[A method for determination of trace naphthalene and phenanthrene in water using constant-wavelength synchronous fluorescence spectrometry].
[A method for determination of trace naphthalene and phenanthrene in water using constant-wavelength synchronous fluorescence spectrometry].
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发表时间：
2012-07
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通讯作者：
G. Song;H. Xi;Yuexi Zhou;Jie Li;Jing-Tian Zhao;Jun Cui
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作者：
G. Song;H. Xi;Yuexi Zhou;Jie Li;Jing-Tian Zhao;Jun Cui
由于同步荧光法具有选择性好、灵敏度高、干扰少等特点，可用于多环芳烃（PAHs）多组分混合物的同时测定。建立了一种测定多环芳烃中两萘和菲的恒波长同步荧光光谱法。研究了不同溶剂等实验条件对荧光光谱特性的影响以及最佳波长差的选择。实验结果表明，选择Δ λ = 100时，两种多环芳烃同时定性定量。萘和菲的浓度在0.5-25.0 μ g × L（-1）范围内与荧光强度呈线性关系，相关系数分别为0.999 5和0.999 7。方法的检出限均小于0.03 μ g × L（-1），萘和菲的相对标准偏差分别为1.19%和180%（n=7）。结果表明，同步荧光光谱法可对这些化合物进行定性和定量分析。
In view of synchronous fluorescence possessing the character of good selectivity, high sensitivity, less interference, etc. it can be used for simultaneous determination of multi-component mixtures of polycyclic aromatic hydrocarbons (PAHs). A new method of constant-wavelength synchronous fluorescence spectrometry to determine two naphthalene and phenanthrene of PAHs was developed in this study. The effect of different experimental conditions, such as different disolvents for character of fluorescence spectra and the choose of the optimal wavelength difference were studied. Experiment showed that the simultaneous indentification and quantitative determination of the two PAHs when delta lambda = 100 was chosen. The fluorescence intensity was linearly related to naphthalene and phenanthrene concentration in the range of 0.5-25.0 microg x L(-1) with correlation coefficient 0.999 5 and 0.999 7, respectively. The detection limits were all lower than 0.03 microg x L(-1), and the relative standard deviations for naphthalene and phenanthrene were 1.19% and 180% (n=7), respectively. Results show that the compounds can be analyzed qualitatively and quantitatively by synchronous fluorescence spectrometry.