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| Titel: |
Pollution of Cazones River, Veracruz, México during october 2004-june 2005 season |
| Auteur: |
José Angel GALINDO Laura VÁSQUEZ CASTÁN Miguel Angel CRUZ LUCAS Marisela LÓPEZ ORTEGA Pablo SAN MARTÍN DEL ANGEL |
| Verschenen in: |
Revista científica UDO agrícola |
| Paginering: | Jaargang 5 (2005) nr. 1 pagina's 74-80 |
| Jaar: |
2005 |
| Inhoud: |
There are few studies about the pollution in the Cazones River. For this reason the main objective of this research is toevaluate the pollution levels of the river taking into consideration microbiological pollutants in water, and heavy metals insediments. The following physicochemical and biological parameters were taken: conductivity, salinity, SDT; pH; chlorideby Mohr method; alkalinity for the volumetric method; water hardness by means of the EDTA; total and fecal coliformbacteria for the technique of MNP/100 ml; mesofilos; fatty and oils by the Soxhlet method and heavy metals by atomicabsorption. We sampled the river in the area located between the refinery “Escolin” and the residential houses known as“Infonavit Gaviotas”. We took 9 samples for water analyses that were taken monthly from October to June, and 3 samplesfor sediments (autumn, winter, and spring). The biological parameters in the water do not exceed the limits established byMexican regulations. The samples taken from the sediments showed that fats and oils exceed the limits permitted by thelaw, and heavy metals do not exceeded the limits established by the Mexican law (NOM-001-ECOL-1996 y NOM-004-SEMARNAT-2002). |
| Uitgever: |
Universidad de Oriente Press (provided by DOAJ) |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 140 van 185 gevonden artikelen
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