Investigation of Water Safety in Non-treated Drinking Water with Trace Toxic Metals
Toxicological Research
; : 211-215, 2013.
Article
en En
| WPRIM
| ID: wpr-193672
Biblioteca responsable:
WPRO
ABSTRACT
The trace toxic metal copper was assayed using mercury immobilized on a carbon nanotube electrode (MCW), with a graphite counter and a reference electrode. In this study, a macro-scale convection motor was interfaced with a MCW three-electrode system, in which a handmade MCW was optimized using cyclic-and square-wave stripping voltammetry. An analytical electrolyte for tap water was used instead of an expensive acid or base ionic solution. Under these conditions, optimum parameters were 0.09 V amplitude, 40 Hz frequency, 0.01 V incremental potential, and a 60-s accumulation time. A diagnostic working curve was obtained from 50.0 to 350 microg/L. At a constant Cu(II) concentration of 10.0 microg/L, the statistical relative standard deviation was 1.78% (RSD, n = 15), the analytical accumulation time was only 60 s, and the analytical detection limit approached 4.6 microg/L (signal/noise = 3). The results were applied to non-treated drinking water. The content of the analyzed copper using 9.0 and 4.0 microg/L standards were 8.68 microg/L and 3.96 microg/L; statistical values R2 = 0.9987 and R2 = 0.9534, respectively. This method is applicable to biological diagnostics or food surveys.
Palabras clave
Texto completo:
1
Base de datos:
WPRIM
Asunto principal:
Compuestos Organotiofosforados
/
Estándares de Referencia
/
Agua Potable
/
Convección
/
Cobre
/
Nanotubos de Carbono
/
Diagnóstico
/
Ingestión de Líquidos
/
Electrodos
/
Límite de Detección
Tipo de estudio:
Diagnostic_studies
/
Guideline
Idioma:
En
Revista:
Toxicological Research
Año:
2013
Tipo del documento:
Article