Sources and characteristics of organic matter in the Clackamas River, Oregon, related to the formation of disinfection by-products in treated drinking water

Carpenter, Kurt D.; Kraus, Tamara E.C.; Goldman, Jami H.; Saraceno, J.; Downing, Bryan D.; Bergamaschi, Brian A.; McGhee, Gordon; Triplett, T.

doi:10.3133/sir20135001

Cited by 15 publications

(22 citation statements)

References 54 publications

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“…Advances in field-deployable optical sensor technology over the past 20 years have led to the routine use of compact and relatively inexpensive fluorometers in situ in coastal environments (Chen, 1999;Coble et al, 1998;Vodacek et al, 1995) and more recently in freshwaters. For example, fluorescence sensors have been used as high resolution proxies to better understanding the transport of dissolved organic carbon (DOC) from watersheds Saraceno et al, 2009;Spencer et al, 2007), internal sources of DOC to drinking water reservoirs (Downing et al, 2008), the formation of disinfection by-products following drinking water treatment (Carpenter et al, 2013), and the transport and cycling of other constituents including methylmercury (Bergamaschi et al, 2011;Bergamaschi et al, 2012). Traditionally, DOM fluorescence (e.g.…”

Section: Fluorescence Measurements Of Water Qualitymentioning

confidence: 99%

The new Landsat 8 potential for remote sensing of colored dissolved organic matter (CDOM)

Slonecker

Jones

Pellerin

2016

Marine Pollution Bulletin

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Due to a combination of factors, such as a new coastal/aerosol band and improved radiometric sensitivity of the Operational Land Imager aboard Landsat 8, the atmospherically-corrected Surface Reflectance product for Landsat data, and the growing availability of corrected fDOM data from U.S. Geological Survey gaging stations, moderate-resolution remote sensing of fDOM may now be achievable. This paper explores the background of previous efforts and shows preliminary examples of the remote sensing and data relationships between corrected fDOM and Landsat 8 reflectance values. Although preliminary results before and after Hurricane Sandy are encouraging, more research is needed to explore the full potential of Landsat 8 to continuously map fDOM in a number of water profiles.

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Section: Fluorescence Measurements Of Water Qualitymentioning

confidence: 99%

The new Landsat 8 potential for remote sensing of colored dissolved organic matter (CDOM)

Slonecker

Jones

Pellerin

2016

Marine Pollution Bulletin

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“…In‐situ UV fluorescence sensors measuring humic‐like fluorescence (Peak C; λ excitation. = 365 nm λ emission = 470 nm), also referred to as fluorescent organic matter (FDOM), generally have a lower unit cost than UV absorbance sensors and their signal output appears to correlate strongly with DOC concentration once turbidity and temperature interference are corrected (Saraceno et al, ; Downing, Pellerin, Bergamaschi, Saraceno, & Kraus, ).Yet to‐date, application of this technology has been limited to rural catchments and urban river systems appear to have been largely neglected with a distinct bias towards North American systems (Pellerin, Saraceno, Shanley, et al, ; Downing et al, ; Carpenter, Kraus, Goldman, et al, ; Etheridge et al, ).…”

Section: Introductionmentioning

confidence: 99%

Continuous field estimation of dissolved organic carbon concentration and biochemical oxygen demand using dual‐wavelength fluorescence, turbidity and temperature

Khamis

Bradley

Stevens³

et al. 2016

Hydrological Processes

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Dissolved organic matter (DOM) quality and quantity is not measured routinely in‐situ limiting our ability to quantify DOM process dynamics. This is problematic given legislative obligations to determine event based variability; however, recent advances in field deployable optical sensing technology provide the opportunity to address this problem. In this paper, we outline a new approach for in‐situ quantification of DOM quantity (Dissolved Organic Carbon: DOC) and a component of quality (Biochemical Oxygen Demand: BOD) using a multi‐wavelength, through‐flow fluorescence sensor. The sensor measured tryptophan‐like (Peak T) and humic‐like (Peak C) fluorescence, alongside water temperature and turbidity. Laboratory derived coefficients were developed to compensate for thermal quenching and turbidity interference (i.e., light attenuation and scattering). Field tests were undertaken on an urban river with ageing wastewater and stormwater infrastructure (Bourn Brook; Birmingham, UK). Sensor output was validated against laboratory determinations of DOC and BOD collected by discrete grab sampling during baseflow and stormflow conditions. Data driven regression models were then compared to laboratory correction methods. A combination of temperature and turbidity compensated Peak T and Peak C was found to be a good predictor of DOC concentration (R2 = 0.92). Conversely, using temperature and turbidity correction coefficients provided low predictive power for BOD (R2 = 0.46 and R2 = 0.51, for Peak C and T, respectively). For this study system, turbidity appeared to be a reasonable proxy for BOD, R2 = 0.86. However, a linear mixed effect model with temperature compensated Peak T and turbidity provided a robust BOD prediction (R2 = 0.95). These findings indicate that with careful initial calibration, multi‐wavelength fluorescence, coupled with turbidity, and temperature provides a feasible proxy for continuous, in‐situ measurement of DOC concentration and BOD. This approach represents a cost effective monitoring solution, particularly when compared to UV – absorbance sensors and DOC analysers, and could be readily adopted for research and industrial applications.

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“…Currently, some of these optical techniques are being transferred to the field, with the continued development of field-deployable fluorometers, including multiwavelength sensors now in development, that provide the ability to link concentration-and composition-related dynamics through high-resolution DOM compositional indices (Carpenter et al 2013). Deployment of an ensemble of these next generation optical sensors may lead to a more comprehensive understanding of the processes controlling the fate and role of DOM in ecosystem energetics.…”

Section: Forging a New Course For River Dom Researchmentioning

confidence: 99%

The river as a chemostat: fresh perspectives on dissolved organic matter flowing down the river continuum

Creed

McKnight

Pellerin

et al. 2015

Can. J. Fish. Aquat. Sci.

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270

285

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Abstract:A better understanding is needed of how hydrological and biogeochemical processes control dissolved organic carbon (DOC) concentrations and dissolved organic matter (DOM) composition from headwaters downstream to large rivers. We examined a large DOM dataset from the National Water Information System of the US Geological Survey, which represents approximately 100 000 measurements of DOC concentration and DOM composition at many sites along rivers across the United States. Application of quantile regression revealed a tendency towards downstream spatial and temporal homogenization of DOC concentrations and a shift from dominance of aromatic DOM in headwaters to more aliphatic DOM downstream. The DOC concentration-discharge (C-Q) relationships at each site revealed a downstream tendency towards a slope of zero. We propose that despite complexities in river networks that have driven many revisions to the River Continuum Concept, rivers show a tendency towards chemostasis (C-Q slope of zero) because of a downstream shift from a dominance of hydrologic drivers that connect terrestrial DOM sources to streams in the headwaters towards a dominance of instream and near-stream biogeochemical processes that result in preferential losses of aromatic DOM and preferential gains of aliphatic DOM.

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Sources and characteristics of organic matter in the Clackamas River, Oregon, related to the formation of disinfection by-products in treated drinking water

Cited by 15 publications

References 54 publications

The new Landsat 8 potential for remote sensing of colored dissolved organic matter (CDOM)

The new Landsat 8 potential for remote sensing of colored dissolved organic matter (CDOM)

Continuous field estimation of dissolved organic carbon concentration and biochemical oxygen demand using dual‐wavelength fluorescence, turbidity and temperature

The river as a chemostat: fresh perspectives on dissolved organic matter flowing down the river continuum

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