x-ray fluorescence spectrometer

[John Collins]

Is there anyone out there with an x-ray fluorescence spectrometer who 
would be generous enough to identify a protein-bound metal ion, using 
only microgram quantities of sample?

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*  John H. Collins, Ph.D.                          *
*  Professor                                       *
*  Medical Biotechnology Center                    *
*  University of Maryland Biotechnology Institute  *  
*  108 N. Greene Street                            *
*  Baltimore, MD 21201-1503                        *
*  USA                                             *
*  tel: 410-706-8102                               *
*  fax: 410-706-7364                               *
*  e-mail: collins at umbi.umd.edu                    *
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