The Analysis of Distribution of Trace Elements in Apples by Laser-Induced Breakdown Spectroscopy

Author(s):  
Xu Zhang ◽  
Mingyin Yao ◽  
Muhua Liu ◽  
Zejian Lei
Author(s):  
Qiuyun Wang ◽  
Ting Ge ◽  
Yitong Liu ◽  
Luyun Jiang ◽  
Anmin Chen ◽  
...  

By combining surface-enhanced and discharge-assisted laser-induced breakdown spectroscopy (LIBS), the study successfully realized the quantitative analysis of trace heavy metal Cr, Cu, and Pb in aqueous solutions. We used an...


2018 ◽  
Vol 72 (8) ◽  
pp. 1183-1188 ◽  
Author(s):  
Hongbo Fu ◽  
Huadong Wang ◽  
Junwei Jia ◽  
Zhibo Ni ◽  
Fengzhong Dong

Due to the influence of self-absorption of major elements, scarce observable spectral lines of trace elements, and relative efficiency correction of experimental system, accurate quantitative analysis with calibration-free laser-induced breakdown spectroscopy (CF-LIBS) is in fact not easy. In order to overcome these difficulties, standard reference line (SRL) combined with one-point calibration (OPC) is used to analyze six elements in three stainless-steel and five heat-resistant steel samples. The Stark broadening and Saha-Boltzmann plot of Fe are used to calculate the electron density and the plasma temperature, respectively. In the present work, we tested the original SRL method, the SRL with the OPC method, and intercept with the OPC method. The final calculation results show that the latter two methods can effectively improve the overall accuracy of quantitative analysis and the detection limits of trace elements.


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