A study of the factors that influence the interference of Fe (III) in the colourimetric analysis of Cr (VI), in polluted waters
Fuente:
Redalyc
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Artículo científico |
| Sprache: | en |
| Veröffentlicht: |
Universidad Nacional Autónoma de México
1987
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1876442818448195584 |
|---|---|
| author | Silvia Castillo-Blum |
| author_facet | Silvia Castillo-Blum |
| contents | A study of the factors that influence the interference of Fe (III) in the colourimetric analysis of Cr (VI), in polluted waters Silvia Castillo-Blum Mario Villalobos-Peñalosa Margarita E. Gutiérrez-Ruiz Ciencias de la Tierra The interference of Fe(II1) in the photometric determination of Cr (VI) in water using thediphenylcarbazide method was studied, and the following factors which affected it wereanalyzed: pH, temperature, sequence in the addition of reagents, contact time betweenFe (111) and Cr (VI) before analysis, and elapsed time for colour development. The mostimportant factor proved to be the contact time, as at least one Fe (111)-Cr(V1) species isfonned, in basic, neutral or slightly acid medía. This fact explains the contradictionsfound in literature concerning the existence and magnitude of the interference. Therefore,the separation of Fe (111) or the use of other methods to analyze Cr (VI)-polluted waterswhich also contain Fe (III), is recommended. 1987 artículo científico 0188-4999 https://www.redalyc.org/articulo.oa?id=37030101 en http://www.redalyc.org/revista.oa?id=370 Revista Internacional de Contaminación Ambiental application/pdf Universidad Nacional Autónoma de México Revista Internacional de Contaminación Ambiental (México) Num.1 Vol.3 |
| format | Artículo científico |
| id | redalyc_37030101 |
| institution | Redalyc |
| language | en |
| publishDate | 1987 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | A study of the factors that influence the interference of Fe (III) in the colourimetric analysis of Cr (VI), in polluted waters Silvia Castillo-Blum Ciencias de la Tierra A study of the factors that influence the interference of Fe (III) in the colourimetric analysis of Cr (VI), in polluted waters Silvia Castillo-Blum Mario Villalobos-Peñalosa Margarita E. Gutiérrez-Ruiz Ciencias de la Tierra The interference of Fe(II1) in the photometric determination of Cr (VI) in water using thediphenylcarbazide method was studied, and the following factors which affected it wereanalyzed: pH, temperature, sequence in the addition of reagents, contact time betweenFe (111) and Cr (VI) before analysis, and elapsed time for colour development. The mostimportant factor proved to be the contact time, as at least one Fe (111)-Cr(V1) species isfonned, in basic, neutral or slightly acid medía. This fact explains the contradictionsfound in literature concerning the existence and magnitude of the interference. Therefore,the separation of Fe (111) or the use of other methods to analyze Cr (VI)-polluted waterswhich also contain Fe (III), is recommended. 1987 artículo científico 0188-4999 https://www.redalyc.org/articulo.oa?id=37030101 en http://www.redalyc.org/revista.oa?id=370 Revista Internacional de Contaminación Ambiental application/pdf Universidad Nacional Autónoma de México Revista Internacional de Contaminación Ambiental (México) Num.1 Vol.3 |
| title | A study of the factors that influence the interference of Fe (III) in the colourimetric analysis of Cr (VI), in polluted waters |
| topic | Ciencias de la Tierra |
| url | https://www.redalyc.org/articulo.oa?id=37030101 |