Determination of sulfate in seawater and natural brines by 133Ba and membrane dialysis
Limnology and Oceanography
By: William E. Seyfried, Robert J. Rosenbauer, and James L. Bischoff
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Abstract
Dissolved sulfate is determined by precipitation with the radioisotope 133Ba and counting of the precipitate on a scintillation counter. Precipitation is carried out in dialysis bags; excess 133 Ba is removed via diffusion by soaking the bags in distilled water for 12 h, and the bags are then placed directly in the well of the scintillation counter. The procedure eliminates previous errors caused by washing and transferring of the precipitate and permits analysis of 0.5–3,000 µg·ml−1 sulfate in a 1.0-ml sample. The detection limit is increased by simply increasing the sample volume up to 5.0 ml. The technique is interference-free in natural waters ranging from freshwater to brines of 1.5 times the salinity of seawater.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Determination of sulfate in seawater and natural brines by 133Ba and membrane dialysis |
| Series title | Limnology and Oceanography |
| DOI | 10.4319/lo.1979.24.2.0393 |
| Volume | 24 |
| Issue | 2 |
| Year Published | 1979 |
| Language | English |
| Publisher | Association for the Sciences of Limnology and Oceanography |
| Contributing office(s) | Pacific Coastal and Marine Science Center |
| Description | 4 p. |
| First page | 393 |
| Last page | 396 |
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