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Eclética Química, ISSN 0100-4670, 2002, Volume 27, Issue 1
Pelo uso de técnicas mais baratas, como a do SDDC, é possível determinar níveis traços de arsênio em cabelo; entretanto esta técnica apresenta alguns... 
Journal Article
Journal of the Brazilian Chemical Society, ISSN 0103-5053, 1999, Volume 10, Issue 6, pp. 519 - 522
A sensitive and selective spectrophotometric method is proposed for the rapid determination of uranium using 2-(2- Thiazolylazo)-p-Cresol (TAC). The reaction... 
2-(2-thiazolylazo)-p-cresol | Uranium determination | Spectrophotometry | Surfactants | spectrophotometry | REAGENT | surfactants | ANALYTICAL-CHEMISTRY | uranium determination | MICELLES | CHEMISTRY, MULTIDISCIPLINARY | 2-(2-Thiazolylazo)-p-Cresol
Journal Article
Spectrochimica Acta Part B: Atomic Spectroscopy, ISSN 0584-8547, 2005, Volume 60, Issue 5, pp. 653 - 658
A simple and efficient procedure for separation and pre-concentration using ultrasound-assisted co-precipitation with manganese dioxide was developed for Pb... 
Lead | Ultrasonic irradiation | Co-precipitation | Pre-concentration | PRECONCENTRATION | TRACE-ELEMENTS | EXTRACTION | SPECTROSCOPY | co-precipitation | pre-concentration | ATOMIC-ABSORPTION-SPECTROMETRY | SEPARATION | SEAWATER | ultrasonic irradiation | lead | Analysis | Spectrum analysis | Manganese
Journal Article
Journal of the Brazilian Chemical Society, ISSN 0103-5053, 1999, Volume 10, Issue 1, pp. 46 - 50
A sensitive and selective spectrophotometric method is proposed for the rapid determination of zinc(II) using an 8-hydroxyquinoline derivative,... 
Zinc determination | 7-(4-nitrophenylazo)-8-hydroxyquinoline-5-sulphonic acid | CHEMISTRY, MULTIDISCIPLINARY | zinc determination
Journal Article
Química Nova, ISSN 0100-4042, 01/2002, Volume 25, Issue 6b, pp. 1086 - 1090
The aim of this work was to explore the possibility of the application of a non-ionic resin obtained by impregnation of Alizarin Red S (VAS) in Amberlite XAD-7... 
separation | solid phase | metallic ions
Journal Article
Química Nova, ISSN 0100-4042, 04/2000, Volume 23, Issue 2, pp. 155 - 160
Journal Article
Ecletica Quimica, ISSN 0100-4670, 2002, Volume 27, pp. 155 - 170
Pelo uso de técnicas mais baratas, como a do SDDC, é possível determinar níveis traços de arsênio em cabelo; entretanto esta técnica apresenta alguns... 
Hair | Silver diethyldithiocarbamate | Triethanolamine | Arsenic | CHEMISTRY, MULTIDISCIPLINARY
Journal Article
Journal of Pharmaceutical and Biomedical Analysis, ISSN 0731-7085, 2004, Volume 34, Issue 3, pp. 543 - 549
In this work, a new solid phase spectrophotometric method in association with flow injection analysis for Vitamin B-6 (pyridoxine) determination has been... 
Vitamin B 6 | Flow injection analysis | Solid phase spectrophotometry | flow injection analysis | CALIBRATION | CHEMISTRY, ANALYTICAL | PYRIDOXINE | Vitamin B-6 | NICKEL | PHARMACOLOGY & PHARMACY | solid phase spectrophotometry | WATERS | SPECTROFLUOROMETRIC DETERMINATION | ZINC
Journal Article
Journal of Pharmaceutical and Biomedical Analysis, ISSN 0731-7085, 02/2004, Volume 34, Issue 3, pp. 543 - 549
In this work, a new solid phase spectrophotometric method in association with flow injection analysis for Vitamin B (pyridoxine) determination has been... 
Vitamin B | Flow injection analysis | Solid phase spectrophotometry | Flow Injection Analysis - methods | Vitamin B 6 - analysis | Vitamin B 6 - chemistry | Spectrophotometry, Ultraviolet - methods | Chemistry, Pharmaceutical
Journal Article
Química Nova, ISSN 0100-4042, 04/2000, Volume 23, Issue 2, pp. 155 - 160
The present work proposes the application of the 4-Hidroxy-3-(2-hydroxynaphtylazo)-benzenesulphonic acid (C.I. 15670), Alizarine Violet N (AVN), as a reagent... 
spectrophotometry | tensoatives | aluminium
Journal Article
Mikrochimica Acta, ISSN 0026-3672, 9/2001, Volume 137, Issue 1, pp. 29 - 33
A new sensitive method exploiting solid-phase spectrophotometry is proposed for the determination of cobalt in pharmaceutical preparations. The chromogenic... 
pharmaceutical preparations | solid-phase spectrophotometry | 1-(2-thiazolylazo)-2-naphthol | Cobalt determination | Pharmaceutical preparations | Solid-phase spectrophotometry | PRECONCENTRATION | REAGENT | CHEMISTRY, ANALYTICAL | COMPLEX | SORBENT EXTRACTION | SENSOR | FLOW | MIXTURES | cobalt determination | VANADIUM | VITAMIN-B-12 | SEPARATION
Journal Article
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