Mississippi (dissolved osmium)
Mississippi basin, United States
Rivers and surface water
- Type
- River or surface water
River quoted by Sharma et al. (1999, Table 1) as a comparison for Himalayan rivers. Sampled in the Mississippi delta (site 34 of Andersson et al., 1994), basin of Paleozoic sediments, glacial deposits and loess (Sharma and Wasserburg, 1997).
187Os/188Os isotope ratio, no unit Values of the same system
Standard : Rapport absolu, sans standard de référence
| Value | Range | n | Mineral or matrix | Source |
|---|---|---|---|---|
| 1.25 | 2 | river water (dissolved load) Best estimate 187Os/186Os = 10.4 ± 0.1, extrapolated to zero blank from two aliquots of one sample (2 and 6 kg): 8.4 ± 0.5 and 9.8 ± 0.2 after blank correction, i.e. about 1.01 and 1.18 as 187Os/188Os. The difference between aliquots exceeds the uncertainties: the slope gives a blank of 8.6 fmol 192Os, three times the measured blank (31 % yield or underestimated blank). Dissolved Os 36.9 ± 2.5 and 45.1 ± 0.8 fmol/kg; the authors keep about 45 fmol/kg as the most reliable value for river osmium. With the normal 186Os/188Os ratio of Table 1 (0.11995), one would get 1.25, 1.73, 1.06 and 1.28 for the Mississippi, Columbia, Connecticut and Vistula. | Sharma & Wasserburg (1997), Osmium in the rivers, Geochimica et Cosmochimica Acta 61(24):… |
Deposits of the same type
- Missouri at Columbia United States
- Rio Grande (upper basin) United States
- Ottawa River at Chenaux Canada
- Connecticut (dissolved osmium) United States
- Columbia (dissolved osmium) United States
- Rio Negro at Manaus Brazil
- Solimões at Manaus Brazil
- Amazon Brazil
Cite this page
IsoFind Atlas (2026). Mississippi (dissolved osmium), isotope signatures. https://www.isofind.tech/isotopes/en/sites/mississippi-osmium-dissous/ (accessed 2026-10-20).
@misc{isofind2026mississippidissolvedosmiumiso,
title = {Mississippi (dissolved osmium), isotope signatures},
author = {{IsoFind Atlas}},
year = {2026},
url = {https://www.isofind.tech/isotopes/en/sites/mississippi-osmium-dissous/},
note = {Accessed 2026-10-20}
}Updated : 2026-10-20