Click on “Download PDF” for the PDF version or on the title for the HTML version.


If you are not an ASABE member or if your employer has not arranged for access to the full-text, Click here for options.

Signal Enhancement in Collinear Double-pulse Laser-induced Breakdown Spectroscopy Applied to the Soils of Magnesium Element

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  2017 ASABE Annual International Meeting  1700916.(doi:10.13031/aim.201700916)
Authors:   Yangyang Lv, Fei Liu, Xiaodan Liu, Yidan Bao, Jiyu Peng, Yong He
Keywords:   Soil; Collinear double-pulse laser-induced breakdown spectroscopy; Magnesium element; Parameter optimization;

Abstract. As one of the most important natural resources for human survival, soil is the basis and fundamental of agricultural production Soil nutrients are divided into a large number of elements, middle elements and trace elements, which play a vital role in the growth of plants, no matter more or less.

In this study, magnesium elements were used as the object of study, and the wavelengths of the three elements (516.73nm, 517.27nm and 518.36nm) were compared and analyzed from the two angles of single pulse and collinear double pulse. Firstly, the parameters of single and double pulse are optimized according to the signal intensity, signal-to-noise ratio (SNR) and the relative standard deviation (RSD). The optimal delay time of single pulse is 6us, the pulse energy is 100mJ, and the optimal delay time is 2us, the first pulse energy is 20mJ, the second pulse energy is 80mJ, the two pulse interval is 1200ns.

Using the optimal parameters analyzed before, the results show that the signal intensity and signal-to-noise ratio of the three wavelengths of the magnesium element are about twice as high as the single pulse, and the relative standard deviation is reduced to the original 0.6-0.7 times. The effect of collinear double pulse on the optimization of magnesium elements in soil was obvious, which laid a good foundation for the subsequent analysis and qualitative and quantitative analysis of other elements in soil.

(Download PDF)    (Export to EndNotes)

 

Authors, please use the Guide for Authors when creating your articles.

Public Access Information
 Public Access = Public Access (PA)
 Public Access Limited Time = PA Limited Time
 Open Access = Open Access
 Contact Us For Purchase = Contact Us For Purchase