SABER UCV >
1) Investigación >
Artículos Publicados >

Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/123456789/3961

Título : Influence of the practical resolution on limits of detection using high line number gratings in inductively coupled plasma atomic emission spectrometry
Autor : MERMET, J. M.
CARRE, M.
Fernández, Alberto
MURILLO, M.
Palabras clave : Influence
practical resolution
limits of detection
gratings
inductively
plasma
Fecha de publicación : 1991
Editorial : Spectrochimica Acta
Citación : Vol. 46B;6/7
Resumen : The signal to background ratio and the relative standard deviation (RSD) of the background were studied in order to optimize the limits of detection in inductively coupled plasma atomic emission spectrometry. Czerny-Turner type monochromators equipped with high line number gratings (2400 and 3600 line mm-t) working in the first and second orders were used. Because of the hiqh incident and diffraction angles, leading to a magnification factor different from one, the influence of the slit width adjustment was studied. Symmetrical and asymmetrical slit widths were considered. It is shown that high signal to background ratios were obtained with slit widths of 10 km. A degradation of the RSD of the background was observed for the narrow slit widths. This was not due to the dark current noise of the photomultiplier tube but rather to the limited number of photons. A longer integration time could alleviate this limitation. This was illustrated for the Cd I 228 nm line, which is one of the narrowest observed in this radiation source.
URI : http://saber.ucv.ve/jspui/handle/123456789/3961
ISSN : 1386-1425
Aparece en las colecciones: Artículos Publicados

Ficheros en este ítem:

Fichero Descripción Tamaño Formato
mermet 1991.pdf796.32 kBAdobe PDFVisualizar/Abrir

Los ítems de DSpace están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2008 MIT and Hewlett-Packard - Comentarios