Intragranular Diffusion: An Important Mechanism Influencing Solute Transport in Clastic Aquifers?
Quantification of intragranular porosity in sand-size material from an aquifer on Cape Cod, Massachusetts, by scanning electron microscopy, mercury injection, and epifluorescence techniques shows that there are more reaction sites and that porosity is greater than indicated by standard short-term la...
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| Veröffentlicht in: | Science (American Association for the Advancement of Science) 1990-03, Vol.247 (4950), p.1569-1572 |
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| creator | Wood, Warren W. Kraemer, Thomas F. Hearn, Paul P. |
| description | Quantification of intragranular porosity in sand-size material from an aquifer on Cape Cod, Massachusetts, by scanning electron microscopy, mercury injection, and epifluorescence techniques shows that there are more reaction sites and that porosity is greater than indicated by standard short-term laboratory tests and measurement techniques. Results from laboratory and field tracer tests show solute nonequilibrium for a reacting ion consistent with a model of diffusion into, and exchange within, grain interiors. These data indicate that a diffusion expression needs to be included in transport codes, particularly for simulation of the transport of radioactive and toxic wastes. |
| doi_str_mv | 10.1126/science.247.4950.1569 |
| format | Article |
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Results from laboratory and field tracer tests show solute nonequilibrium for a reacting ion consistent with a model of diffusion into, and exchange within, grain interiors. 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Results from laboratory and field tracer tests show solute nonequilibrium for a reacting ion consistent with a model of diffusion into, and exchange within, grain interiors. These data indicate that a diffusion expression needs to be included in transport codes, particularly for simulation of the transport of radioactive and toxic wastes.</description><subject>Aquifers</subject><subject>Chemistry</subject><subject>Electric fields</subject><subject>Feldspars</subject><subject>Freshwater</subject><subject>Geology</subject><subject>Groundwater</subject><subject>Hydrogeology</subject><subject>Molecules</subject><subject>Porosity</subject><subject>Quartz</subject><subject>Scanning electron microscopes</subject><subject>Sediments</subject><subject>Soil 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P.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Intragranular Diffusion: An Important Mechanism Influencing Solute Transport in Clastic Aquifers?</atitle><jtitle>Science (American Association for the Advancement of Science)</jtitle><addtitle>Science</addtitle><date>1990-03-30</date><risdate>1990</risdate><volume>247</volume><issue>4950</issue><spage>1569</spage><epage>1572</epage><pages>1569-1572</pages><issn>0036-8075</issn><eissn>1095-9203</eissn><coden>SCIEAS</coden><abstract>Quantification of intragranular porosity in sand-size material from an aquifer on Cape Cod, Massachusetts, by scanning electron microscopy, mercury injection, and epifluorescence techniques shows that there are more reaction sites and that porosity is greater than indicated by standard short-term laboratory tests and measurement techniques. 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| ispartof | Science (American Association for the Advancement of Science), 1990-03, Vol.247 (4950), p.1569-1572 |
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| source | American Association for the Advancement of Science; Jstor Complete Legacy |
| subjects | Aquifers Chemistry Electric fields Feldspars Freshwater Geology Groundwater Hydrogeology Molecules Porosity Quartz Scanning electron microscopes Sediments Soil permeability Solutes Teeth |
| title | Intragranular Diffusion: An Important Mechanism Influencing Solute Transport in Clastic Aquifers? |
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