A Rapid Method for Measuring Strontium-90 Activity in Crops in China

Pan, Ling-Jing; Yu, Guobing; Wen, Deyun; Chen, Zhi; Sheng, Liusi; Liu, Chung-King; Xu, X. George

doi:10.1051/epjconf/201715301003

Cited by 2 publications

(4 citation statements)

References 16 publications

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“…26 Pb exists in 210 Pb which emits radiation, and the nuclide interferes Sr analysis in radiometric analysis such as the LBC method. Therefore, when the Eichrom Sr resin is used in the radiometric analysis, the spectrophotometric separations using LSC 32 or beta-ray spectrometer 33 will be needed.…”

Section: Resultsmentioning

confidence: 99%

“…In contrast, the recovery rate in Icas-ICP−MS analysis gradually decreases with increase of sample injection exceeding 60 mL 25 ; however, with nitrate precipitation-LBC analysis, the sample volume can 26 Pb exists in 210 Pb which emits radiation, and the nuclide interferes Sr analysis in radiometric analysis such as the LBC method. Therefore, when the Eichrom Sr resin is used in the radiometric analysis, the spectrophotometric separations using LSC 32 or beta-ray spectrometer 33 will be needed.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Rapid Quantification of Radioactive Strontium-90 in Fresh Foods via Online Solid-Phase Extraction–Inductively Coupled Plasma–Dynamic Reaction Cell-Mass Spectrometry and Its Comparative Evaluation with Conventional Radiometry

et al. 2019

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This paper describes a rapid quantification method for radioactive strontium ( 90 Sr) in fresh foods (perishable foods) and has been comparatively evaluated with the common classical radiometric quantification method. Inductively coupled plasma–dynamic reaction cell-mass spectrometry with online solid-phase extraction (cascade-ICP–MS) rapidly determines 90 Sr in a pure water-based sample. Despite its advantages, its application to fresh foods (perishable foods) has not yet been reported; however, the analytical potential of this method for fresh foods must be evaluated. In this study, 90 Sr was determined in 12 fresh foods via improved cascade-ICP–MS (Icas-ICP–MS). Addition and recovery tests were demonstrated using real samples of grape, apple, peach, Japanese pear, rice, buckwheat, soybean, spinach, shiitake mushroom, grass, sea squirt, and flounder. With a decomposed solution of Japanese pear, the measurement value coincided with the amount of spiked 90 Sr. The reproducibility of the measurements was represented by relative standard deviations of 14.2 and 5.0% for spiked amounts of 20 and 200 Bq/kg, respectively ( n = 10), and the recovery rates were 93.7 ± 7.1%. In this case, the limit of detection (LOD) was 2.2 Bq/kg (=0.43 pg/kg). These results were compared with the data obtained using a common classical radiometric quantification method (nitrate precipitation-low background gas flow counter (LBC) method) in the same samples. Both the methods showed equivalent performances with regard to reproducibility, precision, and LODs but different analysis times. Icas-ICP–MS required ∼22 min for analysis, whereas the nitrate precipitation-LBC method required 20 days, confirming that Icas-ICP–MS is the suitable method for analyzing 90 Sr in fresh foods.

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Section: Resultsmentioning

confidence: 99%

Section: ■ Results and Discussionmentioning

confidence: 99%

Rapid Quantification of Radioactive Strontium-90 in Fresh Foods via Online Solid-Phase Extraction–Inductively Coupled Plasma–Dynamic Reaction Cell-Mass Spectrometry and Its Comparative Evaluation with Conventional Radiometry

et al. 2019

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“…The residue was dissolved in 0.1 M HCl. After removing by precipitation of two radiometric interfering of 90 Sr ( 210 Pb and 210 Bi) (Pan et al 2017), the 90 Y that may be already present in the sample was removed by using 20% Bis-(2-ethylhexyl) phosphate (HDEHP) in toluene. The acid phase was recovered.…”

Section: Sample Preparation For 90 Sr Determinationsmentioning

confidence: 99%

“…Indeed, food authenticity is addressed using several laboratory methods that lead to large data sets. Multivariate approaches are then required to process these data and to give an answer about the classification of the analyzed samples (Oliveri and Downey 2012;Oliveri and Simonetti 2016).…”

Section: Msm Identification By Multivariate Approachmentioning

confidence: 99%

Innovative approaches for identifying a mechanically separated meat: evaluation of radiostrontium levels and development of a new tool of investigation

et al. 2019

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Due to food safety concerns, the European Food Safety Authority (EFSA) asked to identify useful parameters for identifying the mechanically separated meat (MSM). In this work, the 90 Sr levels of MSM products were assessed for evaluating the suitability of this parameter for MSM identification. Indeed, this contaminant may accumulate in animal bones and bone fragments may be present in MSM. One hundred samples of fresh meats and meat products composed of different MSM percentages and without MSM were analyzed by ultra-low-level liquid scintillation counting. The 90 Sr activity concentrations detected in meat products with high percentage of MSM were significantly higher (p C 0.05) (0.099 Bq kg -1 ) than those of fresh meats (0.024 Bq kg -1 ) and meat products containing low percentage of MSM (0.011 Bq kg -1 ). The percentage of correct MSM identification was 61%. In order to increase this percentage and to develop a new tool of investigation, the 90 Sr was elaborated in combination with other three parameters: 88 Sr, Ca and ash percentage, through a multivariate approach. The precision of this tool of investigation was significantly increased (87%), higher than the reference method (Ca level) (76%), representing a valid novel approach in the identification of MSM products.

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A Rapid Method for Measuring Strontium-90 Activity in Crops in China

Cited by 2 publications

References 16 publications

Rapid Quantification of Radioactive Strontium-90 in Fresh Foods via Online Solid-Phase Extraction–Inductively Coupled Plasma–Dynamic Reaction Cell-Mass Spectrometry and Its Comparative Evaluation with Conventional Radiometry

Rapid Quantification of Radioactive Strontium-90 in Fresh Foods via Online Solid-Phase Extraction–Inductively Coupled Plasma–Dynamic Reaction Cell-Mass Spectrometry and Its Comparative Evaluation with Conventional Radiometry

Innovative approaches for identifying a mechanically separated meat: evaluation of radiostrontium levels and development of a new tool of investigation

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