Javier,
    There is no single formula -- it depends on the level of uncertainty that you wish to consider.  Read for instance the material in Goldstein, J.I., Newbury, D.E., Echlin, P., Joy, D.C., Romig, A.D. Jr., Lyman, C.E., Fiori, C. and Lifshin, E. (1992)  Scanning Electron Microscopy and X-Ray Microanalysis.  A Text for Biologists, Materials Scientists and Geologists, 2nd ed., Plenum Press.
eric



Dear all,

I am loocking for the formula to calculate the detection limits of analyses
using microprobe. Could anybody suggest me any reference?.
Thank you very much in advanced for your help.
Javier
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Francisco Javier Carrillo Rosúa
Instituto Andaluz de Ciencias de la Tierra (Universidad de Granada-C.S.I.C.)
Facultad de Ciencias. Avenida de Fuentenueva s/n 18002 Granada. ESPAÑA
Tlfno: 958 248535; Fax: 958 243368
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