The method of trace detection of benzene, toluene, ethylbenzene, and xylene(BTEX) was studied in ambient air using laser two-photon ionization.
利用激光双光子电离技术研究了在大气压力下探测痕量苯系物的方法。
Similarities in the REMPI spectra of all the ions could lead to greater trace detection sensitivity if the total ion yield is concerned instead of only the parent ions.
由于共振增强多光子电离（REMPI）母体离子谱与碎片离子谱的相似性，可用探测总离子信号的方法来替代单独的母离子探测，有效地提高痕量探测的灵敏度。
Similarities in the REMPI spectra of all the ions could lead to greater trace detection sensitivity if the total ion yield is concerned instead of only the parent ions.
由于共振增强多光子电离（REMPI）母体离子谱与碎片离子谱的相似性，可用探测总离子信号的方法来替代单独的母离子探测，有效地提高痕量探测的灵敏度。
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