详细介绍利用激光诱导击穿光谱（laser-induced breakdown spectroscopy, LIBS）进行煤中碳（C）元素含量定量分析的技术和手段。 通过对光谱数据进行积分、 归一化、 筛选等处理, 克服了由于激光源能量起伏、 自吸收及样品表面粗糙度等因素引起分析精度差的缺点。 该方法已应用到激光煤质在线分析仪中并取得了满意的分析结果, 对煤粉中C元素含量分析的标准偏差不大于1.6%, 其方法同样可用于煤中其他元素的分析。

A method is introduced about quantitative analysis of carbon in coal by LIBS (laser-induced breakdown spectroscopy) in the present paper, and it introduces data optimization technology and method based on spectral data integration, normalization and data screening processing to overcome the poor quality of precision in the analysis because of laser source energy fluctuation, self-absorption, sample surface roughness etc. It is showed that the standard deviation（SD）is less than 1.6% using the method to analyze C element content in coal, and this method also can be used for other element analysis for coal.