Open-File Report 2007–1126
U.S. GEOLOGICAL SURVEY
Open-File Report 2007–1126
Table 2. Lower reporting limits for analyses by 10-element ICP-AES in the U.S. Gelogical Suvey and XRAL laboratories.
[Abbreviations: ICP-AES, inductively coupled plasma atomic emission spectrometry; ppm, parts per million]
| Element | Lower reporting limit (ppm) | ||
|---|---|---|---|
| XRAL | U.S. Geological Survey | ||
| Through 1993 |
From 1994 |
||
| Antimony, Sb | 1 | 0.67 | 1.0 |
| Arsenic, As | 1 | .67 | 1.0 |
| Bismuth, Bi | 1 | .67 | 1.0 |
| Cadmium, Cd | .05 | .05 | .05 |
| Copper, Cu | .05 | .05 | .05 |
| Gold, Au | .1 | .1 | .1 |
| Lead, Pb | 1 | .67 | 1.0 |
| Molybdenum, Mo | .1 | .06 | 1.0 |
| Silver, Ag | .08 | .067 | .08 |
| Zinc, Zn | .05 | .03 | .03 |
U.S.
Department of the Interior | U.S. Geological
Survey
URL: https://pubs.usgs.gov/of/2007/1126/
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