Measuring and modelling temporal trends of 226Ra in waters of a Spanish estuary affected by the phosphate industry

Periáñez, R.

doi:10.1016/j.marenvres.2004.08.003

Cited by 5 publications

(4 citation statements)

References 20 publications

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“…In another estuary in Florida the activity of 226 Ra was comparable to what was observed in the present study . In a Spanish estuary affected by phosphate industry 226 Ra was about 10 times higher when direct discharge to the estuary took place but became comparable to our results after conservation measures minimized direct discharge (Perianez, 2005). In other estuaries radium activities about half of those encountered in the present study have been found (Hancock and Murray, 1996;Lee et al, 2005).…”

Section: Radium Activitiessupporting

confidence: 85%

“…Phosphate is known to have elevated levels of radium (Perianez, 2005), and radium is known to increase cancer risk (Mays et al, 1985). Monitoring wells in the plume were monitored between 1992 and 2002 although some wells were tested for radium for the first time in 1997in or 1999in (URS, 2003.…”

Section: Radiummentioning

confidence: 99%

“…Radium may occur naturally in an aquifer because of decay of uranium and/or thorium in the aquifer matrix. The two most stable isotopes , 1993;Perianez, 2005) and 228 Ra/ 226 Ra activity ratios in phosphate are often between 0.75 and 1.25 (Sidle et al, 2001). This means that low radium activity ratios in the Sand and Gravel aquifer would point to an ACC origin for the radium.…”

Section: Origin Of Radium In the Acc Aquifermentioning

confidence: 99%

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Pollution in an Urban Bayou: Magnitude, Spatial Distribution and Origin

Liebens

Mohrherr

Rao

et al. 2006

Water Air Soil Pollut

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Bayou Texar in Pensacola, FL, receives pollutants from a variety of sources, presumably including two USEPA's Priorities List sites. To evaluate the potential negative impacts of pollution in this type of setting, we determined the level and distribution of some of the pollutants in the bayou and identified the most likely sources for them. Results show that fluoride, a tracer for a contaminated groundwater plume from one of the Priorities List sites, enters sediments in the northern part of the bayou and migrates into the water. Radium in the bayou most likely also emanates from the contaminated groundwater plume. However, 228 Ra/ 226 Ra isotope ratios indicate that the radium enters the plume from the aquifer matrix, and thus does not originate directly at the Priorities List site. PAHs of creosote origin are known to have been released by the second Priorities List site but apparently they do not affect the sediments of the bayou because ratios of individual PAHs show that they are derived from combustion. The concentrations of the PAHs are slightly higher in the northern part of the bayou. Unlike other pollutants, most metals exceed their probable effects level (PEL) in many places in the bayou. The highest concentrations are observed in the northern part of the bayou. Low metal concentrations in monitoring wells and in deep sediments in the bayou suggest that the metals do not come from the groundwater plume. Sediment transport analysis shows that sediments are trapped in the northern part of the bayou. Consequently, long term accumulation explains the observed high concentrations of heavy metals, and other sediment bound pollutants, in the northern part of Bayou Texar. Pollutant concentrations vary greatly spatially, demonstrating the importance of geographical analysis for this type of environmental research.

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Section: Radium Activitiessupporting

confidence: 85%

Section: Radiummentioning

confidence: 99%

Section: Origin Of Radium In the Acc Aquifermentioning

confidence: 99%

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Pollution in an Urban Bayou: Magnitude, Spatial Distribution and Origin

Liebens

Mohrherr

Rao

et al. 2006

Water Air Soil Pollut

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“…The designed binders, unlike non-water-resistant gypsum binders, have universal properties, manifested in the ability to hydraulic hardening, less prone to creeping and sufficient durability (Burnett and Elzerman, 2001;Perianez, 2005;Pereira, 2003).…”

Section: Literature Reviewmentioning

confidence: 99%

Fine-Grainedcellular Concrete Creep Analysis Technique with Consideration Forcarbonation

Murtazaev¹,

Lesovik²,

Bataiev³

et al. 2015

MAS

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Levels of major and trace elements, including rare earth elements, and 238U in Croatian tap waters

Fiket

Rožmarić

Krmpotić

et al. 2014

Environ Sci Pollut Res

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Concentrations of 46 elements, including major, trace, and rare earth elements, and (238)U in Croatian tap waters were investigated. Selected sampling locations include tap waters from various hydrogeological regions, i.e., different types of aquifers, providing insight into the range of concentrations of studied elements and (238)U activity concentrations in Croatian tap waters. Obtained concentrations were compared with the Croatian maximum contaminant levels for trace elements in water intended for human consumption, as well as WHO and EPA drinking water standards. Concentrations in all analyzed tap waters were found in accordance with Croatian regulations, except tap water from Šibenik in which manganese in concentration above maximum permissible concentration (MPC) was measured. Furthermore, in tap water from Osijek, levels of arsenic exceeded the WHO guidelines and EPA regulations. In general, investigated tap waters were found to vary considerably in concentrations of studied elements, including (238)U activity concentrations. Causes of variability were further explored using statistical methods. Composition of studied tap waters was found to be predominately influenced by hydrogeological characteristics of the aquifer, at regional and local level, the existing redox conditions, and the household plumbing system. Rare earth element data, including abundances and fractionation patterns, complemented the characterization and facilitated the interpretation of factors affecting the composition of the analyzed tap waters.

show abstract

Measuring and modelling temporal trends of 226Ra in waters of a Spanish estuary affected by the phosphate industry

Cited by 5 publications

References 20 publications

Pollution in an Urban Bayou: Magnitude, Spatial Distribution and Origin

Pollution in an Urban Bayou: Magnitude, Spatial Distribution and Origin

Fine-Grainedcellular Concrete Creep Analysis Technique with Consideration Forcarbonation

Levels of major and trace elements, including rare earth elements, and 238U in Croatian tap waters

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