Rapid screening technique for gross α and gross β estimations in aqueous samples during radiation emergency

IF 1.4 3区化学 Q4 CHEMISTRY, INORGANIC & NUCLEAR

Radiochimica Acta Pub Date : 2024-04-09 DOI:10.1515/ract-2023-0213

Sonali Paresh Deogaonkar-Bhade, Rajesh Sankhla, Pramilla D. Sawant

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Abstract

A portable liquid scintillation counting system has been used as a rapid screening tool for radiological characterization and in situ measurements of aqueous samples. The methodology was standardized based on the Pulse Length Index for gross α and gross β activity determinations in aqueous solutions by means of a portable Liquid Scintillation Counter (LSC). This single compact PMT system yielded precise results for aqueous test samples, which were validated against a conventional HIDEX 300SL LSC system. The sensitivity of the portable LSC for gross measurements was investigated thoroughly for various combinations of scintillation cocktails and sample proportions, and found to be well below the Operational Intervention Levels (OILs) recommended by Atomic Energy Regulatory Board (AERB) during radiation emergency scenarios. Gross α- and β-activity measurements by means of the portable LSC system have shown this procedure to be effective for preliminary screening and evaluating the total radioactivity in aqueous samples during such radiation emergencies.

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辐射紧急情况下水样中总α和总β估算的快速筛选技术

便携式液体闪烁计数系统已被用作一种快速筛选工具，用于水溶液样品的放射性特征描述和现场测量。利用便携式液体闪烁计数器（LSC）测定水溶液中的总α和总β活度时，根据脉冲长度指数对方法进行了标准化。这种单一的紧凑型 PMT 系统对水溶液测试样品产生了精确的结果，并与传统的 HIDEX 300SL LSC 系统进行了验证。针对闪烁鸡尾酒和样品比例的各种组合，对便携式 LSC 的毛测量灵敏度进行了深入研究，结果发现其灵敏度远低于原子能管理局（AERB）在辐射紧急情况下建议的操作干预水平（OILs）。利用便携式 LSC 系统进行的总α和β放射性测量结果表明，在此类辐射紧急情况下，该程序可有效地初步筛选和评估水样中的总放射性。

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来源期刊

Radiochimica Acta 化学-核科学技术

CiteScore

2.90

自引率

16.70%

发文量

审稿时长

6 months

期刊介绍： Radiochimica Acta publishes manuscripts encompassing chemical aspects of nuclear science and technology.