 to 105 % and a relative standard deviation of 1.2 % (n = 10) for 5.5x10-5 mol L-1 Zn(II) reference solution were obtained. The sampling rate was 60 h-1 and the results obtained of Zn(II) in ophthalmic products using this procedure are in close agreement with those obtained using a comparative spectrophotometric procedure at 95 % confidence level.

scholarly journals Spectrophotometric flow injection system for determination of Zn2+ in ophthalmic formulations using Alizarin red S

2009 ◽  
Vol 34 (2) ◽  
pp. 67-72 ◽  
Author(s):  
Orlando Fatibello-Filho ◽  
Heberth Juliano Vieira
Keyword(s):  
Flow Injection ◽  
Sampling Rate ◽  
Alizarin Red S ◽  
Injection System ◽  
Borate Buffer Solution ◽  
Buffer Solution ◽  
Solution Ph ◽  
Alizarin Red ◽  
Relative Standard

A spectrophotometric flow injection method for the determination of Zn(II) in ophthalmic formulations was developed. In this work, Zn(II) ion was complexed with Alizarin red S in borate buffer solution (pH 9.0) and the chromophore produced was monitored at 520 nm. The analytical curve was linear in the Zn(II) concentration range from 6.05 x 10-6 to 1.50 x 10-4 mol L-1 with a detection limit of 3.60 x 10-6 mol L-1. Recoveries ranged from 96.3 to 105 % and a relative standard deviation of 1.2 % (n = 10) for 5.5x10-5 mol L-1 Zn(II) reference solution were obtained. The sampling rate was 60 h-1 and the results obtained of Zn(II) in ophthalmic products using this procedure are in close agreement with those obtained using a comparative spectrophotometric procedure at 95 % confidence level.

Flow-injection spectrofluorimetric determination of boron using Alizarin red S in aqueous solution

1993 ◽  
Vol 282 (3) ◽  
pp. 643-646 ◽  
Author(s):  
N. Chimpalee ◽  
D. Chimpalee ◽  
B. Boonyanitchayakul ◽  
D.Thorburn Burns
Keyword(s):  
Aqueous Solution ◽  
Flow Injection ◽  
Alizarin Red S ◽  
Alizarin Red ◽  
Spectrofluorimetric Determination
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