建青黛无机元素组成SEM/EDS、ICP-AES及IR分析

Inorganic Element Compositions of Indigo Naturalis Analysed by SEM/EDS,ICP-AES and IR

建青黛为一种道地药材,其原植物为马蓝Baphicacanthus cusla（Nces）Bremek。本研究电子探针显微观察表明建青黛呈矿质状微粉未,颗粒的粒径约为10～100μm;X-射线能谱扫描分析（X-ray EDS）结果表明：青黛的元素构成（Mg,Al,Si,P,S,Ca,Mn,Fe）是相对稳定和有特征性的,主体元素为Ca（相对含量达76.9%～82.6%）。电感耦合高频等离子体发射光谱法（ICP-AES）分析结果表明：其钙（Ca）、镁（Mg）、铁（Fe）、钾（K）、锂（Li）和锰（Mn）等元素含量含量分别为33.25%、3.97%、0.77%、0.54%、0.19%和0.14%。建青黛呈现特定的红外光谱图谱,并具有相对稳定的碳酸根特征性强吸收峰（1460.80～1461.28 cm^-1）,在873.75～873.97 cm^-1处均有一较强的吸收峰,3422.92～3434.38 cm^-1处也均有一较宽的吸收峰。

（Jian） Indigo naturalis is a kind of authentic and superior Chinese medicinal materials, and its original plant is Baphicacanthus cusla （Nees） Bremek, produced in Xianyou county of Fujian. In this paper, micro-morphology of （Jian） indigo naturalis observed by the electron probe,show as mineralold micro-particle with 10 - 100 μm granularity. By X-ray EDS （energy dispersive spectroscopy）, it showed that the dements composition were oppositely steady, consisted of Mg, AI, Si, P, S, Ca, Mn and Fe, and with a characteristic principal element Ca （ relative contents is 76.9% - 82.6% ）.The contents of Ca,Mg,Fe,K,Li and Mn were respectively 332.5 mg/g（33.25% ） ,39.7 mg/g（3.97% ）, 7.7 mg/g（0.77% ） ,5.4 mg/g（0.54% ） ,1.9 mg/g（0.19% ） and 1.4 mg/g（0.14% ） ,analysed by ICP-AES （Induetively coupled plasma atomic emission spectgrometry）. （Jian） Indigo naturalis was shown specific infrared spectroscopy, with an charactenstlc absorption band of CO3 at 1460.80 - 1461.28 cm^-1 ,moreover,obvious absorb peaks were also steadily appeared at 873.75 -73.97 cm^-1 and 3422.92 -3434.38 cm^-1.