Yang Xiu-Pei, Shi Bing-Fang, Zhang You-Hui, Tang Jing, Cai Duo-Chang
College of Chemistry and Chemical Engineering, China West Normal University, Nanchong, Sichuan 637002, People's Republic of China.
Spectrochim Acta A Mol Biomol Spectrosc. 2008 Feb;69(2):400-6. doi: 10.1016/j.saa.2007.04.013. Epub 2007 Apr 24.
In this paper, a novel method of constant energy synchronous fluorescence (CESF) was proposed to the simultaneous determination of different polycyclic aromatic hydrocarbons (PAHs) in a mixture of 16 components. When different appropriate intervals of the constant energy (Deltanu=1400 or 4800cm(-1)) were chosen during constant energy synchronous scanning, 13 PAHs could be identified and quantified by the corresponding synchronous spectra. Results show that their linear relations are fine and the limits of detection (LODs) were between 0.2 and 7.6ngml(-1). Then the application of CESF method proposed in the analysis of the real soil samples under the optimum conditions indicated that 11 PAHs could be identified and the total concentration of PAHs in a real soil sample is 5.1microg g(-1), most of PAHs in the soil samples had three or four rings. Recoveries of these PAHs were from 70.9 to 121.4% in most cases. This CESF method is a simple, rapid, sensitive method with high resolution and also suitable to analyze the complex mixtures of PAHs in other environmental samples.
本文提出了一种新型的恒能量同步荧光（CESF）方法，用于同时测定16种组分混合物中的不同多环芳烃（PAHs）。在恒能量同步扫描过程中，当选择不同的合适恒能量间隔（Δν = 1400或4800cm⁻¹）时，可通过相应的同步光谱对13种PAHs进行鉴定和定量。结果表明，它们的线性关系良好，检测限（LODs）在0.2至7.6ng mL⁻¹之间。然后，在最佳条件下将CESF方法应用于实际土壤样品分析，结果表明可鉴定出11种PAHs，实际土壤样品中PAHs的总浓度为5.1μg g⁻¹，土壤样品中的大多数PAHs含有三个或四个环。在大多数情况下，这些PAHs的回收率为70.9%至121.4%。这种CESF方法是一种简单、快速、灵敏且具有高分辨率的方法，也适用于分析其他环境样品中PAHs的复杂混合物。
