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Development of Laser Induced Breakdown Spectrometer for detection of carcinogenic metals in gall bladder stones

机译:用于检测胆囊结石中致癌金属的激光诱导击穿光谱仪的研制

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Laser Induced Breakdown Spectroscopy (LIBS) technique for the detection of carcinogenic metals in gallbladder stones samples was developed. We have studied the effect of the laser pulse energy and the delay time dependence on LIBS signal intensity. The constituting elements present in the test samples were identified by using the finger prints wavelength of elements of interest using NIST database. The detected carcinogenic metals were Cd, Ni, Cr, Pb and Hg. The plasma temperature and the electron density were also determined to check for the local thermal equilibrium conditions for the laser induced plasma generated by focusing the laser beam on gall bladder samples.
机译:开发了用于检测胆囊结石样品中致癌金属的激光诱导击穿光谱技术(LIBS)。我们已经研究了激光脉冲能量和延迟时间对LIBS信号强度的影响。通过使用NIST数据库使用感兴趣元素的指纹波长来识别测试样品中存在的构成元素。检出的致癌金属为镉,镍,铬,铅和汞。还确定了等离子体温度和电子密度,以检查通过将激光束聚焦在胆囊样品上而产生的激光诱导等离子体的局部热平衡条件。

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