Pollution Characteristics Of Polycyclic Aromatic Hydrocarbons On Snow And Soil In Hailuogou

Polycyclic aromatic hydrocarbons (PAHs) is a kind of aromatic hydrocarbons bya class of two and more than two benzene via conjugate formation, as the crystallinematerial having a melting point,boiling point,colored, and octanol water partitioncoefficient of high,low vapor pressure and water soluble,organic pollutants widelydistribution for a class of global inside,and has a serious hazard to human health.Inthis study,respectively in2012January,2013January and2014January in HailuogouGongga mountain snow sample collection and in2014January acquisition ofHailuogou soil samples,16kinds of multi priority polycyclic aromatic hydrocarbonsof snow and soil were analysed by GC/MS.Annual variation of polycyclic aromatichydrocarbons in Hailuogou new snowfall,and its origin was analyzed bycharacteristics of pollutants ratio method.Study on pollutant characters of Hailuogousurface soil samples in different functional areas of PAHs in the samples,thedifference between the components, and its source apportionment and riskassessment.For Hailuogou Gongga mountain snow,this continued for three years in highlevels of PAHs monomers are Philippines (Phe), naphthalene (Nap),fluorene (Flo) andfluoranthene (Flu).By comparing the long period of three years,The Hailuogou newsnow in the distribution of PAHs are basically the same,still mainly in the lowmolecular weight (2-4rings) PAHs based,and high molecular weight PAHsrarely,some undetected due to low levels, but the content of polycyclic aromatichydrocarbons in the presence of the monomer or differences.PAHs compoundscharacterized by the ratio method for new snowfall conduce qualitative analysis ofpolycyclic aromatic hydrocarbons,the results show that in2012,2013and2014thisyear,The Hailuogou new major source of PAHs in the snow or to coal pollution andvehicle exhaust emissions mainly, but also increased the number of mixed originsources.The polycyclic aromatic hydrocarbons in the atmosphere transmissiondistance estimated transmission distance on PAHs pollution source model furthercalculation shows that, in the past three years, the most distant sources of pollution inthe year to year decline, however,polycyclic aromatic hydrocarbons in Hailuogou newsnow is still relatively far away from the source of pollution. Study on polycyclic aromatic hydrocarbons in surface soil samples of Hailuogouis divided into three functional areas:living area, traffic area and scenicarea.Concentration sampling point ΣPAHs order: traffic area> Living Area>Scenic.16kinds of polycyclic aromatic hydrocarbons in surface soil of Hailuogoutotal concentration range is377.47-1368.72ng/g, the average concentration is781.32ng/g, traffic area and living area mainly in the the large molecular weight (highrings) PAHs, in the scenic area has small molecular weight (low rings) PAHs.ByPAHs isomer ratio analysis sources of PAHs in the soil, the results show that TheHailuogou surface soil is a major source of PAHs in combustion sources, especiallyfossil fuels, such as wood and coal incomplete combustion and vehicle exhaustemissions.Relationship between16PAHs soil and snow in the sample is very poor,R2=0.01045correlation; low molecular PAHs good, R2=0.81658.Through the use ofbenzo (a) pyrene equivalent toxicity carcinogenicity of polycyclic aromatichydrocarbons in soil of Hailuogou area were analyzed, the results show that the studyarea has potential ecological risk to the health of residents, we should pay moreattention to.