【摘要】：采用快速溶劑萃取(ASE)、凝膠滲透色譜凈化(GPC)協(xié)同高效液相色譜(HPLC)檢測(cè)方法,分析貴州省典型鉛鋅冶煉區(qū)赫章縣41個(gè)表層農(nóng)田土壤樣品中16種優(yōu)控多環(huán)芳烴(PAHs)的含量水平,并對(duì)其污染特征、來(lái)源和生態(tài)風(fēng)險(xiǎn)進(jìn)行了分析.結(jié)果表明:典型鉛鋅冶煉區(qū)媽姑鎮(zhèn)農(nóng)田土壤∑PAHs的含量范圍為196~11592μg·kg~(-1),算術(shù)均值和中位值分別為1500μg·kg~(-1)和780μg·kg~(-1),媽姑鎮(zhèn)高含量的∑PAHs積累可能與當(dāng)?shù)亻L(zhǎng)時(shí)間的鉛鋅冶煉活動(dòng)有關(guān).PAHs組分特征表現(xiàn)出以2~3環(huán)和4環(huán)多環(huán)芳烴為主.根據(jù)荷蘭土壤干預(yù)值,媽姑鎮(zhèn)農(nóng)田土壤96.6%受到了不同程度的污染,其中,輕微污染、中度污染和重度污染所占比例分別為31.0%、24.1%和41.5%.研究區(qū)域PAHs的主要來(lái)源為煤和生物質(zhì)的不完全燃燒及石油源.媽姑鎮(zhèn)的新廠村、何家沖村、平橋組、拱橋村及赫章縣的達(dá)依鄉(xiāng)采樣點(diǎn)土壤中PAHs的TEQBap10超過(guò)了荷蘭土壤干預(yù)值規(guī)定的TEQBap10限值33.0μg·kg~(-1),說(shuō)明赫章縣、尤其是赫章縣典型鉛鋅冶煉區(qū)媽姑鎮(zhèn)農(nóng)田土壤已受到PAHs的污染,存在潛在的生態(tài)風(fēng)險(xiǎn).
[Abstract]:Rapid solvent extraction (ASE),) gel permeation chromatography was used to purify (GPC) and high performance liquid chromatography (HPLC) was used to detect the contents of 16 kinds of superior polycyclic aromatic hydrocarbons (PAHs) in 41 topsoil samples in Hezhang County, Guizhou Province. The pollution characteristics, sources and ecological risks are analyzed. The results showed that the range of 鈭，

本文編號(hào)：2245173