Ring-Oven Based Preconcentration Technique for Microanalysis: Simultaneous Determination of Na, Fe, and Cu in Fuel Ethanol by Laser Induced Breakdown Spectroscopy

2013 ◽  
Vol 85 (3) ◽  
pp. 1547-1554 ◽  
Author(s):  
Juliana Cortez ◽  
Celio Pasquini
Keyword(s):  
Simultaneous Determination ◽  
Fuel Ethanol ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Ring Oven ◽  
Laser Induced Breakdown ◽  
Preconcentration Technique

scholarly journals Fast and Simultaneous Determination of Soil Properties Using Laser-Induced Breakdown Spectroscopy (LIBS): A Case Study of Typical Farmland Soils in China

Soil Systems ◽  
2019 ◽  
Vol 3 (4) ◽  
pp. 66 ◽  
Author(s):  
Xuebin Xu ◽  
Changwen Du ◽  
Fei Ma ◽  
Yazhen Shen ◽  
Jianmin Zhou
Keyword(s):  
Soil Properties ◽  
Simultaneous Determination ◽  
Laser Induced Breakdown Spectroscopy ◽  
Promising Alternative ◽  
Breakdown Spectroscopy ◽  
Characteristic Lines ◽  
Wide Range ◽  
Farmland Soils ◽  
Laser Induced Breakdown

Accurate management of soil nutrients and fast and simultaneous acquisition of soil properties are crucial in the development of sustainable agriculture. However, the conventional methods of soil analysis are generally labor-intensive, environmentally unfriendly, as well as time- and cost-consuming. Laser-induced breakdown spectroscopy (LIBS) is a “superstar” technique that has yielded outstanding results in the elemental analysis of a wide range of materials. However, its application for analysis of farmland soil faces the challenges of matrix effects, lack of large-scale soil samples with distinct origin and nature, and problems with simultaneous determination of multiple soil properties. Therefore, LIBS technique, in combination with partial least squares regression (PLSR), was applied to simultaneously determinate soil pH, cation exchange capacity (CEC), soil organic matter (SOM), total nitrogen (TN), total phosphorus (TP), total potassium (TK), available phosphorus (AP), and available potassium (AK) in 200 soils from different farmlands in China. The prediction performances of full spectra and characteristic lines were evaluated and compared. Based on full spectra, the estimates of pH, CEC, SOM, TN, and TK achieved excellent prediction abilities with the residual prediction deviation (RPDV) values > 2.0 and the estimate of TP featured good performance with RPDV value of 1.993. However, using characteristic lines only improved the predicted accuracy of SOM, but reduced the prediction accuracies of TN, TP, and TK. In addition, soil AP and AK were predicted poorly with RPDV values of < 1.4 based on both full spectra and characteristic lines. The weak correlations between conventionally analyzed soil AP and AK and soil LIBS spectra are responsible for the poor prediction abilities of AP and AK contents. Findings from this study demonstrated that the LIBS technique combined with multivariate methods is a promising alternative for fast and simultaneous detection of some properties (i.e., pH and CEC) and nutrient contents (i.e., SOM, TN, TP, and TK) in farmland soils because of the extraordinary prediction performances achieved for these attributes.

Mechanization of measurement of laser induced breakdown spectroscopy/ring-oven pre-concentration: determination of copper in cachaça

2016 ◽  
Vol 8 (40) ◽  
pp. 7354-7360 ◽  
Author(s):  
Celio Pasquini ◽  
Benedito B. Farias Filho
Keyword(s):  
Internal Standard ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Concentration Determination ◽  
Concentration Technique ◽  
Ring Oven ◽  
Laser Induced Breakdown ◽  
Sensing Characteristics ◽  
Determination Of Copper

The hyphenation of the micro-analytical sensing characteristics of LIBS with the ring-oven pre-concentration technique is improved through mechanization of the ring measurement and use of lithium as internal standard.

Determination of Ca addition to the wheat flour by using laser-induced breakdown spectroscopy (LIBS)

2016 ◽  
Vol 242 (10) ◽  
pp. 1685-1692 ◽  
Author(s):  
Gonca Bilge ◽  
Banu Sezer ◽  
Kemal Efe Eseller ◽  
Halil Berberoğlu ◽  
Hamit Köksel ◽  
...  
Keyword(s):  
Wheat Flour ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Ca Addition ◽  
Laser Induced Breakdown

Quantitative determination of calcium, magnesium, and zinc in fingernails by laser-induced breakdown spectroscopy

Talanta ◽  
2013 ◽  
Vol 117 ◽  
pp. 55-59 ◽  
Author(s):  
David A. Rusak ◽  
Ann E. Zeleniak ◽  
Jillian L. Obuhosky ◽  
Scott M. Holdren ◽  
Craig A. Noldy
Keyword(s):  
Quantitative Determination ◽  
Laser Induced Breakdown Spectroscopy ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
Calcium Magnesium

Fast determination of calcium concentration in the internal tissues of a single seed using laser-induced breakdown spectroscopy

2016 ◽  
Vol 8 (37) ◽  
pp. 6705-6710 ◽  
Author(s):  
Pengcheng Han ◽  
Daming Dong ◽  
Xiaofan Du ◽  
Leizi Jiao ◽  
Xiande Zhao
Keyword(s):  
High Precision ◽  
Calcium Concentration ◽  
Seed Vigor ◽  
Laser Induced Breakdown Spectroscopy ◽  
Fast Determination ◽  
Breakdown Spectroscopy ◽  
Single Seed ◽  
Small Influence ◽  
Laser Induced Breakdown

Laser-induced breakdown spectroscopy was used for the fast determination of calcium concentration in the internal tissues of a single seed. Compared with conventional methods, LIBS had obvious advantages, such as a little analysis spot, little ablation, high precision, and small influence on the seed vigor.

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