Volume reduction of water samples to increase sensitivity for radioassay of lead contamination
Volume reduction of water samples to increase sensitivity for radioassay of lead contamination
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DOI：
10.1007/s13201-022-01669-5
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发表时间：
2022-05
影响因子：
5.5
通讯作者：
A. Aguilar-Arevalo;C. Canet;M. Cruz-Perez;A. Deisting;A. Dias;J. D'Olivo;F. Favela-Pérez;E. A. Garcés;A. González Muñoz;J. O. Guerra-Pulido;J. Mancera-Alejandrez;D. J. Marín-Lámbarri;M. Martínez Montero;J. R. Monroe;S. Paling;S. Peeters;P. Scovell;C. Türkoğlu;E. Vázquez-Jáuregui;J. Walding
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文献类型：
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作者：
A. Aguilar-Arevalo;C. Canet;M. Cruz-Perez;A. Deisting;A. Dias;J. D'Olivo;F. Favela-Pérez;E. A. Garcés;A. González Muñoz;J. O. Guerra-Pulido;J. Mancera-Alejandrez;D. J. Marín-Lámbarri;M. Martínez Montero;J. R. Monroe;S. Paling;S. Peeters;P. Scovell;C. Türkoğlu;E. Vázquez-Jáuregui;J. Walding
世界卫生组织(WHO)规定饮用水中铅的上限为十亿分之十。通常，要达到这种程度的灵敏度，需要昂贵的计量方法。为了提高低成本器件的灵敏度范围，探索了利用掺入铅210(铅)的沸水样品的体积缩小技术来增加溶质浓度的前景。铅是一种放射性铅同位素，可以用博尔比地下锗套件的高纯锗(HPGe)探测器来测量水样中的铅浓度。尚未检查接近世卫组织限值的浓度。本文介绍了一种从还原前的ppb浓度到还原后的ppb浓度保持铅含量%的体积还原技术的测量方法。这项工作还将体积缩减技术应用于伦敦自来水，并报告了HPGe探测器伽马计数的放射分析结果。在其他放射性同位素中，K、Pb、I和Lu在伦敦自来水样本中的ppb、ppb、ppb和ppb的测量浓度下被识别。这项技术保留了K。在还原之前，从同一水样中推断出稳定的铅，测量浓度为0.012 ppb。
The World Health Organisation (WHO) presents an upper limit for lead in drinking water of 10 parts per billion ppb. Typically, to reach this level of sensitivity, expensive metrology is required. To increase the sensitivity range of low-cost devices, this paper explores the prospects of using a volume reduction technique of a boiled water sample doped with Lead-210 (Pb), as a means to increase the solute’s concentration.Pb is a radioactive lead isotope and its concentration in a water sample can be measured with e.g. High Purity Germanium (HPGe) detectors at the Boulby Underground Germanium Suite. Concentrations close to the WHO limit have not been examined. This paper presents a measurement of the volume reduction technique retaining% ofPb starting from a concentration ofppb before reduction and resulting inppb after reduction. This work also applies the volume reduction technique to London tap water and reports the radioassay results from gamma counting in HPGe detectors. Among other radio-isotopes,K,Pb,I andLu were identified at measured concentrations ofppb,ppb,ppb andppb in the London tap water sample. This technique retainedofK. Stable lead was inferred from the same water sample at a measured concentration of 0.012 ppb, prior to reduction.