John D. is quite right about the importance of including a blank standard.
I'm looking for a good pyrite blank too - i.e. known very low concentrations of trace elements, perhaps by LA-ICP-MS.
Also, watch out for microinclusions in the pyrites. Some of the trace elements tend to concentrate there.
John Donovan wrote:
> Hi Ken,
> For best accuracy you'll instead want to measure a "blank standard". Something which has Co below one's detection limit, and the idea is to see if one can measure zero.
> See my paper here:
> And this forum topic here:
> On 12/18/2017 11:26 AM, Ken Severin wrote:
>> Hi all - I'm looking for standard(s) to use for low levels (few hundred ppm) Co in pyrite. Any suggestions for either calibration or check standards?
>> Ken Severin
Dr. Stephen C. Kuehn
Manager, Electron Microprobe Facility & Tephra Lab
Science building, Room 106
1000 Vermillion St
PO Box 1000, Campus Box F20
Athens, WV 24712-1000
[log in to unmask] [log in to unmask]
ORCID ID orcid.org/0000-0002-2918-980X
JEOL Probe Users Listserver
Moderator: Anette von der Handt, [log in to unmask],
Electron Microprobe Lab, University of Minnesota
Post a message: send your message to [log in to unmask]
Unsubscribe: send "SIGNOFF PROBEUSERS" to [log in to unmask]
On-line help and FAQ: http://probelab.geo.umn.edu/jeoluserlist.html