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Froidevaux, Pascal; Geering, J.-J.; Valley, J.-F.

doi:10.1023/a:1020872910506

Cited by 14 publications

(5 citation statements)

References 9 publications

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“…The method involves complexation of trivalent yttrium by three dipicolinate ligands to give an anionic species that is subsequently extracted on a polystyrene-based anion exchanger. [29,30] Thus, we speculated that anchoring dipicolinate ligands on a styrene matrix in an appropriate geometry would produce a polymer suitable for the specific recognition and extraction of yttrium. Consequently, the ion-imprinting technique was used to impress trivalent yttrium cations in a cavity formed by three dipicolinate entities bearing a vinyl function ( Figure 1).…”

Section: Introductionmentioning

confidence: 99%

“…The possibility of analyzing 90 Sr in numerous environmental and biological samples by determining its daughter product 90 Y was recently demonstrated. The method involves complexation of trivalent yttrium by three dipicolinate ligands to give an anionic species that is subsequently extracted on a polystyrene‐based anion exchanger 29. 30 Thus, we speculated that anchoring dipicolinate ligands on a styrene matrix in an appropriate geometry would produce a polymer suitable for the specific recognition and extraction of yttrium.…”

Section: Introductionmentioning

confidence: 99%

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Use of Dipicolinate‐Based Complexes for Producing Ion‐Imprinted Polystyrene Resins for the Extraction of Yttrium‐90 and Heavy Lanthanide Cations

Chauvin

Bünzli

Bochud

et al. 2006

Chemistry A European J

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Highly selective separation of yttrium (and lanthanides) is of interest for the design of radiopharmaceuticals, and an efficient method based on the ion‐imprinting concept is proposed here. The synthesis and structural, thermodynamic and photophysical characterization of complexes of trivalent yttrium and lanthanides with two new vinyl derivatives of dipicolinic acid, HL1 and L2, are described. The feasibility of using ion‐imprinted resins for yttrium and lanthanide separation is demonstrated. The resins were obtained by copolymerization with styrene and divinylbenzene and subsequent acid treatment to remove the metal ion. High‐resolution Eu luminescence experiments revealed that the geometry of the complexation sites is well preserved in the imprinted polymers. The ion‐imprinted polymer based on HL1 proved to be particularly well adapted for yttrium extraction, having a sizeable capacity (8.9±0.2 mg g−1 resin) and a fast rate of extraction (t1/2=1.7 min). In addition, lighter and heavier lanthanide ions are separated. Finally, the resin displays high selectivity for yttrium and lanthanide cations against alkali and alkaline earth metals. For instance, in a typical experiment, 10 mg of yttrium was extracted from 5 g of milk ash sample by 2 g of the resin. The good separation properties displayed by the resin based on HL1 open interesting perspectives for the production of highly pure 90Y and radiolanthanides for medical applications, and for trace analysis of these radiochemicals in food and in the environment.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Use of Dipicolinate‐Based Complexes for Producing Ion‐Imprinted Polystyrene Resins for the Extraction of Yttrium‐90 and Heavy Lanthanide Cations

Chauvin

Bünzli

Bochud

et al. 2006

Chemistry A European J

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“…Taking into account the fact that stable strontium was found in each sample, it can be assumed the isotope exchange between Sr and 90 Sr is more reliable than elemental exchange between 90 Sr and Ca as often suggested (Lieser, 2008). In the literature (Froidevaux et al, 2006(Froidevaux et al, , 2002Landstetter and Wallner, 2006;Mietelski et al, 2011Mietelski et al, , 2001Stamoulis et al, 1999;Tandon et al, 1998) radioactive concentration of 90 Sr is given counted over for Ca mass which indicates connection between both cations. Fig.…”

Section: Resultsmentioning

confidence: 99%

“…There are a few reports about the presence of radionuclides in bones of animals, birds and people (Froidevaux et al, 2006(Froidevaux et al, , 2002Komosa et al, 2009;Landstetter and Wallner, 2006;Mietelski et al, 2011Mietelski et al, , 2001Stamoulis et al, 1999;Tandon et al, 1998;Wallova et al, 2012). Such research is particularly difficult because of necessity of obtaining samples, especially difficult for human bones, and the structure and composition of bone itself.…”

