The use of fluorescent dyes as tracers in highly saline groundwater

Magal, Einat; Weisbrod, Noam; Yakirevich, A.; Yechieli, Yoseph

doi:10.1016/j.jhydrol.2008.05.035

Cited by 57 publications

(41 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1), especially considering the geological-hydrological context where this tracer was used: a karst system developed within predominantly clayey-evaporitic lithologies. Smart & Laidlaw (1977) reported up to 49% of SRB retention on suspended minerals, Magal et al (2008) proved 100% sorption of this dye on clays and other minerals (quartz and calcite) when Cl -exceeds 100 g/l, and several authors documented the decreasing tracer fluorescence intensity when salinity increases (Feuerstein & Selleck, 1963;Smart & Laidlaw, 1977;Magal et al, 2008). The latter statement is furthermore confirmed in the present study (Fig.…”

Section: Discussionsupporting

confidence: 86%

“…Due to the effect of salinity on the tracer concentration (Käss, 1998;Magal et al, 2008), each solution was prepared using salt water with a NaCl concentration of 150 g/l. This value is close to the mean NaCl content of Lower Anzur spring waters (Gil-Márquez et al, 2017b).…”

Section: Analytical Determination Of Tracer Concentration and Conduitmentioning

confidence: 99%

“…The latter issue is particularly relevant if halite is present in the bedrock, given the potential effect (positive or negative) of NaCl on dye tracer detection (Käss, 1998). Moreover, salinity can also contribute to sorption-desorption processes of organic fluorescent tracers on clays (Magal et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Karst development of an evaporitic system and its hydrogeological implications inferred from GIS-based analysis and tracing techniques

Gil‐Márquez¹,

Barberá²,

Mudarra³

et al. 2017

IJS

View full text Add to dashboard Cite

Abstract:The geomorphological characteristics and hydrogeological functioning of a geologically heterogeneous evaporitic karst plateau in Southern Spain were studied. Land surface information (LiDAR data) was used to analyze the shape and distribution of closed depressions. An artificial tracer test and monitoring of the natural responses of the main spring have allowed to infer the karstic development of the studied system. Three dyes were injected in selected swallow holes to trace the main groundwater flowpaths and to estimate the dimension of the conduit network. Discharge, electrical conductivity and temperature were monitored in the groundwater that drains the evaporitic plateau during an individual and intense recharge pulse. Tracing techniques were adapted to high salinity environments by using specific calibration standards (NaCl + dye). The hydrological connection detected between two of the swallow holes and the outlet, and the deduced orientation pattern for closed areas, would suggest that the karst evolution (internal and external) is related to fault orientation. The rapid tracer detection (16-20 h) and high estimated maximum flow velocities (125-192 m/h), together with the fast impulsional response of the controlled physicalchemical parameters in spring waters (~15-16 h) demonstrate the existence of quick flows under recharge conditions with well-defined system drainage, indicating a high degree of internal karstification (estimated master conduit diameter ~1.5 m). However, flooding of the depressions feeding swallow holes and analysis of the spring response times from natural and artificial tracers point to a restriction of the system´s drainage, most likely due to the constrained morphology of the karst conduits. This results in sustained recharge periods and delayed spring responses of some parameters, highlighting the relevant role of concentrated recharge in the hydrogeological behavior of the studied evaporitic karst. Gil-Márquez J.M., Barberá J.A., Mudarra M., Andreo B., Prieto-Mera J., Sánchez D., RizoDecelis L.D., Argamasilla M., Nieto J.M. and de la Torre B., 2017. Karst development of an evaporitic system and its hydrogeological implications inferred from GIS-based analysis and tracing techniques.

show abstract

Section: Discussionsupporting

confidence: 86%

Section: Analytical Determination Of Tracer Concentration and Conduitmentioning

confidence: 99%

See 1 more Smart Citation

Karst development of an evaporitic system and its hydrogeological implications inferred from GIS-based analysis and tracing techniques

Gil‐Márquez¹,

Barberá²,

Mudarra³

et al. 2017

IJS

View full text Add to dashboard Cite

show abstract

“…The addition process also creates a potential for dosing problems at the water treatment plant. The effect of salinity, pH and chemical composition is known to hinder the fluorescence analysis of many fluorescent tracer compounds [79], and the susceptibility of chemicals to chlorine and chloramine disinfection processes would be likely significant. For example, sodium-fluorescein (or uranine) is readily broken down by strong oxidizing agents such as ozone, chlorine and chlorine dioxide -chemicals which are commonly used in water disinfection processes [80].…”

Section: Fluorescent Tracer Monitoringmentioning

confidence: 99%

Cross-connection detection in Australian dual reticulation systems by monitoring inherent fluorescent organic matter

Hambly

Henderson

Baker

et al. 2012

Environmental Technology Reviews

View full text Add to dashboard Cite

New housing developments are now commonly incorporating dual reticulation water systems for the redistribution of recycled water back to households for non-potable use. Within such distribution systems is the potential for cross-connections between recycled and drinking water pipelines, and a number of such events have been documented both in Australia and internationally. While many cross-connections are unlikely to present a source of health concern given the high level of recycled water treatment, they do have the potential to negatively impact public confidence in dual reticulation systems. A rapid and highly sensitive method of cross-connection detection is required to increase consumer confidence in the construction and maintenance of such recycled water distribution systems. This paper reviews a number of current and potential cross-connection detection methods, highlighting the use of fluorescence spectroscopy as a highly promising analytical tool for portable cross-connection detection.

show abstract

“…However, they are sensitive to light degradation (Diehl and Horchak-Morris 1987), pH and water chemistry (Smart and Laidlaw 1977;Krause et al 2005). Furthermore, significant sorption onto clays, which are a common component of drilling fluids, and the presence of humic substances, can decrease the fluorescence signal (Magal et al 2008;Hafuka et al 2015). These features limit the applicability of fluorescent dyes in deep drilling campaigns.…”

mentioning

confidence: 99%

A simple and inexpensive technique for assessing contamination during drilling operations

Friese

Kallmeyer

Kitte

et al. 2017

Limnology & Ocean Methods

View full text Add to dashboard Cite

Subsurface exploration relies on drilling. Normally drilling requires a drilling fluid that will infiltrate into the drill core. Drilling fluid contains non-indigenous materials and microbes from the surface, so its presence renders a sample unsuitable for microbiological and many other analyses. Because infiltration cannot be avoided, it is of paramount importance to assess the degree of contamination to identify uncontaminated samples for geomicrobiological investigations. To do this, usually a tracer is mixed into the drilling fluid. In past drilling operations a variety of tracers have been used, each has specific strengths and weaknesses. For microspheres the main problem was the high price, which limited their use to spot checks or drilling operations that require only small amounts of drilling fluid. Here, we present a modified microsphere tracer approach that uses an aqueous fluorescent pigment dispersion with a similar concentration of fluorescent particles as previously used microsphere tracers. However, it costs four orders of magnitude less, allowing for a more liberal use even in large operations.

show abstract

The use of fluorescent dyes as tracers in highly saline groundwater

Cited by 57 publications

References 22 publications

Karst development of an evaporitic system and its hydrogeological implications inferred from GIS-based analysis and tracing techniques

Karst development of an evaporitic system and its hydrogeological implications inferred from GIS-based analysis and tracing techniques

Cross-connection detection in Australian dual reticulation systems by monitoring inherent fluorescent organic matter

A simple and inexpensive technique for assessing contamination during drilling operations

Contact Info

Product

Resources

About