Figure 2 Multivariate standard curve of C element Hand Liquid Soap,Hand Soap,Hand Sanitizer Gel,Aloe Hand Soap Wuxi Keni Daily Cosmetics Co.,Ltd , https://www.wxkenidaily.com
When the laser acts on the sample, a plasma containing the sample material is induced in a very short time. During the plasma generation, an emission spectrum with information of the sample element is emitted, and by detecting these emission spectra, the sample element content information is obtained. . This technology is called Laser Induced Breakdown Spectroscopy (LIBS), commonly known as laser spectral elemental analysis technology, and the detection limit can reach ppm level. With the cooling of plasma, the condensed sample particles can be transported to ICP- MS, can measure traces, trace elements or isotopes in samples, detection limit up to ppb level. The measured elements cover most of the elements in the periodic table, up to more than 100. 
1 , Analysis of soil sample constants and trace elements 
Application of J200 Laser Mass Spectrometer Elemental Analyzer in Soil Element Analysis
Application of J200 Laser Mass Spectrometer Elemental Analyzer in Soil Element Analysis
- Green chemical analysis technology from Lawrence Berkeley National Laboratory
technical background
The J200 Laser Mass Spectrometer Elemental Analyzer is the world's top product from the ASI company's more than 30 years of research in the basic theory of laser chemistry analysis at Lawrence Berkeley National Laboratory. ASI was founded by Dr. Rick Russo, a senior scientist at the Lawrence Berkeley National Laboratory in the United States, and his team. Dr. Russo 's research areas include: laser heating and laser ablation process mechanism research; femtosecond laser injection system; laser ablation technology to improve LIBS (laser induced breakdown spectroscopy) and ICP-MS chemical analysis accuracy; laser ultrasonic non-destructive testing And evaluation, etc. Dr. Russo has published more than 300 academic papers and 22 patents. ASI has world-leading technology and experience in laser applications.
system introduction
The J200 laser mass spectrometer elemental analyzer has created a new era of laser plasma spectrochemical analysis technology. For the first time, LIBS technology and ICP-MS are combined to increase the detection limit to ppb level. The in-situ detection can obtain the distribution of sample elements. (elements mapping). It has been widely used in international high-end and national laboratories, such as the Lawrence Berkeley National Laboratory, the United States Grand Clamandan Crime Laboratory, the University of Sao Paulo, Brazil, and the Pacific Northwest National Laboratory.
J200 laser trace element distribution analyzer
J200 laser mass spectrometry elemental analyzer based on laser-induced breakdown spectroscopy technology, the measurement of almost all elements from hydrogen to antimony, including H, N, O and other light elements and other traditional methods such as halogen (including ICP- MS) Elements that cannot be measured. In addition, the laser ablation function of the J200 laser mass spectrometer combined with the elemental analyzer can also achieve solid direct injection, and the denatured nano-scale solid sample particles are sent to ICP-MS for more accurate analysis, effectively avoiding acid dissolution, digestion and other complexities. The secondary pollution caused by sample pretreatment and the introduction of possible errors, while greatly improving the element detection limit, achieve a wide range of measurements from below ppb to 100%.
Applications
Nine soil standard samples from different sources were pre-pressed and analyzed by ASI's J200 laser mass spectrometer with elemental analyzer. Peaks in the spectrogram were identified and labeled using ASI's specialized analysis software package. The focus of this case is on the macroelements (P, Ca, Mg, K) and trace elements (C, B, Cu, Fe, Mn, Mo, Zn) in the soil.