Section: Introductionmentioning

confidence: 99%

Determination of radionuclides in samples of middle-aged and older human femurs

Solecki

Misztal

Skupiński

et al. 2015

Journal of Environmental Radioactivity

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“…I England ble det funnet høyere konsentrasjoner av plutonium i melketenner fra barn bosatt naer Sellafield i forhold til barn bosatt i lenger avstand fra dette gjenvinningsanlegget for radioaktive materialer [45]. I en studie fra Sveits publisert i 2006 fant man derimot ingen økning i Sr-90 i melketenner fra barn bosatt naer kjernekraftverk på 1990-tallet [49]. Slik kan melketenner brukes til å overvåke miljøet for skadelige stoffer.…”

Section: Radioaktive Isotoperunclassified

Melketenner som biomarkører i epidemiologisk forskning

Tvinnereim¹,

Langseth²,

Klock³

2012

Nor J Epidemiol

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ENGLISH SUMMARYHuman primary teeth can give important information about trace element exposure prenatally and in early childhood -the period of tooth formation and the most vulnerable period in life. Trace elements from the environment and from nutrition are built into the tooth tissues during the period of tooth formation. As tooth tissues develop incrementally, according to a known pattern, and are very stable, teeth may function as recorders or biomarkers of different exposures during the period of tooth formation. In this paper the use of primary teeth as biomarkers of exposure is presented with a special focus on the use within epidemiology. INNLEDNINGMelketenner kan gi viktig informasjon om eksponering overfor sporelementer på fosterstadiet og i tidlig barndom. Denne perioden av livet regnes for å vaere spesielt sensitiv med hensyn til eksponering for miljøgifter, fordi organene er umodne, og barrierene mot miljøet ikke er ferdigutviklet [1]. Fordi kroppen er i rask vekst, har barn generelt høyere metabolisme enn voksne og utsettes potensielt for større mengder forurensning per kilo kroppsvekt som en følge av høyere oksygenforbruk og større inntak av mat og drikke per kilo kroppsvekt [2]. Småbarn putter også gjerne ting i munnen som inneholder helsefarlige stoffer. En spesiell oppmerksomhet må derfor rettes mot barns miljøforhold.Nye levesett og kostholdsvaner kan også virke inn på helsen. For lavt inntak av essensielle elementer fra ernaeringen vil kunne gi helseutfall på kortere eller lengre sikt [3]. For å overvåke endringer i miljøet og befolkningens helsetilstand, kreves ulike kontrollrutiner. Enkelte vev og vaesker i kroppen kan brukes til å måle kroppens opptak av elementer og forbindelser fra miljøet, såkalte biomarkører for eksponering [4]. Melketenner har vaert brukt som biomarkører i en rekke studier og kan gi viktig informasjon om barnets miljø på fosterstadiet og i tidlig barndom [5][6][7]. Sporstoffer fra miljø og ernaering bygges inn i tannvevet etter hvert som tennene dannes. Fordi tannvevet dannes lagvis etter et kjent mønster og dessuten er svaert stabilt, kan tenner fungere som en slags ferdsskriver for ulike eksponeringer i tanndanningsperioden [8,9]. Tannvev kan også vise morfologiske forandringer og mineraliseringsdefekter som resultat av eksponering overfor miljøgifter, sykdom eller ernaeringssvikt i løpet av tanndannelsen [10,11]. Melketenner har vaert brukt i en rekke epidemiologiske undersøkelser rundt om i verden for å avdekke områder med miljøforurensning [12][13][14][15], undersøke hviken påvirkning eksponeringer for toksiske sporelementer har på barns utvikling og helse [16][17][18] og for å kartlegge ernaeringstilstanden hos grupper av barn [7,19]. I denne artikkelen presenteres hvordan melketenner har vaert brukt og brukes i forskningssammenheng for å øke kunnskapen om barns opptak av toksiske og essensielle elementer fra miljø og ernaering, samt hvordan denne kunnskapen kan brukes til å forebygge helseskader. MELKETENNENES UTVIKLINGMelketannsettet starter sin utvikling alle...

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Cited by 14 publications

References 9 publications

Use of Dipicolinate‐Based Complexes for Producing Ion‐Imprinted Polystyrene Resins for the Extraction of Yttrium‐90 and Heavy Lanthanide Cations

Use of Dipicolinate‐Based Complexes for Producing Ion‐Imprinted Polystyrene Resins for the Extraction of Yttrium‐90 and Heavy Lanthanide Cations

Determination of radionuclides in samples of middle-aged and older human femurs

Melketenner som biomarkører i epidemiologisk forskning

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