id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ecletica-264	Fatibello-Filho, Orlando; Vieira, Heberth Juliano	Spectrophotometric flow injection system for determination of Zn2+ in ophthalmic formulations using Alizarin red S	2009	6	.pdf	application/pdf	3149	172	58	Determination of Zn2+ in commercial formulations by using flow procedure and comparative batch procedure [29] Samples Zn2+ (mg mL-1) Relative error (%)Comparative Proposed flow procedure A B C 0.069 ± 0.003 0.602 ± 0.003 0.126 ± 0.002 0.071 ± 0.001 0.585 ± 0.002 0.129 ± 0.001 2,9 -2.8 2.4 n=3, mean ± standard deviation; Re1, relative error between proposed flow procedure vs. comparative method. The effect of Alizarin red S solution on the analytical signal was studied between 7.5x10-5 and 4.7x10-4 mol L-1 using a 1.6x10-2 mol L-1 bora- te buffer (pH 9.0).	cache/ecletica-264.pdf	txt/ecletica-264.txt