Abstract：The spectroscopy emission characteristics and the detection limit of trace heavy metal nickel in water was studied based on laser induced breakdown spectroscopy technique, with a 1 064 nm wavelength Nd∶YAG laser as excitation source, and the echelle spectrometer and ICCD detector were used for spectral separation and high sensitive detection with high resolution and wide spectral range. A round flat solid state graphite as matrix was used for element enrichment for reducing water splashing, extending the plasma lifetime and improving the detection sensitivity, and the experimental sample was prepared by titrating a fixed volume of nickel nitrate solution of different concentrations on a fixed area of the graphite matrix. The results show that the better detection delay time is about 700 ns, the spectrum intensity raises with the concentration increase, a good linear relationship is presented at low concentration with a correlation coefficient 0.996 1, and the lower limit of detection of nickel in water with 0.28 mg·L-1 was retrieved. A measurement method for further study of trace heavy metals in water is provided with laser induced breakdown spectroscopy technique.
石 焕，赵南京*，王春龙，鲁翠萍，刘立拓，陈 东，马明俊，张玉钧，刘建国，刘文清 . 水体痕量重金属Ni的激光诱导击穿光谱测量研究[J]. 光谱学与光谱分析, 2012, 32(01): 25-28.
SHI Huan, ZHAO Nan-jing*, WANG Chun-long, LU Cui-ping, LIU Li-tuo, CHEN Dong, MA Ming-jun, ZHANG Yu-jun, LIU Jian-guo, LIU Wen-qing . Study on Measurement of Trace Heavy Metal Ni in Water by Laser Induced Breakdown Spectroscopy Technique . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2012, 32(01): 25-28.
[1] Kang S X, Sun X, Ju X, et al. Nuclear Instruments and Methods in Physics Research Section B: Interaction with Materials and Atoms, 2002, 192(4): 365. [2] Rawat M，Moturi M C Z, Subramanian V. Journal of Environmental Monitoring(JEM), 2003，5(6)：906. [3] Rios-Arana J V，Walsh E J, Gardea-Torresdey J L. Environment International，2004，29(7)：957. [4] Ritschel A，Wobrauschek P，Chinea E，et al. Spectrochim. Acta Part B，1999，54：1449. [5] Ugo P，Zampieri S，Moretto L M. Anal. Chim. Acta, 2001，434：291. [6] Sitko R，Zawisza B, Mzyk Z. Journal of Analytical Atomic Spectromtry，2006，21：13. [7] McComb M E, Gesser H D. Anal. Chim. Acta，1997，341：229. [8] Lee K H，Oshima M, Motomizu S. Analyst，2002，127：769. [9] Batterham G J，Munksgaard N C, Parry D L. J. Anal. At. Spectrom.，1997，12：1277. [10] Tanaka T，Ando Y，Saitoh T，et al. J. Anal. At. Spectrom.，2002，17：1556. [11] ZHAO Fang, ZHANG Qian, XIONG Wei, et al(赵 芳，张 谦，熊 威，等). Environmental Science and Technology(环境科学与技术)，2010, 33(3): 137. [12] ZHANG Qian, XIONG Wei, ZHAO Fang, et al(张 谦，熊 威，赵 芳，等). Environmental Science and Technology(环境科学与技术)，2009, 33(B12): 98. [13] St-Onge L. Spectrochimica Acta Part B, Atomic. Spectroscopy, 2002, 57(7): 1131. [14] CHANG Liang, LIN Zhao-xiang, et al(常 亮，林兆祥, 等). High Power Laser and Particle Beams(强激光与粒子束)，2010，22(6): 1369.
