CAJ | 학술논문

采集南昌市周边三个县的18个农田表层土壤样品,采用液固萃取-层析净化-高效液相色谱分析技术,研究了土壤中16种优控多环芳烃类物质的含量和组分特征,运用主成分因子荷载方法分析了其污染来源,并初步评价了其风险水平.结果表明,该区域内农田土壤33.3%轻度污染,最高污染样点PAHs含量为422.8ng/g,最低污染样点PAHs含量为75.2ng/g,平均含量为197.9ng/g,且远离城市的农田土壤残留水平明显低于靠近城市的农田土壤;PAHs的组分特征为以毒性水平较低的低环化合物为主;其污染来源主要是煤、天然气和汽油燃烧组成的混合源.
채집남창시주변삼개현적18개농전표층토양양품,채용액고췌취-층석정화-고효액상색보분석기술,연구료토양중16충우공다배방경류물질적함량화조분특정,운용주성분인자하재방법분석료기오염래원,병초보평개료기풍험수평.결과표명,해구역내농전토양33.3%경도오염,최고오염양점PAHs함량위422.8ng/g,최저오염양점PAHs함량위75.2ng/g,평균함량위197.9ng/g,차원리성시적농전토양잔류수평명현저우고근성시적농전토양;PAHs적조분특정위이독성수평교저적저배화합물위주;기오염래원주요시매、천연기화기유연소조성적혼합원.
Collecting farmland topsoil sample of three counties around Nanchang city, studying contens and characteristics of the component of 16 kinds of optimal control PAHs in soil using technologies of liquid-solid extraction, chromatography purification and HPLC, analysis their sources with principal constituent factor load method, and preliminarily assessing their levels of risks. The result shows that 33.3% of the farmland soil of this area has been polluted slightly, the content of the top polluted sampling point is 422.8ng/ g, the content of the bottom polluted sampling point is 75.2ng/g, the average content is 197.9ng/g,and the vestigital level in farmland soil far from city is remarkably lower than those which is near city. The characteristic of the component of PAHs is that they are mainly low cyclic compounds with low toxic level; those optimal control PAHs primarily originate from combustion of coal, natural gas and petrol.