Rapid and efficient separation of strontium from liquid milk with a cation exchange resin Dowex 50WX8 treated with cryptand 222

Tait, D.; Haase, G.; Wiechen, A.

doi:10.1007/bf02063652

Cited by 17 publications

(9 citation statements)

References 10 publications

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“…For general background to the macrocyclic polyether 4,7,13,16,21,24-hexaoxa-1,10-diaza-bicyclo[8.8.8]hexacosane, see: Izatt et al (1985); Tait et al (1997); Varga et al (1994); Trend et al (1993); Hamacher et al (1986); Su & Burnette (2008). For related structures, see: Belaj et al (1997); Tehan et al (1974).…”

Section: Related Literaturementioning

confidence: 99%

“…222 encapsulates 1:1 various alkali and alkaline earth metals, and features high selectivity for K + and Sr 2+ in solution (Izatt et al, 1985). Tait et al (1997) formulated a cation exchange resin treated with 222 that sorbed more than 95% of the fallout nuclide 90 Sr in liquid milk (295 K, pH 5.2, 4 h contact time, 1:50 resin to milk volume ratio). Varga et al (1994) synthesized functionalized 222 for 85 Sr 2+ decorporation in the rat and mouse.…”

Section: S1 Commentmentioning

confidence: 99%

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(4,7,13,16,21,24-Hexaoxa-1,10-diazabicyclo[8.8.8]hexacosane)sodium perchlorate

Guzei

Su²,

Spencer

et al. 2009

Acta Cryst E

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Key indicators: single-crystal X-ray study; T = 100 K; mean (Na-O) = 0.002 Å; disorder in main residue; R factor = 0.037; wR factor = 0.113; data-to-parameter ratio = 9.5.The title compound, [Na(C 18 H 36 N 2 O 6 )]ClO 4 , was isolated and crystallized to understand more fully the ligand's binding specificity to cations. The cation and anion reside at an intersection of crystallographic twofold and threefold axes. The carbon atoms in the cation are disordered over two positions in a 3:2 ratio, and the anion is equally disordered over two positions. The geometries of the cation and anion are typical. The compound packs in alternating sheets of discrete cations and anions stacked along the c axis, separated by a distance equal to one-sixth the length of the c axis.

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Section: Related Literaturementioning

confidence: 99%

Section: S1 Commentmentioning

confidence: 99%

(4,7,13,16,21,24-Hexaoxa-1,10-diazabicyclo[8.8.8]hexacosane)sodium perchlorate

Guzei

Su²,

Spencer

et al. 2009

Acta Cryst E

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“…The column is washed with 10 mg·mL -1 solution of stable cesium to remove milk traces and minimize contamination of radiostrontium sorbed with radiocesium. Two years later [44,45], the same authors extracted more than 95% of strontium with D/222 under the following conditions: the volume ratio of resin to milk is 1:50; the pH of the milk is adjusted to between 4.8-5.4; the contact time is about 4 h at 22°C.…”

Section: Sample Preparationmentioning

confidence: 99%

“…Furthermore, the resin inefficiently separates strontium from barium. However, Tait et al [44,45] proposed an elution procedure which enables us to separate both elements. The second limitation of such a material is a low regeneration power (³ 4 times) which incurs a substantial cost for routine analysis.…”

Section: Extraction Chromatographymentioning

confidence: 99%

“…Although the lower background obtained with ultra low level liquid scintillation (> 3 dpm) is greater than for the proportional counter, liquid scintillation is frequently used [2,5,18,19,23,28,36,[42][43][44][45] because it gives a b spectral distribution for the three radionuclides. Furthermore, liquid scintillation is characterized by a high counting efficiency (> 85% for 90 Sr and 90 Y) and avoids counting problems such as self absorption, poor geometry or nonuniformity of sample mounting.…”

Section: Liquid Scintillation Detectormentioning

confidence: 99%

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Methodology for determination of radiostrontium in milk: a review

Brun

Kergadallan

Boursier

et al. 2003

Lait

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-This paper presents a review on all available analytical methods for 90 Sr and 89 Sr determination in milk. Special attention was focused on the parameter of the performing time in order to assess the rapid measurement of milk contamination, especially in the case of emergency situations such as a nuclear plant accident. Preliminarily, a short description of the milk matrix and radiostrontium transfer from soil to milk and its derivatives is given. Then analytical procedures are examined step by step. 90 Sr and 89 Sr can be separately determined in less than 2 days by a rapid sample pretreatment and the use of a liquid scintillation detector.Strontium / radioactivity / analytical method / milk Résumé -Revue des méthodes de dosage du radiostrontium dans le lait. Cet article présente l'ensemble des méthodes analytiques disponibles pour le dosage du 90 Sr et du 89 Sr dans le lait. Cette étude attache une importance toute particulière à la durée d'analyse dans le but d'une estimation rapide de la contamination du lait telle qu'elle est rendue nécessaire dans le cas de situations d'urgences comme l'accident d'une centrale nucléaire. En préliminaires, une rapide description de la matrice lait et du transfert du radiostrontium du sol au lait et ses dérivés est donnée. Puis, les procédures analytiques sont examinées étape par étape. Les isotopes 90 et 89 du strontium peuvent être déterminés séparément en moins de 2 jours par un traitement rapide de l'échantillon et l'utilisation d'un détecteur à scintillation liquide. Strontium / radioactivité / méthode d'analyse / lait

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Strontium: Radionuclides

Guillén¹,

Baeza²,

Salas³

2005

Encyclopedia of Inorganic Chemistry

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Strontium has several radioactive isotopes, with 90 Sr being the most important in the environment. This radionuclide dispersed worldwide as a consequence of the atmospheric nuclear weapon tests in the 1960s, and is locally enhanced owing to the accidents involving radioactive material. 90 Sr is a pure β‐emitter and it may be detected by several detection techniques (gas‐flow proportional, liquid scintillation, Cerenkov counting, and ICP‐MS), after an appropriate radiochemical separation. The environmental behavior of radiostrontium is governed by its chemical similarities to calcium. It is usually associated with the mobile and bioavailable fractions in soils, and with the low MW fraction in aquatic ecosystems. The potential human exposure to radiostrontium is mainly due to the ingestion of food, milk and cereals being the two major sources. This exposure can be reduced to some extent by the addition of calcium fertilizers to minimize the soil‐to‐plant transfer of radiostrontium, and by increasing cattle calcium intake to decrease the 90 Sr content in milk.

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Rapid and efficient separation of strontium from liquid milk with a cation exchange resin Dowex 50WX8 treated with cryptand 222

Cited by 17 publications

References 10 publications

(4,7,13,16,21,24-Hexaoxa-1,10-diazabicyclo[8.8.8]hexacosane)sodium perchlorate

(4,7,13,16,21,24-Hexaoxa-1,10-diazabicyclo[8.8.8]hexacosane)sodium perchlorate

Methodology for determination of radiostrontium in milk: a review

Strontium: Radionuclides

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