Elemental mapping and geochemical characterization of gas producing shales by laser induced breakdown spectroscopy

Jain, Jinesh C.; Quarles, C. Derrick; Moore, Johnathan; Hartzler, Daniel A.; McIntyre, Dustin; Crandall, Dustin

doi:10.1016/j.sab.2018.09.010

Cited by 27 publications

(3 citation statements)

References 38 publications

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“…Determination of soil total carbon (TC), total nitrogen (TN) and total phosphorus (TP): Determined by using j200 laser elemental analyzer [15]. Elemental analysis mainly includes Axiom software operation and Data analysis data analysis software operation.…”

Section: Experimental Area and Designmentioning

confidence: 99%

Nitrogen Deposition May Benefit to Larix olgensis Root Soils

Zhao

et al. 2023

Forests

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Atmospheric nitrogen deposition affects the health of forest ecosystems by altering soil microbial activity. However, the effects of nitrogen addition levels, morphology and ecosystem type on whether nitrogen addition is beneficial or detrimental to soil health is controver-sial, and most studies have focused on the negative effects on microbial structure. Based on this, this study conducted a four-year experiment of nitrogen (NaNO3) addition at two levels (10 and 20 kg N hm−2·yr−1) in the understory soil of Larix olgensis in northeastern China to study soil microbial properties, soil enzyme activities, and to analyze soil physi-cochemical properties and the correlation between them. The results showed that nitrogen addition reduced soil pH and increased soil NH4+-N and NO3−-N contents, thus promoting the activities of Urease (Ure), Acid phosphatase (ACP) and N-Acetamidoglucosidase (NAG) and inhibiting the activity of Leucine aminopeptidase (LAP) in soil, further improving the diversity and richness of soil microorganisms and increasing the dominant taxa of beneficial microorganisms. This may be due to soil acidification caused by the addition of nitrogen, which increases the effectiveness of nitrogen in the soil, improving soil properties, moving soil health in a beneficial direction, promoting beneficial microbial activity, and making the soil more suitable for the growth of the acid-loving tree species L. olgensis. In general, N addition favored the development of soil bacterial communities and the maintenance of soil nutrient status, and had a positive effect on the soil nutrient status of L. olgensis. The results of this study may provide an important scientific basis for adaptive management of forest ecosystems in the context of global nitrogen deposition.

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Section: Experimental Area and Designmentioning

confidence: 99%

Nitrogen Deposition May Benefit to Larix olgensis Root Soils

Zhao

et al. 2023

Forests

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“…It integrates electronics, the laser source, the spectrometer and the ablation chamber, which can host samples up to 200 × 100 mm 2 in a single box. For this study, the pulsed laser source was emitting at 1,064 nm, at a repetition rate of 1,000 Hz and delivered up to 500 µJ/pulse, which is orders of magnitudes faster than other studies employing LIBS (Fabre et al, ; Jain et al, ; Streubel et al, ). The ablation chamber capture particles using a vacuum nozzle and a HEPA filter.…”

Section: Methodsmentioning

confidence: 99%

Compositional tomography of a gold‐bearing sample by Laser‐induced breakdown spectroscopy

Gervais

Rifaï²,

Plamondon

et al. 2019

Terra Nova

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This contribution presents the first results of compositional tomography of a geological sample. The volume render of 6 × 8 × 1 mm 3 was constructed by assembling 63 compositional maps acquired in 21 min (19.5 s/layer) by laser-induced breakdown spectroscopy (LIBS), which determines the chemical composition of the analysed spot from the light emitted by a plasma produced by the laser. This technique is, therefore, able to directly reveal the 3D distribution of chemical elements in a sample. As an example, the spatial distribution and 3D geometry of visible gold in an ultramafic schist are presented. Inasmuch as this newly developed portable LIBS instrument is able to the rapidly characterize the 3D geometry of any geological materials, it has a high potential to be useful for the mining industry and for a wide range of geosciences, such as structural geology, petrology, sedimentology and economic geology.

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“…2 Other applications are focused on hydrogen determination in oil shales and associated rocks (limestone or mudrock), 16,17 as well as in gas producing shales. 18 Such determination is also important for the investigation of the past evolution of Mars. 19 Hydrogen is one of the most focused elements to be detected and analyzed in geological materials encountered by the rovers on Mars, since it reveals the hydration states of Martian geological materials which can be of different origins, including adsorption from atmospheric H 2 O, hydrated crystalline minerals, and amorphous or poorly crystalline hydrated phases.…”

Section: Introductionmentioning

confidence: 99%

Accurate determination of structural H₂O in rocks using LIBS coupled with machine learning algorithms extensively exploring the characteristics of the H_α line

Sun

Zhang

et al. 2022

J. Anal. At. Spectrom.

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Elemental mapping and geochemical characterization of gas producing shales by laser induced breakdown spectroscopy

Cited by 27 publications

References 38 publications

Nitrogen Deposition May Benefit to Larix olgensis Root Soils

Nitrogen Deposition May Benefit to Larix olgensis Root Soils

Compositional tomography of a gold‐bearing sample by Laser‐induced breakdown spectroscopy

Accurate determination of structural H₂O in rocks using LIBS coupled with machine learning algorithms extensively exploring the characteristics of the H_α line

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Elemental mapping and geochemical characterization of gas producing shales by laser induced breakdown spectroscopy

Cited by 27 publications

References 38 publications

Nitrogen Deposition May Benefit to Larix olgensis Root Soils

Nitrogen Deposition May Benefit to Larix olgensis Root Soils

Compositional tomography of a gold‐bearing sample by Laser‐induced breakdown spectroscopy

Accurate determination of structural H2O in rocks using LIBS coupled with machine learning algorithms extensively exploring the characteristics of the Hα line

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Product

Resources

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Accurate determination of structural H₂O in rocks using LIBS coupled with machine learning algorithms extensively exploring the characteristics of the H_α line