分析化学
分析化學
분석화학
CHINESE JOURNAL OF ANALYTICAL CHEMISTRY
2013年
10期
1465-1469
,共5页
杨亚男%孙海峰%朱亚先%吴芳%张勇
楊亞男%孫海峰%硃亞先%吳芳%張勇
양아남%손해봉%주아선%오방%장용
激光诱导纳秒时间分辨荧光%原位%红树叶片%菲
激光誘導納秒時間分辨熒光%原位%紅樹葉片%菲
격광유도납초시간분변형광%원위%홍수협편%비
Laser-induced nanosecond time-resolved fluorescence%In situ%Mangrove leaves%Phenanthrene
实现吸附于植物叶片表面多环芳烃(Polycyclic aromatic hydrocarbons,PAHs)的现场原位测定,是该研究领域的发展方向之一.本实验利用激光诱导纳秒时间分辨荧光(Laser-induced nanosecond time-resolved fluorescence,LITRF)系统,建立了原位测定吸附于秋茄(Kandelia obovata,Ko)、木榄(Bruguiera gymnorhiza,Bg)和桐花树(Aegiceras corniculatum,Ac)3种红树叶片表面菲(Phenanthrene,Phe)的新方法.本方法测定吸附于Ko、Bg和Ac叶片表面Phe的线性范围分别为2~1400 ng/spot,1~ 1000 ng/spot和4~ 2000 ng/spot,检测限分别为0.20,0.14和0.42 ng/spot,加标回收率为89.6%~ 108.1%,78.2% ~ 92.4%和93.2% ~ 112.9%,且方法的相对标准偏差小于6.0%(n=9).将方法用于实验室暴露样品的原位测定,并与光纤荧光法对比,其灵敏度、线性范围改善显著,更有利于实现植物叶片上PAHs的现场原位测定.
實現吸附于植物葉片錶麵多環芳烴(Polycyclic aromatic hydrocarbons,PAHs)的現場原位測定,是該研究領域的髮展方嚮之一.本實驗利用激光誘導納秒時間分辨熒光(Laser-induced nanosecond time-resolved fluorescence,LITRF)繫統,建立瞭原位測定吸附于鞦茄(Kandelia obovata,Ko)、木欖(Bruguiera gymnorhiza,Bg)和桐花樹(Aegiceras corniculatum,Ac)3種紅樹葉片錶麵菲(Phenanthrene,Phe)的新方法.本方法測定吸附于Ko、Bg和Ac葉片錶麵Phe的線性範圍分彆為2~1400 ng/spot,1~ 1000 ng/spot和4~ 2000 ng/spot,檢測限分彆為0.20,0.14和0.42 ng/spot,加標迴收率為89.6%~ 108.1%,78.2% ~ 92.4%和93.2% ~ 112.9%,且方法的相對標準偏差小于6.0%(n=9).將方法用于實驗室暴露樣品的原位測定,併與光纖熒光法對比,其靈敏度、線性範圍改善顯著,更有利于實現植物葉片上PAHs的現場原位測定.
실현흡부우식물협편표면다배방경(Polycyclic aromatic hydrocarbons,PAHs)적현장원위측정,시해연구영역적발전방향지일.본실험이용격광유도납초시간분변형광(Laser-induced nanosecond time-resolved fluorescence,LITRF)계통,건립료원위측정흡부우추가(Kandelia obovata,Ko)、목람(Bruguiera gymnorhiza,Bg)화동화수(Aegiceras corniculatum,Ac)3충홍수협편표면비(Phenanthrene,Phe)적신방법.본방법측정흡부우Ko、Bg화Ac협편표면Phe적선성범위분별위2~1400 ng/spot,1~ 1000 ng/spot화4~ 2000 ng/spot,검측한분별위0.20,0.14화0.42 ng/spot,가표회수솔위89.6%~ 108.1%,78.2% ~ 92.4%화93.2% ~ 112.9%,차방법적상대표준편차소우6.0%(n=9).장방법용우실험실폭로양품적원위측정,병여광섬형광법대비,기령민도、선성범위개선현저,경유리우실현식물협편상PAHs적현장원위측정.