ANALYSIS OF PHOSPHORUS IN FERTILIZER USING LASER-INDUCED BREAKDOWN SPECTROSCOPY
Abstract
Laser-induced breakdown spectroscopy (LIBS) has been applied to measure spectral characteristics and for a quantitative analysis of the concentration of phosphorus (P) in compound fertilizer, an issue of great concern for the fertilizer industry. For analysis using LIBS, fertilizer samples were compressed into pellets and a pulsed Nd:YAG laser was employed to produce the plasma in air and argon (Ar) atmospheres. Using this approach, we analyzed the time evolution characteristics of the P analytical line in air and Ar atmospheres. Calibration curves were constructed for measurements under air and Ar atmospheres using reference fertilizer samples collected from fertilizer production enterprises. The measurement accuracy and detection limit of P by LIBS was improved under Ar atmosphere relative to air atmosphere. This study de-monstrated that the LIBS method can be used for analyzing the concentration of P in practical applications.
About the Authors
W. . Sha
School of Electric Engineering and Automation, Anhui University
Russian Federation
Russian Federation
P. . Niu
School of Electric Engineering and Automation, Anhui University
Russian Federation
Russian Federation
C. . Zhen
School of Computer Science and Technology, Anhui University
Russian Federation
Russian Federation
C. . Lu
Institute of Intelligent Machines, Chinese Academy of Sciences
Russian Federation
Russian Federation
Y. . Jiang
School of Electric Engineering and Automation, Anhui University
Russian Federation
Russian Federation
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Review
For citations:
Sha W., Niu P., Zhen C., Lu C., Jiang Y. ANALYSIS OF PHOSPHORUS IN FERTILIZER USING LASER-INDUCED BREAKDOWN SPECTROSCOPY. Zhurnal Prikladnoii Spektroskopii. 2018;85(4):600-605. (In Russ.)
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