Uranium in groundwater

Hodge VF, Johaimesson KH, Stetzenbach KJ (1996) Rhenium, molybdenum, and uranium in groundwater from the southern Great Basin, USA evidence for conservative behavior. Geochim Cosmochim Acta 60 3197-3214... 

Longtin JP. 1988. Occurrence of radon, radium, and uranium in groundwater. J AWWA (July) 84-93. 

Kerr el. al. [307] employed high performance liquid chromatography for the determination of uranium in groundwaters. The sample was passed through a small reversed phase enrichment cartridge, to separate the uranium from the bulk of the dissolved constituents. The uranium was then back flushed from the cartridge onto a reversed phase analytical column. The separated species were monitored spectrophotometrically after reaction with arsenazo(III). The detection limit was in the 1-2gg L 1 range with a precision of approximately 4%. 

Wang J New Mexico State University, Dept of Chemistry and Biochemistry Las Cruces, NM Development of in situ microsensor for the measurement of chromium and uranium in groundwater at DOE sites. DOE... 

Michel J, Jordana MJ. 1987. Nationwide distribution of radium-228 radon- 222 and uranium in groundwater. In Graves B, ed. Radon in ground water, radon, radium and other radioactivity in ground water Hydrogeologic impact and application to indoor airborne contamination Proc National Water Well Association conference, Somerset, NJ, April 7-9,1987. Chelsea, MI Lewis Publishers, Inc., 227-240. 

The speciation of dissolved uranium in groundwater has been modeled in a study of uranium oxide fuel dissolution. The calculated ],-pH diagram for a typical groundwater composition is shown in Figure This again shows the importance of carbonate complexes but also... 

Abdelouas A, Lutze W, Gong W, Nuttall EH, Strietelmeier BA and Travis B (2000) Biological reduction of uranium in groundwater and subsurface soil. Sd Total Environ 250 21—35. 

Colorimetric Method (Photometry) A rapid, simple colorimetric method for the determination of uranium in groundwater and drinking water that can be nsed in the laboratory and in the field was described (Ratliff 2008). The first step is selectively trapping the uranium on a chromatographic resin (U/TEVA-2 in this example) followed by the formation of a colored complex with a pyridylazo indicator dye (Br-PADAP). At neutral pH, the complex absorbs light at 578 nm and is clearly visible. Qnantiflcation can be achieved with a spectrophotometer. The method can detect nraninm concentrations above the US-EPA guideline for drinking water of 30 pg L In Section 4.4.1, another colorimetric method that is snitable for the determination of nraninm in water and nrine based on the formation of a complex with Arsenazo-III is presented. 

Roberts, K.D. (2008). A survey of naturally occurring uranium in groundwater in southwestern North Dakota http //www.ndhealth.gov/wq/gw/pubs/uranium.htm (accessed August 3, 2014). 

---