Science. 1990 Mar 30;247(4950):1569-72. doi: 10.1126/science.247.4950.1569.
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.
通过扫描电子显微镜、压汞法和荧光技术对马萨诸塞州鳕鱼角含水层中的砂级物质的颗粒内孔隙进行定量分析表明，反应点更多，孔隙度大于标准短期实验室测试和测量技术所指示的。实验室和现场示踪剂测试的结果表明，对于一种反应离子，存在溶质非平衡，这与扩散进入颗粒内部并在其中进行交换的模型一致。这些数据表明，扩散表达式需要包含在传输代码中，特别是对于放射性和有毒废物的传输模拟。
