Optical Structure Design of Handheld Soil Heavy Metal Detector Based on LIBS

Yin, 王寅 Wang; Nanjing, 赵南京 Zhao; Mingjun, 马明俊 Ma; Chunlong, 王春龙 Wang; Yang, 余洋 Yu; Deshuo, 孟德硕 Meng; Dahai, 张大海 Zhang; Li, 胡丽 Hu; Yujun, 张玉钧 Zhang; Jianguo, 刘建国 Liu; Wenqing, 刘文清 Liu

doi:10.3788/al20133303.327

应用激光

2013

DOI: 10.3788/al20133303.327

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Optical Structure Design of Handheld Soil Heavy Metal Detector Based on LIBS

王寅 Wang Yin¹,

赵南京 Zhao Nanjing²,

马明俊 Ma Mingjun³

et al.

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Detection of heavy metals in water samples by laser-induced breakdown spectroscopy combined with annular groove graphite flakes

Zhao

2018

Plasma Sci. Technol.

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The use of laser-induced breakdown spectroscopy (LIBS) for the analysis of heavy metals in water samples is investigated. Some factors such as splashing, surface ripples, extinction of emitted intensity, and a shorter plasma lifetime will influence the results if the water sample is directly measured. In order to avoid these disadvantages and the 'coffee-ring effect', hydrophilic graphite flakes with annular grooves were used for the first time to enrich and concentrate heavy metals in water samples before being analyzed by LIBS. The proposed method and procedure have been evaluated to concentrate and analyze cadmium, chromium, copper, nickel, lead, and zinc in a water sample. The correlation coefficients were all above 0.99. The detection limits of 0.029, 0.087, 0.012, 0.083, 0.125, and 0.049 mg l −1 for Cd, Cr, Cu, Ni, Pb, and Zn, respectively, were obtained in samples prepared in a laboratory. With this structure, the heavy metals homogeneously distribute in the annular groove and the relative standard deviations are all below 6%. This method is very convenient and suitable for online in situ analysis of heavy metals.

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Detection of heavy metals in water samples by laser-induced breakdown spectroscopy combined with annular groove graphite flakes

Zhao

2018

Plasma Sci. Technol.

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show abstract

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Optical Structure Design of Handheld Soil Heavy Metal Detector Based on LIBS

Cited by 1 publication

References 0 publications

Detection of heavy metals in water samples by laser-induced breakdown spectroscopy combined with annular groove graphite flakes

Detection of heavy metals in water samples by laser-induced breakdown spectroscopy combined with annular groove graphite flakes

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