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三種酚類化合物的三維熒光光譜特性研究
摘要:三維熒光光譜技術(shù)通過(guò)在不同激發(fā)波長(zhǎng)下掃描發(fā)射光譜獲得熒光強(qiáng)度變化信息,由于其靈敏度高,選擇性好,被廣泛用于環(huán)境中污染物的監(jiān)測(cè).利用該方法研究3種酚類化合物的熒光光譜特性,在激發(fā)波長(zhǎng)為240~360 nm,發(fā)射波長(zhǎng)為260~500 nm范圍內(nèi),確定了苯酚、間甲酚和麝香草酚的熒光峰位置分別為272/300,274/300和276/304 nm.由于3種酚類物質(zhì)為同系物,結(jié)構(gòu)相似,因此得到的激發(fā)光譜和發(fā)射光譜在形狀上極為相似.工作液濃度在0.02~1.0 mg·L-1范圍內(nèi),3種酚類物質(zhì)的濃度與熒光強(qiáng)度之間均呈現(xiàn)較好的線性關(guān)系,且檢出限達(dá)到1 μg·L-1.實(shí)驗(yàn)結(jié)果表明,用三維熒光光譜法町對(duì)3種酚類化合物進(jìn)行定性和定量分析.Abstract:The fluorescence intensity information was collected by scanning its fluorescence spectra at different excitation wavelengths.Based on its high sensitivity and selectivity,excitation-emission fluorescence can be widely used for detection of pollutants in the environment.The characterizations of the three phenolic compounds were investigated by this method,and the fluorescence peaks of phenol,m-cresol and thymol were confirmed at 272/300 nm,274/300 nm and 276/304 nm when the excitation and emission wavelength were set in the range of 240-360 nm and 260-500 nm respectively.The excitation and emission spectra of the three phenolic compounds are very similar because of their analogical structure.The intensity of the spectrum has a good linear relationship with the concentration when the solution concentration is between 0.02 and 1.0 mg·L-1,and the limits of detection can reach at 1 μg·L-1.Results show that the three compounds can be analyzed qualitatively and quantitatively by excitation-emission fluorescence. 作者: 王歡博張玉鈞肖雪金丹趙南京殷高方郭立泉?jiǎng)⑽那?Author: WANG Huan-bo ZHANG Yu-jun XIAO Xue JIN Dan ZHAO Nan-jing YIN Gao-fang GUO Li-quan LIU Wen-qing 作者單位: 中國(guó)科學(xué)院安徽光學(xué)精密機(jī)械研究所,中國(guó)科學(xué)院環(huán)境光學(xué)與技術(shù)重點(diǎn)實(shí)驗(yàn)室,安徽,合肥,230031 期 刊: 光譜學(xué)與光譜分析 ISTICEISCIPKU Journal: SPECTROSCOPY AND SPECTRAL ANALYSIS 年,卷(期): 2010, 30(5) 分類號(hào): X830.2 關(guān)鍵詞: 苯酚 間甲酚 麝香草酚 三維熒光光譜 熒光特性 Keywords: Phenol m-cresol Thymol Excitation-emission fluorescence Fluorescence characterization 機(jī)標(biāo)分類號(hào): O65 X83 機(jī)標(biāo)關(guān)鍵詞: 酚類化合物 三維熒光光譜法 特性研究 Phenolic Compounds Three Study Characterization fluorescence intensity phenolic compounds fluorescence spectra linear relationship detection 熒光強(qiáng)度 激發(fā)波長(zhǎng) 酚類物質(zhì) 發(fā)射光譜 high sensitivity emission spectra three 定性和定量分析 基金項(xiàng)目: 國(guó)家(863計(jì)劃)項(xiàng)目【三種酚類化合物的三維熒光光譜特性研究】相關(guān)文章:
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