APPLICATION OF 4-(2-PYRIDYLAZO)RESORCINOL FOR FLOTATION-SPECTROPHOTOMETRIC DETERMINATION OF IRON

被引：2

作者：

Toncheva, Galya K. ^{[1
]}

Gavazov, Kiril B. ^{[1
]}

Georgieva, Zlatka G. ^{[1
]}

Dospatliev, Lilko K. ^{[2
]}

Peltekov, Alexander B. ^{[3
]}

Boyanov, Boyan S. ^{[1
]}

机构：

[1] Univ Plovdiv Paisii Hilendarski, Fac Chem, 24 Tsar Assen Str, Plovdiv 4000, Bulgaria

[2] Trakia Univ, Dept Pharmacol, Fac Vet Med, Stara Zagora 6000, Bulgaria

[3] Agr Univ Plovdiv, Lab Complex,12 Mendeleev Str, Plovdiv 4000, Bulgaria

来源：

BULLETIN OF THE CHEMICAL SOCIETY OF ETHIOPIA | 2016年 / 30卷 / 03期

关键词：

Iron(II); Fe-PAR complex; Flotation; Spectrophotometry; Soils; Zinc sulfide concentrates; RESORCINOL; IRON(III); COMPLEX; 4-(2-THIAZOLYLAZO)RESORCINOL; EXTRACTION; PAR;

D O I：

10.4314/bcse.v30i3.1

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Optimum conditions for flotation-spectrophotometric determination of iron with 4-(2-pyridylazo) resorcinol (PAR) based on a 1: 2 Fe-II-PAR complex were found to be as follows: flotation solvent (chloroform), shaking time (2 min), pH (4.5. 0.5), concentration of PAR (2.0x10(-4) mol L-1), reducing agent (hydroxylamine hydrochloride), solvent for the floated compound (dimethylsulphoxide, DMSO), wavelength for spectrophotometric measurements (718 nm), and volumes of the organic solvents (5 mL of chloroform and 3 mL of DMSO). Calibration graphs were compared for different volumes of the aqueous phase -10 mL and 40 mL; the corresponding linear ranges were 0.30-1.3 mu g mL(-1) and 0.25-1.0 mu g mL(-1). The iron content was successfully determined in soil samples, reference standard materials (PS-1, COOMET No. 0001-1999 BG, S.D No. 310.-98; PS-2, COOMET No. 0002-1999 BG, SOD No. 311.-98; and PS-3, COOMET No. 0003-1999 BG, SOD No. 312.98) and zinc sulfide concentrates.

引用

页码：325 / 332

页数：8

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