CAJ | 학술논문

为了加强西安石油污染防控，并为石油污染物在土壤中的行为研究提供基础数据，利用气相色谱-质谱法对西安市城郊典型蔬菜基地37个表层土壤和37个地下水样品中的正构烷烃进行测定，并对其分布特征、来源及影响因素进行了研究。结果表明：西安城郊土壤中正构烷烃含量在1.06~4.01μg·g-1之间，以高碳奇数烷烃为主，不同地理区域之间在统计学上无显著差异，地下水中正构烷烃含量在9.2~99.35μg·L-1之间，与国内外其他地区相比，土壤和地下水存在一定的污染；基于正构烷烃的分子指标的诊断表明，土壤中正构烷烃为混合来源，具有较强的高等植物输入优势，显示出草本植物特征和一定程度的石油污染特征；土壤理化性质与正构烷烃含量的相关性分析表明，土壤中正构烷烃含量与有机质、含水量、碳氮比（C/N）和碳磷比（C/P）呈显著正相关，多元回归分析表明有机质和含水量是主要的影响因子。
위료가강서안석유오염방공，병위석유오염물재토양중적행위연구제공기출수거，이용기상색보-질보법대서안시성교전형소채기지37개표층토양화37개지하수양품중적정구완경진행측정，병대기분포특정、래원급영향인소진행료연구。결과표명：서안성교토양중정구완경함량재1.06~4.01μg·g-1지간，이고탄기수완경위주，불동지리구역지간재통계학상무현저차이，지하수중정구완경함량재9.2~99.35μg·L-1지간，여국내외기타지구상비，토양화지하수존재일정적오염；기우정구완경적분자지표적진단표명，토양중정구완경위혼합래원，구유교강적고등식물수입우세，현시출초본식물특정화일정정도적석유오염특정；토양이화성질여정구완경함량적상관성분석표명，토양중정구완경함량여유궤질、함수량、탄담비（C/N）화탄린비（C/P）정현저정상관，다원회귀분석표명유궤질화함수량시주요적영향인자。
Normal(n)-alkanes in the environment may come from uses of petroleum and natural gas. In this study, contents of n-ankanes in thirty-seven topsoil and thirty-seven groundwater samples, collected from typical vegetable fields in the outskirts of Xiˊan city, were ana-lyzed using gas chromatograph with mass selective detection(GC/MS). Total n-alkane concentrations in the soils varied from 1.06 to 4.01μg·g-1. N-alkanes with odd C number were predominant in most soil samples. No significant differences were found between different areas. Total n-alkane concentrations in the groundwater samples ranged from 9.2 to 99.35 μg·L-1. Compared to other regions, n-alkane concentra-tions in soil and groundwater were higher in the outskirts of Xiˊan city. Sources of n-alkanes in soils of this region were mainly terrestrial higher plants, especially herbaceous plants. There was positive correlation between the concentrations of n-alkanes and soil properties such as organic matter, moisture content, C/N and C/P. Organic matter and moisture content determined the distribution of n-alkanes in soil.