Contribution to the simultaneous determination of228Ra and226Ra by using 3M's EMPORETM radium rad disks

Ďurecová, A.

doi:10.1007/bf02223390

“…1 litre of water sample was used for the determination of 226 Ra by emanometry. 133 Ba and lead-barium carrier were added to the acidified water sample and radium-lead-barium sulphate was precipitated by the standard method [1]. 226 Ra was counted by emanometry.…”

Section: Methodsmentioning

confidence: 99%

“…4 litres of water sample were used to analyse 228 Ra by gamma spectrometry. 133 Ba, lead-barium carrier were added to the acidified water sample and radium-lead-barium sulphate precipitated by the standard method [1]. The precipitate was centrifuged, dried and counted for 228 Ac, the decay product of 228 Ra, by gamma spectrometry.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Determination of 226Ra, 224Ra, 223Ra and 228Ra in mineral water samples of the Slovak Republic

Ďurecová

¹

,

Ďurec

²

,

Bursová

³

2006

Czech J Phys

3

0

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The Slovak Republic is very rich in mineral water sources. In recent years, it has been discovered that a number of mineral waters in the Slovak Republic contain high levels of 226 Ra and 228 Ra. Moreover, there is a lack of information on 224 Ra and 223 Ra concentrations in mineral waters as well. The currently approved techniques for alpha emitting radium isotopes are based on radon emanation methods. Due to the long ingrowth periods required by these techniques, any 224 Ra and 223 Ra in the sample decay away and go undetected. For this reason, we have used an alpha spectrometric method for the simultaneous determination of 226 Ra, 223 Ra and 224 Ra. Radium was concentrated by a lead sulphate co-precipitation. The precipitate was dissolved in EDTA and the radium isotopes were separated from possible interfering radionuclides using barium sulphate micro precipitation. The radium-barium precipitate was filtered and counted by alpha spectrometry. 133 Ba was used to quantify the yield by gamma spectrometry. In our laboratory, gamma spectrometry was also used for the determination of 228 Ra in mineral water samples. Radium was concentrated by a lead-barium sulphate co-precipitation. 133 Ba was used to quantify the yield, found to be 97 % on the average, by gamma spectrometry. Furthermore, the committed effective doses for 226 Ra, 224 Ra, 223 Ra, 228 Ra intake via ingestion of mineral waters for the members of public were calculated. 228 Ra [1,3,4,[6][7][8]. The currently approved methods for alpha emitting radium isotopes are based on radon emanation techniques. Due to the long ingrowth periods required by these methods, any 224 Ra and 223 Ra in the sample decay away and go undetected. For this reason, we used an alpha spectrometric method for the simultaneous determination of 226 Ra, 223 Ra and 224 Ra. In our laboratory, radium-lead-barium sulphate co-precipitation followed by gamma spectrometry was used for the determination of 228 Ra in mineral water samples.

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“…11 However, digestion of the disk was required to achieve a quantitative recovery, making this method costly and cumbersome. Elution from the disk was demonstrated with diammonium hydrogen citrate, 15 but the ammonium and citrate ions present at high concentrations in the plasma significantly suppressed the radium signal. The Ra-specific solid phase extraction disks were also specific to strontium, 15 limiting their usage for ICP-MS determination of radium when the samples contained high concentrations of strontium (e.g., vegetation and ores).…”

Section: Introductionmentioning

confidence: 99%

“…Elution from the disk was demonstrated with diammonium hydrogen citrate, 15 but the ammonium and citrate ions present at high concentrations in the plasma significantly suppressed the radium signal. The Ra-specific solid phase extraction disks were also specific to strontium, 15 limiting their usage for ICP-MS determination of radium when the samples contained high concentrations of strontium (e.g., vegetation and ores). Furthermore, the large area (69 cm 2 ) of the disks, which was efficient for pre-concentrating radium from large sample volumes (i.e.…”

Section: Introductionmentioning

confidence: 99%

Determination of radium-226 in environmental samples by inductively coupled plasma mass spectrometry after sequential selective extraction

Larivière

¹

,

Epov

²

,

Evans

³

et al. 2003

J. Anal. At. Spectrom.

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A sequential selective extraction procedure for the pre-concentration of radium-226 in complex environmental matrices (i.e. uranium ores and biological samples) was developed and used in conjunction with an inductively coupled plasma collision cell quadrupole mass spectrometer (ICP-CC-Q-MS). In order to measure Ra-226 adequately by mass spectrometry, potential polyatomic interferences created by Ba, Ce

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Determination of 226Ra, 224Ra, 223Ra and 228Ra in mineral water samples of the Slovak Republic

Ďurecová

¹

,

Ďurec

²

,

Bursová

³

2006

Czech J Phys

7

0

View full text Add to dashboard Cite

The Slovak Republic is very rich in mineral water sources. In recent years, it has been discovered that a number of mineral waters in the Slovak Republic contain high levels of 226 Ra and 228 Ra. Moreover, there is a lack of information on 224 Ra and 223 Ra concentrations in mineral waters as well. The currently approved techniques for alpha emitting radium isotopes are based on radon emanation methods. Due to the long ingrowth periods required by these techniques, any 224 Ra and 223 Ra in the sample decay away and go undetected. For this reason, we have used an alpha spectrometric method for the simultaneous determination of 226 Ra, 223 Ra and 224 Ra. Radium was concentrated by a lead sulphate co-precipitation. The precipitate was dissolved in EDTA and the radium isotopes were separated from possible interfering radionuclides using barium sulphate micro precipitation. The radium-barium precipitate was filtered and counted by alpha spectrometry. 133 Ba was used to quantify the yield by gamma spectrometry. In our laboratory, gamma spectrometry was also used for the determination of 228 Ra in mineral water samples. Radium was concentrated by a lead-barium sulphate co-precipitation. 133 Ba was used to quantify the yield, found to be 97 % on the average, by gamma spectrometry. Furthermore, the committed effective doses for 226 Ra, 224 Ra, 223 Ra, 228 Ra intake via ingestion of mineral waters for the members of public were calculated. 228 Ra [1,3,4,[6][7][8]. The currently approved methods for alpha emitting radium isotopes are based on radon emanation techniques. Due to the long ingrowth periods required by these methods, any 224 Ra and 223 Ra in the sample decay away and go undetected. For this reason, we used an alpha spectrometric method for the simultaneous determination of 226 Ra, 223 Ra and 224 Ra. In our laboratory, radium-lead-barium sulphate co-precipitation followed by gamma spectrometry was used for the determination of 228 Ra in mineral water samples.

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Contribution to the simultaneous determination of228Ra and226Ra by using 3M's EMPORETM radium rad disks

Cited by 25 publications

References 3 publications

Determination of 226Ra, 224Ra, 223Ra and 228Ra in mineral water samples of the Slovak Republic

Determination of 226Ra, 224Ra, 223Ra and 228Ra in mineral water samples of the Slovak Republic

Determination of radium-226 in environmental samples by inductively coupled plasma mass spectrometry after sequential selective extraction

Determination of 226Ra, 224Ra, 223Ra and 228Ra in mineral water samples of the Slovak Republic

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