Study On The Effect Of Harmful Substances On Human Health In The Environment

Harmful substances in the environment refer to substances that humans are exposed to under conditions of production or in daily life and that can cause illness or degrade health.Common high temperature,low temperature,radiation and dust.This article will study high temperature,low temperature,and radiation harmful substances that are closely related to the human body.By studying the harmful effects of harmful substances in the environment on human health,preventive measures are proposed,which can greatly reduce the harm of harmful substances to the human body and have important significance for human health.This article first uses the Markov chain to predict the harm of three hazardous substances in the environment that affect human health;Secondly,using COMSOL Multiphysics software to simulate the human body in different ambient temperature(low temperature and high temperature)and different intensity,different Duration of temperature distribution under UV radiation.Finally,combined with the results of the study,a series of preventive measures were proposed.The results of the study show that: The three hazardous substances in the environment—high temperature,low temperature,and radiation are harmful to human health.(1)When the external temperature is-40°C,the skin temperature of the human skin will drop to 10.8°C,and the temperature of the internal muscle layer will drop to 30°C,which will cause the skin to freeze;(2)When the external temperature is 50°C,Human skin epidermis temperature can reach 41.4 °C,internal muscle layer temperature rose to 38 °C,this time will cause the body to appear dizziness,nausea,weakness and other symptoms;(3)radiation emissivity of 0.8,the human skin epidermis temperature will rise to 38.1 °C,the temperature of the internal muscle layer also rises to 37.6°C,which can cause skin aging,which can cause skin cancer in severe cases.(4)When the radiation duration is 500 s,the epidermis temperature of human skin will rise to 37.4°C,and muscle temperature will also increase.It rises to 37.2°C,which can cause melanin production in the human skin.Melanin is deposited on skin pigments and forms brown skin.In severe cases,it can cause melanoma.In view of the harm to human body caused by high temperature,low temperature and radiation in the environment,this article proposes the following preventive measures.(1)After the air cooling is adopted for high temperature prevention,the human skin temperature can be lowered from 45°C to 37°C within 100 seconds,so that the human body returns to the normal state from the ultra-high fever state;(2)After taking the air heating prevention at a low temperature,it is possible to make The human skin temperature rises from 25°C to 37°C within 100 s,avoiding the appearance of hallucinations,ataxia,dementia,dysphonia,or slow symptoms in the human body;(3)Time protection,medium protection,and distance protection for radiation can reduce the human skin from 37.2°C to 37°C,allowing the human body to return to a normal state from a near-low fever state.