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Updated: Mar 29, 2026

Characterization and Application of Passive Samplers for Monitoring of Pesticides in Water
Published on: August 3, 2016
ENVIRONMENTAL MONITORING WITH PASSIVE DETECTORS AT CTN IN PORTUGAL
M F Pereira1, J Pereira2, S Rangel2
1Laboratório de Proteção e Segurança Radiológica (LPSR), Instituto Superior Técnico (IST), Universidade de Lisboa (UL), Estrada Nacional 10 (ao km 139,7), Bobadela LRS 2986-066, Portugal UL-IST, Centro de Ciências e Tecnologias Nucleares (C2TN), EN 10 (ao km 139,7), Bobadela LRS 2986-066, Portugal mnfpereira@ctn.ist.utl.pt.
Abstract:
The aim of this work is to present the methods in use for environmental dose assessment with passive detectors at Campus Tecnológico e Nuclear (CTN) of Instituto Superior Técnico, in Portugal. The methods are based on LiF:Mg,Ti (TLD-100) detectors inserted in Harshaw holders placed at four locations and exchanged on a quarterly basis. An initial group of measurements allowed the estimation of the time interval necessary to attain a stable value, the determination of a fading factor, as well as the calculation method for the assessment of the ambient dose equivalent rate.
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