CAJ | 학술논문

采集黄河头道拐断面冰体样品，用毛细管GC-FID方法测定了冰体中EPA优先控制的16种多环芳烃（Polycyclic aromatic hydrocarbons，PAHs）的残留水平。结果表明，16种PAHs的加标回收率为80.3%~106.1%，方法检出限的范围为0.01~0.12 ng·L-1，适合该断面冰体样品中PAHs的测定。27个冰体样品中16种PAHs的含量范围为0.71~11.04 ng·L-1，平均含量为3.88 ng·L-1。其中荧蒽（Fla）和芘（Pyr）为最主要的污染物，检出率分别为72.7%和86.4%。PAHs的时空分布具有一定的规律性，凌汛期含量较少，初始冰盖形成后达到最大值，当河道内连续冰盖形成后，随冰层厚度的增加呈下降趋势，且下层冰体含量高于上层冰体。运用主成分分析法定量解析其污染来源，从16种PAHs中提取3个主成分，总方差贡献率为80.5%，主成分的贡献率分别为煤炭燃烧源36.6%、交通源36.4%及炼焦和木材燃烧来源7.5%。
채집황하두도괴단면빙체양품，용모세관GC-FID방법측정료빙체중EPA우선공제적16충다배방경（Polycyclic aromatic hydrocarbons，PAHs）적잔류수평。결과표명，16충PAHs적가표회수솔위80.3%~106.1%，방법검출한적범위위0.01~0.12 ng·L-1，괄합해단면빙체양품중PAHs적측정。27개빙체양품중16충PAHs적함량범위위0.71~11.04 ng·L-1，평균함량위3.88 ng·L-1。기중형은（Fla）화비（Pyr）위최주요적오염물，검출솔분별위72.7%화86.4%。PAHs적시공분포구유일정적규률성，릉신기함량교소，초시빙개형성후체도최대치，당하도내련속빙개형성후，수빙층후도적증가정하강추세，차하층빙체함량고우상층빙체。운용주성분분석법정량해석기오염래원，종16충PAHs중제취3개주성분，총방차공헌솔위80.5%，주성분적공헌솔분별위매탄연소원36.6%、교통원36.4%급련초화목재연소래원7.5%。
Polycyclic aromatic hydrocarbons(PAHs)are ubiquitous and carcinogenic in nature. We collected ice samples from Toudaoguai section of the Yellow River and analyzed residual levels of 16 US EPA PAHs using GC-FID. The results showed that overall recoveries were ranged from 80.3%~106.1%with detection limits of 0.01~0.12 ng·L-1. The method approved to be fit for the determination of PAHs in ice samples. The concentrations of PAHs were in the ranges of 0.71~11.04 ng·L-1, with a mean concentration of 3.88 ng·L-1. The detection fre-quency for major pollutants Fluoranthene(Fla)and Pyrene(Pyr)was 72.70% and 86.40%, respectively. The concentrations of PAHs showed a decline as the thickness of ice increased, and were higher in the lower than in the upper part of ice body. Principal component analysis identified that three sources were the major contributor to PAHs. They were coal combustion(36.6%), traffic source(36.4%), and coking and wood combustion(7.5%).