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Measuring Fluorescent Dye in the Bubbly and Sediment-Laden Surfzone
Decisions about recreational beach closures would be enhanced if better estimates of surfzone contaminant transport and dilution were available. In situ methods for measuring fluorescent Rhodamine WT dye tracer in the surfzone are presented, increasing the temporal and spatial resolution over previo...
Autores principales: | , , , |
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Formato: | Texto |
Lenguaje: | English |
Publicado: |
Springer Netherlands
2009
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2773363/ https://www.ncbi.nlm.nih.gov/pubmed/19898671 http://dx.doi.org/10.1007/s11270-009-0030-z |
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author | Clark, David B. Feddersen, Falk Omand, Melissa M. Guza, R. T. |
author_facet | Clark, David B. Feddersen, Falk Omand, Melissa M. Guza, R. T. |
author_sort | Clark, David B. |
collection | PubMed |
description | Decisions about recreational beach closures would be enhanced if better estimates of surfzone contaminant transport and dilution were available. In situ methods for measuring fluorescent Rhodamine WT dye tracer in the surfzone are presented, increasing the temporal and spatial resolution over previous surfzone techniques. Bubbles and sand suspended by breaking waves in the surfzone interfere with in situ optical fluorometer dye measurements, increasing the lower bound for dye detection (≈ 1 ppb) and reducing (quenching) measured dye concentrations. Simultaneous turbidity measurements are used to estimate the level of bubble and sand interference and correct dye estimates. After correction, root-mean-square dye concentration errors are estimated to be < 5% of dye concentration magnitude, thus demonstrating the viability of in situ surfzone fluorescent dye measurements. The surfzone techniques developed here may be applicable to other environments with high bubble and sand concentrations (e.g., cascading rivers and streams). |
format | Text |
id | pubmed-2773363 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2009 |
publisher | Springer Netherlands |
record_format | MEDLINE/PubMed |
spelling | pubmed-27733632009-11-06 Measuring Fluorescent Dye in the Bubbly and Sediment-Laden Surfzone Clark, David B. Feddersen, Falk Omand, Melissa M. Guza, R. T. Water Air Soil Pollut Article Decisions about recreational beach closures would be enhanced if better estimates of surfzone contaminant transport and dilution were available. In situ methods for measuring fluorescent Rhodamine WT dye tracer in the surfzone are presented, increasing the temporal and spatial resolution over previous surfzone techniques. Bubbles and sand suspended by breaking waves in the surfzone interfere with in situ optical fluorometer dye measurements, increasing the lower bound for dye detection (≈ 1 ppb) and reducing (quenching) measured dye concentrations. Simultaneous turbidity measurements are used to estimate the level of bubble and sand interference and correct dye estimates. After correction, root-mean-square dye concentration errors are estimated to be < 5% of dye concentration magnitude, thus demonstrating the viability of in situ surfzone fluorescent dye measurements. The surfzone techniques developed here may be applicable to other environments with high bubble and sand concentrations (e.g., cascading rivers and streams). Springer Netherlands 2009-04-16 2009 /pmc/articles/PMC2773363/ /pubmed/19898671 http://dx.doi.org/10.1007/s11270-009-0030-z Text en © The Author(s) 2009 https://creativecommons.org/licenses/by-nc/4.0/This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. |
spellingShingle | Article Clark, David B. Feddersen, Falk Omand, Melissa M. Guza, R. T. Measuring Fluorescent Dye in the Bubbly and Sediment-Laden Surfzone |
title | Measuring Fluorescent Dye in the Bubbly and Sediment-Laden Surfzone |
title_full | Measuring Fluorescent Dye in the Bubbly and Sediment-Laden Surfzone |
title_fullStr | Measuring Fluorescent Dye in the Bubbly and Sediment-Laden Surfzone |
title_full_unstemmed | Measuring Fluorescent Dye in the Bubbly and Sediment-Laden Surfzone |
title_short | Measuring Fluorescent Dye in the Bubbly and Sediment-Laden Surfzone |
title_sort | measuring fluorescent dye in the bubbly and sediment-laden surfzone |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2773363/ https://www.ncbi.nlm.nih.gov/pubmed/19898671 http://dx.doi.org/10.1007/s11270-009-0030-z |
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