Background and background correction in analytical atomic spectrometry. Part 1. Emission spectrometry. A tutorial review

Dawson, J. B.; Snook, Richard D.; Price, W. J.

doi:10.1039/ja9930800517

Cited by 26 publications

(6 citation statements)

References 93 publications

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“…The second method estimates a baseline for each peak independently through a linear fit of the points on the left and right sides. It depends on the fact that the baseline approaches a straight line for small spectral regions and considers only spectral points not belonging to peaks (Dawson et al, 1993).…”

Section: Spectral Processingmentioning

confidence: 99%

Laser-induced breakdown spectroscopy to determine soil texture: A fast analytical technique

et al. 2016

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The analysis of soil texture is crucial for the proper management of agricultural systems and for environmental studies. Soil texture is important as it affects erosion potential, water retention capacity, organic matter complexation, and the retention of nutrients, among others. It is usually determined by pipette or hydrometer methods, but analysis requires a preparation with chemical reagents, which can take hours and hence is unfeasible for large number of samples. Here we propose the use of laser-induced breakdown spectroscopy (LIBS) to estimate the proportions of sand, silt, and clay in 60 Brazilian soil samples of varying composition. Two calibration models were developed with the partial least square regression method: one considering the spectral region from 188 to 980 nm and the other, emission lines of the elements Si, Na, Fe, Ti, Ca, K, Al, Co, Mg, V, Ba, and Be. The Pearson correlation coefficients for the estimated values were 0.89 and 0.90 on average for the first and second models, respectively. The uncertainties were 6% on average for both models. These results demonstrate the use of LIBS for rapid scanning of the texture of soil samples with distinct composition. The procedure presented here can be extended to other chemical and physical soil properties, which makes LIBS a universal tool for rapid soil analysis without preparation with chemical reagents.

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Section: Spectral Processingmentioning

confidence: 99%

Laser-induced breakdown spectroscopy to determine soil texture: A fast analytical technique

et al. 2016

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“…The most sensitive lines in MIP-OES cover a wide range of UV and Visible (Vis) wavelengths, 1 while in ICP-OES, the majority of the intense emission lines are in the UV range. 9,11,[15][16][17] The Ar-ICP is an efficient excitation source, and its emission spectrum is considerably more complex (with a larger number and more intense emission lines) than that observed for N 2 -MIP-OES. 1,3,11,16,17 See, for example, the Mo spectra recorded in MIP-OES and ICP-OES (Fig.…”

Section: Microwave-induced Plasma (Mip) and Inductively Coupled Plasm...mentioning

confidence: 99%

Is MIP-OES a suitable alternative to ICP-OES for trace element analysis?

Fontoura

Jofré

Williams

et al. 2022

J. Anal. At. Spectrom.

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“…The baseline can be corrected either locally for just a couple of peaks or for a broad spectral range. In the first case, the most common approach is to fit a straight line to the points on the sides of one or more peaks, a method that is known as "correction of three points" (Dawson, Snook, & Price, 1993). In the second case, an algorithm (e.g., Liland, 2015;Liland, Almøy, & Mevik, 2010;Liland & Mevik, 2011) fits a smooth curve to the baseline points that are in regions free of well-defined peaks.…”

Section: Quantitative Analysismentioning

confidence: 99%

Applications of laser‐induced breakdown spectroscopy for soil analysis, part I: Review of fundamentals and chemical and physical properties

Boas

Franco

Martin‐Neto

et al. 2019

European J Soil Science

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Laser‐induced breakdown spectroscopy (LIBS) has become a prominent analytical technique in recent years for real‐time characterization of soil properties. However, only a few studies of soil chemical and physical properties have been reported using LIBS until recently. The aims of this article are to: (a) provide the basic principles of LIBS for soil analysis and (b) present the use of LIBS for the analysis of soil pH, soil texture and the humification degree of soil organic matter (SOM). The second article will cover soil classification and soil elemental analysis, including plant nutrients, carbon (C) and toxic elements. LIBS is a multi‐element analytical technique based on atomic spectroscopy that employs a high‐energy laser pulse focused onto a sample surface to create a transient plasma. It is a spectroscopic analytical technique that requires very little or no sample preparation, examines each sample in seconds, and offers a flexible platform for the examination of a broad array of elements in the sample. LIBS also can be used to infer soil chemical and physical properties if a relationship exists between the chemical composition and the soil properties. With proper calibration, LIBS has a great potential for real‐time in‐field soil analysis and precision farming that could lead to improved soil management and agricultural production, and reduced agricultural environmental impacts. Highlights Laser‐induced breakdown spectroscopy (LIBS) is a fast, multi‐element analytical technique with great potential for soil characterization. Basic principles of LIBS and general description of its use for soil analysis are provided. Soil chemical and physical characterization by LIBS are reviewed and compared to other techniques. LIBS advantages, limitations and challenges are discussed for soil chemical and physical characterization.

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Background and background correction in analytical atomic spectrometry. Part 1. Emission spectrometry. A tutorial review

Cited by 26 publications

References 93 publications

Laser-induced breakdown spectroscopy to determine soil texture: A fast analytical technique

Laser-induced breakdown spectroscopy to determine soil texture: A fast analytical technique

Is MIP-OES a suitable alternative to ICP-OES for trace element analysis?

Applications of laser‐induced breakdown spectroscopy for soil analysis, part I: Review of fundamentals and chemical and physical properties

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