en Radiation Biology Radiation Biology تحقيق بديع Original Research <div style="text-align: justify;"><span style="font-size:10pt"><span style="text-justify:newspaper"><span style="text-kashida-space:50%"><span style="line-height:119%"><span style="font-family:Calibri"><span style="color:black"><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-US">Background</span></span></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-weight:bold"><span style="language:en-US">:</span></span></span></span></span> <span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US">The utilisation of radiation sources can increase radioactivity levels within radiation-applied laboratories, thereby affecting the health of individuals regularly working in such environments. This study aimed to assess the activity concentrations of radionuclides and dose rates across various research laboratories, including nuclear technique laboratories and others, in order to determine the effect of radiation sources on air quality. </span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-US">Materials and Methods: </span></span></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US">Dust particles in the air were collected and analysed using a low - background gamma spectrometer. The study was conducted in five distinct laboratories with varying frequencies of radioactive material usage. The differences in the activity concentrations of 40K, </span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="language:en-US">²³²</span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US">Th, </span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="language:en-US">²³⁸</span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US">U, </span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="language:en-US">²²⁶</span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US">Ra/</span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="language:en-US">²²²</span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US">Rn, </span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="language:en-US">²²⁸</span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US">Th/</span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="language:en-US">²²⁰</span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US">Rn, and </span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="language:en-US">²¹⁰</span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US">Po were compared between laboratories and with different periods of the month. To assess potential risks, the annual effective dose rate resulting from dust inhalation was estimated for two adult groups (male and female). </span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-US">Results:</span></span></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US"> High activity levels were observed in lab 1 because of the presence of radioactive sources, standard samples, and diverse environmental samples. The radioactivity levels for various radioisotopes exhibited minimal changes between the weeks of the month. Lab 1 also recorded the highest estimated radiation dose with effective doses of 2300 </span></span></span><span lang="el" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:el">&mu;</span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US">Sv y</span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="language:en-US">^-1</span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US"> and 1886 </span></span></span><span lang="el" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:el">&mu;</span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US">Sv y</span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="language:en-US">^-1</span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US"> for men and women, respectively, surpassing the recommended ICRP value of 1 mSv y</span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="language:en-US">^-1</span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US">. </span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-US">Conclusion: </span></span></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="language:en-US">Assessment of the activity concentrations in airborne dust for different laboratory types showed that the health impacts of pollution are not significant. However, laboratories dealing with radioactive sources exhibited high radioactivity levels and should undergo frequent monitoring.</span></span></span></span></span></span></span></span></span></div> Radioactive contamination in the air, HPGe spectrometer, Annual effective dose. 551 557 http://ijrr.com/browse.php?a_code=A-10-1-1208&slc_lang=en&sid=1 T.H. Ngan Thy thnthy@hcmus.edu.vn 7900319475328460027880 7900319475328460027880 Yes Nuclear Technique Laboratory, University of Science, Ho Chi Minh City, Vietnam N.L. Thich Vietnam National University, Ho Chi Minh City, Vietnam 7900319475328460027881 7900319475328460027881 No Vietnam National University, Ho Chi Minh City, Vietnam N.T. Cung 7900319475328460027882 7900319475328460027882 No Vietnam National University, Ho Chi Minh City, Vietnam T.T. Phuong Dung 7900319475328460027883 7900319475328460027883 No Binh Thuan Resources & Environment Monitoring, Binh Thuan province, Vietnam H.T. Yen Hong 7900319475328460027884 7900319475328460027884 No Nuclear Technique Laboratory, University of Science, Ho Chi Minh City, Vietnam T.H. Lang 7900319475328460027885 7900319475328460027885 No Vietnam National University, Ho Chi Minh City, Vietnam