The laser ablation sampling points on each soil standard sample are 5 x 5 grids (ie, 25 sampling points). The principal component analysis function (PCA) included in the analysis software package was used for analysis, and the accuracy of the analysis results and the ability to discriminate the sample type were evaluated. Figure 1 is a graph showing the results of three-dimensional analysis of PCA of nine soil standard samples. Among the 9 standard samples analyzed, the analysis results of 25 sampling points of each of samples 25, 27, and 28 were more compact in the PCA three-dimensional map than the other samples, indicating the analysis results of the three samples. More accurate (ie, the analysis results of 25 sampling points are less different). The analysis results of the nine standard samples showed a good separation state on the PCA three-dimensional map, which indicates that the analysis results can well judge that the nine samples are different types (source) of soil samples. A multivariate standard curve for the C element was established using ASI's data analysis software package. Figure 2 is a multivariate standard curve of the C element established using a soil standard sample.
Figure 1 Principal component analysis of 9 soil standard sample data
( PCA ) 3D map
The accuracy and accuracy of the analysis were evaluated by using the established standard curve to test another soil standard sample (the standard sample being tested was not used to establish a standard curve). Table 1 shows the accuracy and precision of the No. 21 standard soil sample tested.
Table 1. Accuracy and accuracy of standard soil sample No. 21 for multivariate standard curve testing
Partial reference  Welcome to call for a catalogue before 2012.
• Chirinos, JR, Oropeza, DD, Gonzalez, J., Hou, H., Morey, M., Zorba, V., & Russo, RE (2014). Simultaneous 3-Dimensional Elemental Imaging with LIBS and LA-ICP- MS. Journal of Analytical Atomic Spectrometry. doi:10.1039/c4ja00066h
• Choi, SH, Kim, JS, Lee, JY, Jeon, JS, Kim, JW, Russo, RE, et al. (2014). Analysis of arsenic in rice grains using ICP-MS and fs LA-ICP-MS. Journal of Analytical Atomic Spectrometry, 29(7), 1233–1237. doi:10.1039/C4JA00069B
• Quarles, CD, Gonzalez, JJ, East, LJ, Yoo, JH, Morey, M., & Russo, RE (2014a). Fluorine analysis using Laser Induced Breakdown Spectroscopy (LIBS). Journal of Analytical Atomic Spectrometry, 29(7 ), 1238–1242. doi:10.1039/C4JA00061G
• Quarles, CD, Gonzalez, J., East, LJ, Yoo, JH, Morey, M., & Russo, RE (2014b). Fluorine analysis using Laser Induced Breakdown Spectroscopy (LIBS). Journal of Analytical Atomic Spectrometry. 10.1039/c4ja00061g
• Dong, M., Mao, XL, Gonzalez, J., Lu, J., & Russo, RE (2013). Carbon Isotope Separation and Molecular Formation in Laser-Induced Plasmas by Laser Ablation Molecular Isotopic Spectrometry. Atomic Spectroscopy. :10.1021/ac303524d
• Harmon, RS, Russo, RE, & Hark, RR (2013). GEOLIBS–A Review of the Application of Laser-Induced Breakdown Spectroscopy for Geochemical and Environmental Analysis. Spectrochimica Acta Part B: Atomic Spectroscopy. doi:10.1016/j. Sab.2013.05.017
• Piscitelli, V., Gonzalez, J., Mao, XL, Fernandez, A., & Russo, RE (2013). Micro-Crater Laser Induced Breakdown Spectroscopy-an Analytical approach in metals samples.
• Russo, RE, Mao, XL, Gonzalez, J., Zorba, V., & Yoo, JH (2013b). Laser Ablation in Analytical Chemistry. Atomic Spectroscopy.
• Zorba, V., X. Mao and RE Russo. Ultrafast Laser Induced Breakdown Spectroscopy for high spatial resolution chemical analysis, Spectrochimica Acta B-Atomic Spectroscopy, Vol 66, Issue 2, pp. 189-192 (2011).
• Dong, Meirong, Xianglei Mao, Jhanis Gonzalez, Jidong Lu, and Richard E Russo. 2012. “Time-Resolved LIBS of Atomic and Molecular Carbon From Coal in Air, Argon and Helium.†Journal of Analytical Atomic Spectrometry.