Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017WR020815 |
Multitracer Field Fluorometry: Accounting for Temperature and Turbidity Variability During Stream Tracer Tests | |
Blaen, Phillip J.1,2; Brekenfeld, Nicolai1; Comer-Warner, Sophie1; Krause, Stefan1,2 | |
2017-11-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2017 |
卷号 | 53期号:11 |
文章类型 | Article |
语种 | 英语 |
国家 | England |
英文摘要 | The use of multitracer field fluorometry is increasing in the hydrological sciences. However, obtaining high-quality fluorescence measurements is challenging given the variability in environmental conditions within stream ecosystems. Here, we conducted a series of stream tracer tests to examine the degree to which multitracer field fluorometry produces reliable estimates of tracer concentrations under realistic field conditions. Using frequently applied examples of conservative (Uranine) and reactive (Resazurin-Resorufin) fluorescent tracers, we show that in situ measurements of tracer breakthrough curves can deviate markedly from corresponding samples analyzed under laboratory conditions. To investigate the effects of key environmental variables on fluorescence measurements, we characterized the response of field fluorometer measurements to changes in temperature, turbidity, and tracer concentration. Results showed pronounced negative log-linear effects of temperature on fluorescence measurements for all tracers, with stronger effects observed typically at lower tracer concentrations. We also observed linear effects of turbidity on fluorescence measurements that varied predictably with tracer concentration. Based on our findings, we present methods to correct field fluorometer measurements for variation in these parameters. Our results show how changing environmental conditions can introduce substantial uncertainties in the analysis of fluorescent tracer breakthrough curves, and highlight the importance of accounting for these changes to prevent incorrect inferences being drawn regarding the physical and biogeochemical processes underpinning observed patterns. |
英文关键词 | fluorescence tracer field fluorometry in situ temperature turbidity |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000418736700026 |
WOS关键词 | DISSOLVED ORGANIC-MATTER ; IN-SITU MEASUREMENTS ; REACTIVE TRANSPORT ; RIVERS ; FLUORESCENCE ; ECOHYDROLOGY ; EXCHANGE ; AQUIFER ; MODEL ; DYES |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/21137 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Birmingham, Sch Geog Earth & Environm Sci, Birmingham, W Midlands, England; 2.Univ Birmingham, Birmingham Inst Forest Res, Birmingham, W Midlands, England |
推荐引用方式 GB/T 7714 | Blaen, Phillip J.,Brekenfeld, Nicolai,Comer-Warner, Sophie,et al. Multitracer Field Fluorometry: Accounting for Temperature and Turbidity Variability During Stream Tracer Tests[J]. WATER RESOURCES RESEARCH,2017,53(11). |
APA | Blaen, Phillip J.,Brekenfeld, Nicolai,Comer-Warner, Sophie,&Krause, Stefan.(2017).Multitracer Field Fluorometry: Accounting for Temperature and Turbidity Variability During Stream Tracer Tests.WATER RESOURCES RESEARCH,53(11). |
MLA | Blaen, Phillip J.,et al."Multitracer Field Fluorometry: Accounting for Temperature and Turbidity Variability During Stream Tracer Tests".WATER RESOURCES RESEARCH 53.11(2017). |
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