Soil water dye tracing,with special reference to the use of rhodamine WT,lissamine FF and amino G acid |
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| Authors: | S T Trudgill |
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| Abstract: | Three fluorescent dyes (Rhodamine WT, Lissamine FF and Amino G Acid) are compared for use in soil water tracing. Severe limitations are evident, but practical applications are possible. Background fluorescence, adsorption, desorption, pH and other non-adsorptive effects are reviewed in the contexts of soil column work and field tracing of soil water. Lissamine FF and Amino G Acid are to be preferred for soil column work because of their lower adsorption; Rhodamine WT exhibits higher adsorption but is useful in field situations where organic fluorescence backgrounds are high. Semi-quantitative work may be undertaken in soil columns once a priming and flushing procedure has been adopted. |
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| Keywords: | Dye tracing Rhodamine WT Lissamine FF Amino G Acid |
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