Effect of Fluorine on Human Health in High-fluorine Areas in Yuanzhou District, Guyuan City, Ningxia Autonomous Region
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ABSTRACT
BACKGROUNDIn recent years, with the improvement of people's quality of life, people pay more and more attention to health, and thus endemic fluorosis attracts more and more attention. While paying attention to the analysis of the fluorine pollution source and research on exposure pathways, it is also necessary to carry out health risk evaluations of fluorine exposure pathways. According to the survey, the fluorine content in the surface soil of Pengbao Town, Yuanzhou District, and Guyuan City is higher than the local background value.OBJECTIVESTo investigate the effect of fluorine on human health.METHODSThe health risk assessment model recommended by the US Environmental Protection Agency was used to assess the human health risk. According to the actual situation of endemic diseases caused by excessive fluorine, the samples of surface soil, stratum rocks, crops and groundwater in Pengbao Town, Yuanzhou District, and Guyuan City were collected. The related elements were analyzed by inductively coupled plasma-optical emission spectrometry, atomic fluorescence spectrometry and other analytical methods to study the influence of excessive fluorine on human health in Pengbao Town of Yuanzhou District, and Guyuan City.RESULTSThe evaluation results showed that the health risk index (HQ) of fluorine exposure pathways in cereals and vegetables was less than 1, and there was no non-carcinogenic risk. The main way of exposure risk of local fluorine was drinking groundwater, and the related health risk index (HQ) was more than 1, which indicated that drinking groundwater with excessive fluorine may have potential non-carcinogenic risk. The annual total health risk was 1.69×10-8, which was lower than the maximum acceptable annual health risk level of 5.0×10-5 recommended by the International Commission for Radiological Protection (ICRP).CONCLUSIONSBased on the results of the fluorine health risk assessment, it is proposed that the safety of drinking water in this area needs more attention.
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