Development of a High Volume Air Sampler for the Sensitive Detection of gamma-Emitting Radionuclides Attached to Aerosols. Results Obtained in the Test Period 1991-1992

摘要

In December 1990, the Laboratory of Radiation Research (LSO) of the NationalInstitute of Public Health and Environmental Protection (RIVM) set up an HVS sampling station at Bilthoven. This report is intended to describe the development of the HVS system, therefore the discussion of both equipment and analysis is emphasized. A general description of the HVS method is given in the first part of Chapter 2. In subsections, the methods of air-sampling, sample preparation and analysis are discussed. Detection limits, accuracy, and quality assurance are described in the last three sections of Chapter 2. The results of radionuclides measurements in air in 1991 and 1992 and those of additional investigations on the effect of sample pretreatment are included in Chapter 3. Chapter 4 rounds of the report with the conclusions. Detailed tables showing results over 1991 and 1992 are given in the Appendix.