Considerations for sampling inorganic constituents in ground water using diffusion samplers
By: D. A. Vroblesky, M.D. Petkewich, and T.R. Campbell
Edited by: Gavaskar A.R.Chen A.S.C.
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Abstract
Data indicate that nylon-screen and dialysis diffusion samplers are capable of obtaining concentrations of inorganic solutes in ground water from wells that closely correspond to concentrations obtained by low-flow sampling. Conservative solutes, such as chloride, can be sampled by filling the diffusion samplers with oxygenated water. The samplers should be filled with anaerobic water for sampling redoxsensitive solutes. Oxidation of iron within the samplers, either by using aerobic fill water or by in-well oxygenation events, can lead to erroneous iron concentrations. Lithologic and chemical heterogeneity and sampler placement depth can lead to differences between concentrations from diffusion samples and low-flow samples because of mixing during pumping. A disadvantage of regenerated cellulose dialysis samplers is that they can begin to biodegrade within the two weeks of deployment. Nylon-screen samplers buried beneath streambed sediment along the unnamed tributary in a discharge zone of arseniccontaminated ground water were useful in locating the specific discharge zone.
| Publication type | Conference Paper |
|---|---|
| Publication Subtype | Conference Paper |
| Title | Considerations for sampling inorganic constituents in ground water using diffusion samplers |
| ISBN | 1574771329 |
| Year Published | 2002 |
| Language | English |
| Larger Work Title | Proceedings of the Third International Conference on Remediation of Chlorinated and Recalcitrant Compounds |
| First page | 343 |
| Last page | 349 |
| Conference Title | Proceedings of the Third International Conference on Remediation of Chlorinated and Recalcitrant Compounds |
| Conference Location | Monterey, CA. |
| Conference Date | 20 May 2002 through 23 May 2002 |
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