Zhu Dehua, Wu Lizhi, Wang Bin, Chen Jianping, Lu Jian, Ni Xiaowu
School of Science, Nanjing University of Science and Technology, Nanjing 210094, China.
Appl Opt. 2011 Oct 10;50(29):5695-9. doi: 10.1364/AO.50.005695.
Laser-induced breakdown spectroscopy has been performed to detect trace metal elements (Ca and Mg) in aqueous solution. In order to overcome the sensitivity drawbacks in liquid sample analysis, an absorbent paper was used as the sample support in this experiment. Calibration curves were constructed by using the standard solution with variable concentration and the limit of detection was estimated for each element. Finally this system was used to analyze three types of water samples collected from different locations in Nanjing, China and the results were compared with inductively coupled plasma atomic emission spectroscopy and showed good correlation.
已进行激光诱导击穿光谱分析以检测水溶液中的痕量金属元素（钙和镁）。为了克服液体样品分析中的灵敏度缺陷，本实验使用吸水纸作为样品载体。通过使用不同浓度的标准溶液构建校准曲线，并估算每种元素的检测限。最后，该系统用于分析从中国南京不同地点采集的三种水样，并将结果与电感耦合等离子体原子发射光谱法进行比较，显示出良好的相关性。
