Determination of Ag, Cu, Mo and Pb in soils and ores by laser-induced breakdown spectrometry

Popov, A. M.; Лабутин, Т.А.; Seliverstova, Irina V.; Зоров, Н. Б.; Kalko, I.A.; Sidorina, Yulia N.; Бугаев, И. А.; Nikolaev, Y.N.

doi:10.1039/c4ja00199k

Cited by 39 publications

(19 citation statements)

References 25 publications

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“…There is the additional feature that LIBS sampling is highly spatially resolved, as the plasma forms over a limited spatial area of only tens to hundreds of microns on the sample surface, so that only a small amount of material (typically picograms to nanograms) is sampled by each laser pulse. This allows for in situ analysis of individual particles, mineral grains, or inclusions [33,[37][38][39][40][41], as well as the fine-scale compositional mapping of a complex sample such as a chemically zoned mineral [42][43][44][45][46][47], the analysis of thin crusts, coatings, or surface alteration zones without substrate interference [48], or chemical analysis at highly spatially resolved spatial scales to below~10 µm [47,[49][50][51][52][53][54]. Stratigraphic analysis of a sample by depth profiling is also possible, as sequential ablation forms a vertical crater that progressively bores down into a sample with successive laser pulses [55][56][57].…”

Section: Specific Attributes Of Libsmentioning

confidence: 99%

Laser-Induced Breakdown Spectroscopy—An Emerging Analytical Tool for Mineral Exploration

et al. 2019

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The mineral exploration industry requires new methods and tools to address the challenges of declining mineral reserves and increasing discovery costs. Laser-induced breakdown spectroscopy (LIBS) represents an emerging geochemical tool for mineral exploration that can provide rapid, in situ, compositional analysis and high-resolution imaging in both laboratory and field and settings. We demonstrate through a review of previously published research and our new results how LIBS can be applied to qualitative element detection for geochemical fingerprinting, sample classification, and discrimination, as well as quantitative geochemical analysis, rock characterization by grain size analysis, and in situ geochemical imaging. LIBS can detect elements with low atomic number (i.e., light elements), some of which are important pathfinder elements for mineral exploration and/or are classified as critical commodities for emerging green technologies. LIBS data can be acquired in situ, facilitating the interpretation of geochemical data in a mineralogical context, which is important for unraveling the complex geological history of most ore systems. LIBS technology is available as a handheld analyzer, thus providing a field capability to acquire low-cost geochemical analyses in real time. As a consequence, LIBS has wide potential to be utilized in mineral exploration, prospect evaluation, and deposit exploitation quality control. LIBS is ideally suited for field exploration programs that would benefit from rapid chemical analysis under ambient environmental conditions. Minerals 2019, 9, 718 2 of 45 government to search for additional mineral resources in green-field (i.e., remote) and brown-field (i.e., near mine) exploration environments [7][8][9]. However, the global trends of declining mineral reserves for many commodities and increasing discovery costs [3,4,10] suggest that exploration investment is insufficient and/or is not being deployed in the most effective manner possible. Both trends are also occurring at a time when new mineral deposit discoveries tend to be deeper, covered, and/or more remote, which are unlike near-surface mines that were often found, at least initially, by prospectors [4,[7][8][9]11].To address increasing demand and declining mineral reserves from deeper and more challenging deposits, the mineral exploration industry had to evolve and innovate by adopting new, cost-effective methodologies and technologies. For example, new conceptual models provide a predictive framework to identify the kinds of large-scale geological environments that should be considered the most prospective for finding additional mineral resources in greenfield areas of sparse geological data [12-15]. The ore system concept, which includes all of the geological processes required to transport and concentrate ore components from source to ore (i.e., drivers, sources, pathways, and traps), is one such predictive framework [12][13][14]16]. Because each of the required ore-forming components is manifested in the rock record as chan...

