Evaluation and use of a diffusion-controlled sampler for determining chemical and dissolved oxygen gradients at the sediment-water interface
Hydrobiologia
By: N.S. Simon, M.M. Kennedy, and C.S. Massoni
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Abstract
Field and laboratory evaluations were made of a simple, inexpensive diffusion-controlled sampler with ports on two sides at each interval which incorporates 0.2-??m polycarbonate membrane to filter samples in situ. Monovalent and divalent ions reached 90% of equilibrium between sampler contents and the external solution within 3 and 6 hours, respectively. Sediment interstitial water chemical gradients to depths of tens of centimeters were obtained within several days after placement. Gradients were consistent with those determined from interstitial water obtained by centrifugation of adjacent sediment. Ten milliliter sample volumes were collected at 1-cm intervals to determine chemical gradients and dissolved oxygen profiles at depth and at the interface between the sediment and water column. The flux of dissolved species, including oxygen, across the sediment-water interface can be assessed more accurately using this sampler than by using data collected from benthic cores. ?? 1985 Dr W. Junk Publishers.
Suggested Citation
Simon, N., Kennedy, M., and Massoni, C., 1985, Evaluation and use of a diffusion-controlled sampler for determining chemical and dissolved oxygen gradients at the sediment-water interface: Hydrobiologia, v. 126, no. 2, p. 135-141, https://doi.org/10.1007/BF00008680.
ISSN: 1573-5117 (online)
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Evaluation and use of a diffusion-controlled sampler for determining chemical and dissolved oxygen gradients at the sediment-water interface |
| Series title | Hydrobiologia |
| DOI | 10.1007/BF00008680 |
| Volume | 126 |
| Issue | 2 |
| Publication Date | July 01, 1985 |
| Year Published | 1985 |
| Language | English |
| Publisher location | Kluwer Academic Publishers |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Hydrobiologia |
| First page | 135 |
| Last page | 141 |