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Precautions to be observed in the collection of air samples
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air sampling airborne radionuclides alpha count alpha energy alpha particles applied areas atmosphere atoms battery-powered beta beta radiation calculated concentration in pCi/1 count rate counter counting efficiency counting intervals counting period daughter products decay products deposition detector dose rate end of sampling equilibrium equipment exit filter external radiation filter holder filter paper flow meter flow rate gamma radiation half-life IAEA ICRP inhalation hazard Kusnetz method lung measuring radon Mechanical ventilation medical examination miners mining and milling monazite monitoring mR/h occupational exposure operations Personal samplers pre-employment examination Precautions procedures protection RaB and RaC radiation levels Radiological radionuclides radon and radon radon and thoron radon concentration radon daughters rate meter respiratory Safety sampling and counting sampling period scaler scintillation chamber sensitivity significant surface contamination termination of employment thorium mines thoron daughters Tsivoglou method two-filter method uranium and thorium uranium mines uranium or thorium urinalysis ventilation Vienna