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Section: Specific Attributes Of Libsmentioning

confidence: 99%

Laser-Induced Breakdown Spectroscopy—An Emerging Analytical Tool for Mineral Exploration

et al. 2019

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“…а отношения ионов к атомам определяется по уравнению (6). Используя полученные значения температуры и электронной плотности для t = 2.5 µs для каждого образца, мы определили отношение Mn/Fe в 12 образцах ЖМК по уравнению (7).…”

Section: результатыunclassified

“…Лазерно-искровая эмиссионная спектрометрия (ЛИЭС) является одним из наиболее перспективных методов прямого экспресс-анализа твердых, жидких и газообразных образцов [1]: металлов [2], включая легкие сплавы [3], метеоритов [4], почв и руд [5,6], растительных образцов [7]. Применение экспрессных методов элементного анализа исключительно актуально для оптимизации процедуры поиска и отбора проб пелагических отложений во время морских экспедиций.…”

Section: Introductionunclassified

Определение отношения Mn/Fe в железомарганцевых конкрециях с помощью безэталонной лазерно-искровой эмиссионной спектроскопии

Ахметжанов¹,

Лабутин²,

Зайцев³

et al. 2019

Журнал Технической Физики

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The Mn/Fe ratio in ferromanganese nodules is determined by calibration-free laser-induced breakdown spectroscopy based on the use of only the plasma temperature and electron density and the intensities of manganese and iron analytical lines (Mn I at 447.28 and 447.93 nm and Fe I at 447.65 nm). The plasma temperature was determined by the two-line method (Mn I at 447.28 and 447.93 nm), while the plasma electron density was determined by the Stark broadening of the Mg I line at 517.26 nm. The study was performed using both standard samples (OOPE series) and samples of ferromanganese nodules sampled during expeditions to the Kara and Laptev Seas. The possibility of semiquantitative determination of the Mn/Fe ratio within the range from 0.2 to 4.2, which is enough for determining this ratio in most types of nodules of different geographical origins, is demonstrated. The calibration-free analysis data correlate with the results of inductively coupled plasma atomic emission analysis.

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“…Вблизи линии серебра Ag I 328.07 nm имеется ряд спектральных помех, усложняющих корректное определение ее интенсивности [10]. В частности, наблюдается ее частичное перекрывание с линией Fe I 328.03 nm.…”

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Ударное Сжатие Лазерной Плазмы Для Увеличения Интенсивности Сигнала При Спектрометрическом Определении Микрокомпонентов В Рудах

Закускин¹,

Попов²,

Зоров³

et al. 2018

Письма В Журнал Технической Физики

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We have studied the confinement of laser plasma by shock waves (also known as “spatial confinement” induced on an ore sample, as exemplified by changes in the intensity of Ag I 328.07 nm and Au I 267.60 nm emission lines. It is established that the maximum increase in intensity of these lines is observed at 2- to 2.5-μs delay, which corresponds to an increase in the plasma temperature up to 5900 K. The signal-to-noise ratio upon the spatial confinement of plasma is somewhat reduced, but the overall growth of signal intensity provides increase in the sensitivity of laser-induced breakdown spectrometry for determining trace elements in ores.

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Determination of Ag, Cu, Mo and Pb in soils and ores by laser-induced breakdown spectrometry

Abstract: Quantification of Ag, Cu, Mo and Pb in soils and rocks at the level of their crustal abundances by laser-induced breakdown spectrometry.

Cited by 39 publications

References 25 publications

Laser-Induced Breakdown Spectroscopy—An Emerging Analytical Tool for Mineral Exploration

Laser-Induced Breakdown Spectroscopy—An Emerging Analytical Tool for Mineral Exploration

Определение отношения Mn/Fe в железомарганцевых конкрециях с помощью безэталонной лазерно-искровой эмиссионной спектроскопии

Ударное Сжатие Лазерной Плазмы Для Увеличения Интенсивности Сигнала При Спектрометрическом Определении Микрокомпонентов В Рудах

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