Laser-induced breakdown spectroscopy (LIBS) is a virtually non-destructive technique, which is being used to identify all elements of the periodic table simultaneously. Our aim in the present work is to find out the elemental constituents, including toxic elements present in the tendu leaf. Spectral lines of organic elements H, C, N, O and inorganic elements Na, Mg, Al, Ca, K, Si, Fe, Mn, Cr, Ba, Sb and Sr have been detected in the LIBS spectra of the leaf sample. Among these elements, Al, Ba, Sb and Sr are toxic elements. In addition to the appearance of atomic lines of the elements, electronic bands of molecules CN and C₂ are also observed in the LIBS spectra of tendu leaf. Ultraviolet–visible spectra (UV–spectra) have been recorded to identify the organic compounds in the sample, and the presence of nicotine with other organic compounds present in tendu leaf has been observed.

激光诱导击穿光谱 (LIBS) 是一种几乎无损的技术，可用于同时识别元素周期表中的所有元素。我们目前工作的目的是找出元素成分，包括天杜叶中存在的有毒元素。在叶片样品的 LIBS 光谱中检测到有机元素 H、C、N、O 和无机元素 Na、Mg、Al、Ca、K、Si、Fe、Mn、Cr、Ba、Sb 和 Sr 的谱线。在这些元素中，Al、Ba、Sb 和 Sr 是有毒元素。除了元素原子线的出现，分子CN和C _{2 的}电子带在tendu叶的LIBS光谱中也观察到了。已经记录了紫外-可见光谱 (UV-spectra) 以识别样品中的有机化合物，并且已经观察到尼古丁和天杜叶中存在的其他有机化合物的存在。