【作者】 王春龙； 刘建国； 赵南京； 石焕； 鲁翠萍； 刘立拓； 马明俊； 章炜； 陈东； 张玉钧； 刘文清；

【Author】 Wang Chunlong,Liu Jianguo,Zhao Nanjing,Shi Huan,Lu Cuiping,Liu Lituo,Ma Mingjun,Zhang Wei,Chen Dong,Zhang Yujun,Liu Wenqing(Key Laboratory of Environment Optics&Technology,Institute of Anhui Optics Fine Mechanics,Academy of Science,Hefei,230031)

【机构】 中国科学院环境光学与技术重点实验室,中国科学院安徽光学精密机械研究所；

【摘要】 利用Nd∶YAG脉冲激光器(波长:1064nm)作为激发光源,以高分辨率、宽光谱段的中阶梯光栅光谱仪和ICCD为谱线分离与探测器件,在石墨富集的方式下测量并分析了水中铜元素的激光诱导击穿光谱特性。实验中以铜的324.754nm特征谱线作为分析线,研究了水中铜元素的时间衰减特性,确定了最佳延迟测量时间为1100ns,最佳门宽为2100ns,通过对不同铜浓度样品的测量,给出了铜元素的定标曲线,并计算得到铜元素的检测限约为0.0672 mg/l,研究结果为进一步实现水中痕量金属元素的快速检测提供了数据参考。更多还原

【Abstract】 The spectroscopy emission characteristics of trace heavy metal copper in water enriched with graphite is studied based on laser induced breakdown spectroscopy technique,with a 1064nm wavelength Nd:YAG laser as excitation source,the echelle spectrometer and ICCD detector are used for spectral separation and high sensitive detection with high resolution and wide spectral range.The characteristic spectral line of 324.754 nm with detection delay time 1100ns is selected for copper in the experiment.The calibration curve of Cu is plotted based on the different concentration measurement results,and the limit of detection with 0.0672 mg /l is obtained for Cu in water.The reference data is provided for further study the fast measurement of trace heavy metals in water by laser induced breakdown spectroscopy technique.更多还原