چکیده مقاله
The use of welding has been on the rise in recent years, and it is used in small and large workshops for repairing different parts According to studies conducted, 13 hazardous substances are produced, including chromium that we have considered in this study Chromium VI is a poisonous metal that can be found in a wide range of industrial environments The permissible exposure limit TWA for chromium VI is determined by the Occupational Safety and Health Administration OSHA and the American Conference of Governmental Industrial Hygienists ACGIH The compounds derived from chromium are one of the most important sources of risk to human health The hexavalent chromium compounds are more toxic than other chromium compounds Our objective of this study is to investigate and assess the risk of carcinogenic and non carcinogenic exposure to chromium for welders who are exposed to this substance In this study, which was carried out at a welding workshop in Tehran, the concentration of hexavalent chromium is determined based on the NIOSH method 7303 For measuring chromium VI in the work environment, employers usually use atomic absorption spectroscopy AAS This method is sensitive and accurate, and it can be used to measure chromium VI existing in air, water, and biological samples In this study, environmental and occupational carcinogenic and non carcinogenic risks were assessed by using the Risk Assessment Information System RAIS , which has been under the supervision of the Ministry of Energy since 1996 The risk assessment method which is used in this study is based on the guidelines recommended by the Occupational Safety and Health Administration OSHA and the United States Environmental Protection Agency EPA It also includes calculating the daily chronic intake CDI by considering the average concentration of the substance obtained from three measurement methods The reference concentration RfC and the slope factor CSF were used to evaluate non carcinogenic and carcinogenic risks, respectively The results showed that the risk of non carcinogenic exposure to chromium is higher than the permissible limit and the risk of non carcinogenic exposure to chromium is in the non permissible range HQ > 1
کلیدواژهها
نویسندگان
Aziz Azizpour
Master, Faculty of Environment, University of Tehran, Tehran, Iran
Alireza Pardakhti
PhD, ssistant Professor, Faculty of Environment, University of Tehran, Tehran, Iran
شیوه ارجاع
Azizpour, Aziz and Pardakhti, Alireza,1403,Assessment of Occupational Risk of Carcinogenic and Non-Carcinogenic Exposure to Chromium in Welders Working at a Welding Workshop in Tehran,The second national and the first international conference of environmental challenges: green industry and mining ,Tehran
ارائهشده در
مجموعه مقالات دومین کنفرانس ملی و اولین کنفرانس بین المللی چالش های محیط زیست: صنعت و معدن سبز25 اردیبهشت 1403 · تهران