为了研究我国寒区普遍存在的地下水有机污染物-多环芳烃萘在浅层地下水中的降解过程，本次以松辽盆地某石油污染场地为研究区，采用分析纯的石英砂和典型铁矿物磁铁矿、菱铁矿及绿泥石模拟含水层中的矿物，通过室内静态吸附批次实验，模拟污染场地低温地下水环境，探究萘在下不同类型含铁矿物上的吸附行为。研究结果表明：磁铁矿、菱铁矿和绿泥石对萘的吸附量由大到小依次为磁铁矿＞菱铁矿＞绿泥石，平衡吸附量分别为1.503mg/g 、1.049mg/g和 0.756mg/g。含铁矿物对萘的吸附等温曲线符合Langmuir方程，属于表面分子吸附。在铁矿物质量分数为20%时，溶液中二价铁离子浓度变化明显，表明铁离子参与矿物吸附过程。本次研究以铁矿物的吸附为出发点，通过实验模拟低温浅层含水层中铁矿物对萘的吸附，明确萘在典型铁矿物周边的存在特征，为深化介质对萘吸附机理研究奠定基础，并且可以为我国北方其他温度相对较低的地区提供借鉴。

In order to study the degradation process of polycyclic aromatic hydrocarbon naphthalene ( PAH － naphthalene ) in shallow groundwater，a petroleum－contaminated site in Songliao Basin is selected as the study area． The pure quartz sand and typical iron－containing minerals magnetite，siderite and chlorite are used to simulate the minerals in aquifers． The adsorption behavior of naphthalene on different types of iron ore is studied by simulating the low－temperature groundwater environment in contaminated sites through batch experiments． The results show that the adsorption capacity of magnetite，siderite and chlorite to naphthalene is magnetite ＞ siderite ＞ chlorite from large to small，and the equilibrium adsorption capacity is 1． 503，1． 049 and 0． 756 mg /g，respectively． The adsorption isotherm of naphthalene accords with Langmuir equation and belongs to surface molecular adsorption． When the mass fraction of iron－containing minerals is 20%，the concentration of divalent iron ions in the solution changes obviously，indicating that iron ions participate in the mineral adsorption process．Based on the adsorption of iron － containing minerals，this study simulates the adsorption of naphthalene by iron － containing minerals in shallow aquifer at low temperature，and explores the adsorption performance of naphthalene by different iron minerals at low temperature，which serves as a reference for other areas with relatively low temperature in North China．