The practical use of electrets in a public health radon remediation campaign |
| |
| Institution: | 1. Department of Public Health, Environments and Society, London School of Hygiene and Tropical Medicine, 15-17 Tavistock Place, London WC1H 9SH, United Kingdom;2. Medical Research Council Clinical Trials Unit at University College London, 90 High Holborn, London WC1V 6LJ, United Kingdom;3. 56T, Chelsea and Westminster NHS Hospital Foundation Trust, 56 Dean Street, London W1D 4PR, United Kingdom;4. Department of Global Health and Development, London School of Hygiene and Tropical Medicine, 15-17 Tavistock Place, London WC1H 9SH, United Kingdom;5. Institute for Global Health, University College London, Royal Free Hospital, Rowland Hill Street, London NW3 2PF, United Kingdom;6. HIV i-base, 107 The Maltings, 169 Tower Bridge Road, London SE1 3LJ, United Kingdom;7. SH:24, 35a Westminster Bridge Road, South Bank, London SE1 7JB, United Kingdom |
| |
| Abstract: | As part of a long-term assessment of domestic radon in Northamptonshire, England, a batch of 50 commercially available electrets was deployed for nearly 1000 exposures, individual exposure periods ranging from one to eight weeks. Responsivity was comparable with that of recently-calibrated Durridge RAD-7 continuously-monitoring equipment. Voltage history analysis indicated mean voltage decay during manufacturers' QA assessment of 0.059 ± 0.026 V day?1, increasing to 0.114 ± 0.073 V day?1 during storage to first use and to 0.204 ± 0.49 V day?1 during inter-deployment storage. At a representative elevated radon concentration of 500 Bq m?3, the resulting perturbation is 3% over a 7-day deployment; at the typical mean Northamptonshire level of 80 Bq m?3 it approaches 22%. Each electret can be used for up to 25 measurements, which makes the technology attractive for organisational use. It is not suited for deployment by individual householders. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
