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Considerations for sampling inorganic constituents in ground water using diffusion samplers

By:
, ,
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.

Additional Publication Details

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
First page:
343
Last page:
349
Number of Pages:
7
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