南京設(shè)施蔬菜基地土壤中多環(huán)芳烴（PAHs）的污染特征、來(lái)源及健康風(fēng)險(xiǎn)評(píng)價(jià)
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中圖分類號(hào)：X82 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)： 1000-4440（2025）07-1438-10
Pollution characteristics， sources and health risk assessment of polycyclic aromatic hydrocarbons （PAHs） in soil of facility vegetable bases in Nanjing
SUN Jialan1，2， DONG Cheng1，2， SHENG Hongjie2 ZHANG Leigang2， CHEN Xiaolong2
YU Xiangyang2， GE Jing1，2
Academy ofAgricultural Sciences，Nanjing 21014， China）
Abstract：Thisstudy focused on thesoil from four facilityvegetablebases（D1-D4）in Luhe District，Nanjing City， collecting atotal of156 surface soil samples.The gas chromatography-mass spectrometry（GC-MS）method was employed to determinethecontentsof16polycyclicaromatic hydrocarbons（PAHs）.Theresultsshowedthatthecontentsof16polycyclicaromatichydrocarbons（PAHs）inthesoilsofD1，D2，D3 and D4 facility vegetable bases ranged from 82.82μg/kg to 145.90μg/kg ！ 106.08μg/kg to 182.63μg/kg ，70.58 μg/?g to 119.27μg/kg and 189.88μg/kg to 423.29 ，respectively. The mean values were 106.59μg/kg ， 143.21μg/kg ， 92.69μg/kg ，and 289.30μg/kg ，respectively.The median values were 111.71 μg/kg ，135.16μg/kg ，88.19 ，and 296.36μg/kg ，respectively. The sources of PAHs in the four facility vegetable sites were generallysimilar，with motorvehicleexhaust emissionsand petroleumbeing the main sources ofPAHs.Risk assessment basedonlifetimecarcinogenicriskvaluesrevealedthatPAHsinD1，D2，andD3soilsposednegligiblecarcinogenicrisks，whilethose in D4 soil wereatalow-risk level.Riskasessmentresultsbasedontoxicequivalentconcentrations indicatedthatthemean values of toxic equivalent concentrations of 16 PAHs （ TEQBaP16 ）ranged from 1.421μg/kg to 16.281 μg/kg ，while the mean values for seven carcinogenic PAHs （ TEQBaP7 ）ranged from 1.243μg/kg to 15.883μg/kg .This suggested that the seven carcinogenicPAHswere theprimarycontributors tosoilcarcinogenicrisk inthestudyarea，withBaPintheD4siteshowing the highest contribution rate （ 75.893% ）.Theresults of this study can provide a scientific reference for relevant authorities in Nanjing to prevent and control PAH contamination in soils of facility vegetable bases.
KeyWords：soil；polycyclic aromatic hydrocarbons（PAHs）；polution characteristics；risk assessment
設(shè)施蔬菜產(chǎn)業(yè)是現(xiàn)代農(nóng)業(yè)發(fā)展的重要組成部分，為蔬菜周年供應(yīng)提供了保障，然而，由于其種植密度大、復(fù)種指數(shù)高、頻繁灌溉施肥以及周邊工業(yè)排污等問(wèn)題，使得設(shè)施蔬菜基地土壤面臨更加復(fù)雜的污染風(fēng)險(xiǎn)，其中，多環(huán)芳烴（PAHs）作為一類典型的持久性有機(jī)污染物在蔬菜產(chǎn)地土壤中被頻繁檢出[1-2]，該類化合物具有致癌、致畸和致突變作用[3]。（剩余15395字）