Uranium

Goulet, Richard R.; Fortin, Claude; Spry, Douglas J.

doi:10.1016/s1546-5098(11)31030-8

Cited by 32 publications

(24 citation statements)

References 83 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The prevailing pH level, as well as the absence of added phosphate in the artificial medium, resulted in the maintenance of high levels of uranium bioavailability [23,[35][36][37]. Crayfish received two uncontaminated bivalves as a meal, at 4 d and 8 d, over the 10-d exposure period.…”

Section: Direct Exposure Treatmentmentioning

confidence: 99%

Relative importance of direct and trophic uranium exposures in the crayfish Orconectes limosus: Implication for predicting uranium bioaccumulation and its associated toxicity

Simon

Floriani

Camilleri

et al. 2012

Enviro Toxic and Chemistry

View full text Add to dashboard Cite

Abstract-Pollutants that occur at sublethal concentrations in the environment may lead to chronic exposure in aquatic organisms. If these pollutants bioaccumulate, then organisms higher in the food chain may also be at risk. Increased attention has thus been focused on the relative importance of dietary uptake, but additional knowledge of the cellular distribution of metals after dietary exposure is required to assess the potential toxicity. The authors address concerns relating to increasing uranium (U) concentrations (from 12 mg/L to 2 mg/L) in the freshwater ecosystem caused by anthropogenic activities. The objective of the present study is to compare uranium bioaccumulation levels in tissues and in the subcellular environment. The authors focused on the cytosol fraction and its microlocalization (TEM-EDX) in the gills and the hepatopancreas (HP) of the crayfish Orconectes limosus after 10 d of direct exposure (at concentrations of 20, 100, and 500 mg/L) and five trophic exposure treatments (at concentrations from 1 to 20 mg/g). Results indicated that adsorption of uranium on the cuticle represents the main contribution of total uranium accumulation to the animal. Accumulation in the gills should be considered only as a marker of waterborne uranium exposure. Accumulation in the HP after trophic environmental exposure conditions was higher (18.9 AE 3.8 mg/g) than after direct exposure. Moreover, no significant difference in the subcellular distribution of uranium (50%) in HP was observed between animals that had been exposed to both types of treatment. A potential toxic effect after uranium accumulation could therefore exist after trophic exposure. This confirms the need to focus further studies on the metal (uranium) risk assessment. Environ. Toxicol. Chem. 2013;32:410-416. # 2012 SETAC

show abstract

Section: Direct Exposure Treatmentmentioning

confidence: 99%

Relative importance of direct and trophic uranium exposures in the crayfish Orconectes limosus: Implication for predicting uranium bioaccumulation and its associated toxicity

Simon

Floriani

Camilleri

et al. 2012

Enviro Toxic and Chemistry

View full text Add to dashboard Cite

show abstract

“…The MRG fraction presented a high U accumulation rate; their formation and U co-precipitation was rapidly induced by the presence of the U. The presence of intracellular phosphate, a strong U ligand (Goulet et al, 2011) could contribute to the formation of U-P complex leading to the formation of the URG as proposed by Milgram et al(Milgram et al, 2008) and Chassard Bouchaud (1983) in gill cuticle of crabs. High quantity of such small U complex could be contained in the MRG fraction.…”

Section: Subcellular Levelmentioning

confidence: 71%

Subcellular fractionation and chemical speciation of uranium to elucidate its fate in gills and hepatopancreas of crayfish Procambarus clarkii

Frelon¹,

Mounicou²,

Łobiński³

et al. 2013

Chemosphere

View full text Add to dashboard Cite

“…With the gradual depletion of fossil energy, nuclear energy has become one effective way to solve the energy crisis and received attention all over the world (Li and Zhang 2012;Carvalho et al 2011;Goulet et al 2011). This has resulted in the increase in the demand for uranium and the scale of uranium mining and processing, which has in turn increased the production of the uranium wastewater.…”

Section: Introductionmentioning

confidence: 99%

An artificially constructed Syngonium podophyllum-Aspergillus niger combinate system for removal of uranium from wastewater

Wang

et al. 2015

Environ Sci Pollut Res

View full text Add to dashboard Cite

Aspergillus niger was inoculated to the roots of five plants, and the Syngonium podophyllum-A. niger combinate system (SPANCS) was found to be the most effective in removing uranium from hydroponic liquid with initial uranium concentration of 5 mg L(-1). Furthermore, the hydroponic experiments on the removal of uranium from the hydroponic liquids with initial uranium concentrations of 0.5, 1.0, and 3.0 mg L(-1) by the SPANCS were conducted, the inhibitory effect of A. niger on the growth of S. podophyllum in the SPANCS was studied, the accumulation characteristics of uranium by S. podophyllum in the SPANCS were analyzed, and the Fourier transform infrared (FT-IR) and extended X-ray absorption fine structure (EXAFS) spectra were measured. The results show that the removal of uranium by the SPANCS from the hydroponic liquids with initial uranium concentrations of 0.5, 1.0, and 3.0 mg L(-1) reached 98.20, 97.90, and 98.50%, respectively, after 37 days of accumulation of uranium; that the uranium concentrations in the hydroponic liquids decreased to 0.009, 0.021, and 0.045 mg L(-1), respectively, which are lower than the stipulated concentration for discharge of 0.050 mg L(-1) by the People's Republic of China; that A. niger helped to generate more groups in the root of S. podophyllum which can improve the complexing capability of S. podophyllum for uranium; and that the uranium accumulated in the root of S. podophyllum was in the form of phosphate uranyl and carboxylic uranyl.

show abstract

Uranium

Cited by 32 publications

References 83 publications

Relative importance of direct and trophic uranium exposures in the crayfish Orconectes limosus: Implication for predicting uranium bioaccumulation and its associated toxicity

Relative importance of direct and trophic uranium exposures in the crayfish Orconectes limosus: Implication for predicting uranium bioaccumulation and its associated toxicity

Subcellular fractionation and chemical speciation of uranium to elucidate its fate in gills and hepatopancreas of crayfish Procambarus clarkii

An artificially constructed Syngonium podophyllum-Aspergillus niger combinate system for removal of uranium from wastewater

Contact Info

Product

Resources

About