Trace Elements

Contents


Typical Detection Limits and Count Times on the Electron Microprobe

element (x-ray line) matrix voltage (KeV) current (nA) CDL (ppm) count time (sec)
Al (Ka) quartz 20 100 20 640
Fe (Ka) quartz 20 100 30 640
Ge (Ka) Fe-Ni meteorite 35 200 20 1800
C (Ka) Fe 10 50 300 1800
Ca (Ka) olivine 15 200 13 2400
Al (Ka olivine 15 200 18 2400
Ti (Ka olivine 15 200 25 2400
Cr (Ka olivine 15 200 13 2400
Mn (Ka) olivine 15 200 14 2400
Ni (Ka) olivine 15 200 14 2400
P (Ka) olivine 15 200 14 2400
Na (Ka) olivine 15 200 13 2400

 

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