梁爱惠, 蒋治良, 李振中. 烟碱-磷钼杂多酸缔合微粒体系的光谱研究及分析应用[J]. 分析测试技术与仪器, 2004, (4): 218-221.
引用本文: 梁爱惠, 蒋治良, 李振中. 烟碱-磷钼杂多酸缔合微粒体系的光谱研究及分析应用[J]. 分析测试技术与仪器, 2004, (4): 218-221.
LIANG Ai-hui, JIANG Zhi-liang, LI Zhen-zhong. Spectral Properties of Nicotine-PMo Heteropoly Acid and Its Analytical Application[J]. Analysis and Testing Technology and Instruments, 2004, (4): 218-221.
Citation: LIANG Ai-hui, JIANG Zhi-liang, LI Zhen-zhong. Spectral Properties of Nicotine-PMo Heteropoly Acid and Its Analytical Application[J]. Analysis and Testing Technology and Instruments, 2004, (4): 218-221.

烟碱-磷钼杂多酸缔合微粒体系的光谱研究及分析应用

Spectral Properties of Nicotine-PMo Heteropoly Acid and Its Analytical Application

  • 摘要: 采用分光光度法和共振散射光谱法研究了小烟碱 磷钼杂多酸缔合微粒体系.在波长300~800nm范围内,波长愈短缔合微粒体系的吸光度值愈大,在400nm处的吸光度与烟碱浓度在0.50~50.0μg/mL范围成良好线性关系,检出限(3σ)为0.1μg/mL.据此建立了一个测定烟草中烟碱含量的分光光度法.该法灵敏、简便、快速、准确、重复性好,平均回收率为99%~103%,相对标准偏差RSD为0.9%~1.3%.共振散射光谱研究结果表明,该体系存在烟碱-磷钼杂多酸缔合微粒,该微粒在420nm处存在共振散射效应.

     

    Abstract: The association particle systems of nicotine (NT)-PMo heteropoly acid were studied spectrophotometrically and resonance scattering spectroscopitrically. The absorbance values decreases with the wavelength in the range of 300-800 nm. The A400 nm is linear to the nicotine concentration in the range of 0.16~24 μg/mL. Its detection limit is 0.08 μg/mL NT. A new spectrophotometric method has been proposed for the determination of NT in real samples, with some advantages including high sensitivity, simplicity, rapidity and accuracy. The means recovery is 100.5%. The RSD is 1.00%(n=5). The results of resonance scattering spectra show that there are (NT-PMo)n association particles which exhibit resonance scattering effect at 420 nm.

     

/

返回文章
返回