0000000000037950

AUTHOR

S. I. Di Geronimo

showing 3 related works from this author

The behaviour of REEs in Thailand's Mae Klong estuary: Suggestions from the Y/Ho ratios and lanthanide tetrad effects

2007

Abstract The concentrations of Rare Earth Elements and yttrium (REY) were measured in dissolved phase, in suspended particulate matter (SPM) and in sediments in seven sampling stations in the Mae Klong estuarine system (Inner Thailand Gulf) in order to study their behaviour and distribution pattern. The analysed samples generally show high Rare Earth Element (REE) content in the dissolved phase, with high Medium Rare Earth Elements (MREEs) and Y enrichments in the shale-normalized pattern (versus PAAS). These chemical features are interpreted in terms of direct influences of weathering processes of REE-rich minerals (e.g., phosphates), which abundantly out-crop in the Mae Klong watershed. T…

Rare-earth elementSettore AGR/13 - Chimica Agrariachemistry.chemical_elementMineralogyWeatheringFractionationYttriumAuthigenicAquatic ScienceParticulatesOceanographyAdsorptionchemistryAluminosilicateEnvironmental chemistryGeologyrare earth elementstetrad effectY/Ho ratioMae Klong RiverGulf of ThailandEstuarine, Coastal and Shelf Science
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Rare-earth elements and yttrium distributions in mangrove coastal water systems: The western Gulf of Thailand

2005

The concentration of rare-earth elements and yttrium (REY) was investigated in dissolved phase, suspended particulate matter, and seafloor sediments of the western coastal area of the Gulf of Thailand. The samples show Eu and Gd positive anomalies in the shale-normalized REY patterns, especially in the suspended particulate matter. On the other hand, a very high REE content was detected in the coastal waters, probably due to the weathering produced by the Mae Klong river waters on rare-earth element (REE)-rich accessory minerals coming from terrains and mineral deposits cropping out in the studied area. The shale-normalized patterns of yttrium and REE estimated for the dissolved phase show …

MineralEcologySettore BIO/02 - Botanica SistematicaRare earthGeochemistrychemistry.chemical_elementSedimentWeatheringYttriumParticulatesRare-earth elements Gulf of Thailand Eu and Gd anomaliesSeafloor spreadingOceanographychemistryGeneral Earth and Planetary SciencesMangroveEcology Evolution Behavior and SystematicsGeologyGeneral Environmental ScienceChemistry and Ecology
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Heavy metals in coastal water systems. A case study from the northwestern Gulf of Thailand.

2005

A geochemical survey of the northwestern part of the Thailand Gulf (Inner Gulf) was carried out in order to define concentrations and distribution patterns of selected heavy metals (V, Cr, Co, Ni, Cu, Zn, and U) in the coastal system and estuarine area of the Mae Klong river. The results indicate the presence of two different sources of heavy metals in the studied environment and allowed us to identify a lithogenic component that significantly influences the composition of coastal waters and suspended particulate matter (SPM). Comparison of the normalized heavy metals concentrations both in the studied samples and in those reported for the Sn–W ores present in the surrounding areas suggests…

Geologic SedimentsEnvironmental EngineeringHealth Toxicology and MutagenesisMineralogyMetals HeavyEnvironmental monitoringWater Pollution ChemicalEnvironmental ChemistrySeawaterWater pollutiongeographygeography.geographical_feature_categoryPublic Health Environmental and Occupational HealthFlocculationEstuaryGeneral MedicineGeneral ChemistryParticulatesContaminationThailandTrace elements riverPollutionSeafloor spreadingEnvironmental chemistrySeawaterAdsorptionEnrichment factorEnvironmental MonitoringChemosphere
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