Assessment of the concentration of Cr, Mn and Fe in sediment using laser-induced breakdown spectroscopy

Mekonnen, Kebede Nigussie; Ambushe, Abayneh A.; Chandravanshi, Bhagwan Singh; Abshiro, M. R.; Plessis, Anton du; McCrindle, Robert

doi:10.4314/bcse.v27i1.1

Cited by 6 publications

(5 citation statements)

References 27 publications

(30 reference statements)

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“…The LoD of Cr in rice powder using Cr line at 422.6 nm was 25 mg/kg; The Cr I 425.4 nm line was used as a representative for quantitative measurement because this line has the highest sensitivity compared to other Cr lines at 427.4 and 428.9 nm. This LoD is much lower compared to the result as described in the report [19], namely the LoD of Cr in powder material is 43 mg/kg. In the report, a standard LIBS using pulse Nd;YAG laser was employed and the powder material was prepared in the pellet form.…”

Section: ( )contrasting

confidence: 66%

Mesh-Assisted Laser-Induced Plasma Spectroscopy Using Pulse Carbon Dioxide Laser for Analysis of Powder Material by Confining the Powder in a Hole and Employing a Condensation Technique

et al. 2019

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Analysis of impurity in powder samples has been made by using metal-assisted laser-induced plasma spectroscopy utilizing a pulsed CO2 laser. Various powders including food powder, supplement powder, baby powder, and medicine powder were employed as sample materials. Experimentally, the powder sample was tightly put in a hole made on a metal plate and a metal mesh was placed on the powder surface. A pulse CO2 laser (10.6 μm, 1500 mJ) was irradiated on the powder surface passing through the metal mesh. Luminous plasma was induced by mesh just above the mesh when a part of laser energy attacked the mesh. The other part of laser energy impinged the powders and ablated fine particles of powder to the plasma to be atomized and excited. Identification and analysis of elements in powder were successfully conducted. A linear calibration curve of Cu in baby powder has been demonstrated with an intercept zero, certifying that the present technique was a high possibility to be employed for semi-quantitative analysis of elements in powder material. It was proved that by applying the present technique and employing a condensation technique, the detection sensitivity of Cr impurity in the powder sample increased about twenty times compared to the case without condensation. The limit of detection of Cr in rice powder sample was 25 mg/kg. The proposed method was very convenient for the identification and analysis of elements in the powder sample.

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Section: ( )contrasting

confidence: 66%

Mesh-Assisted Laser-Induced Plasma Spectroscopy Using Pulse Carbon Dioxide Laser for Analysis of Powder Material by Confining the Powder in a Hole and Employing a Condensation Technique

et al. 2019

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“…These high Mn contents, especially observed at LA1 where anthropogenic input is non-existent, can mainly be from weathering of the hydrothermally affected volcanic rocks near Addis Ababa (Alemayehu 2006). Compared with this, anthropogenic inputs from industrial activities such as the distilleries and battery factory in the area (Melaku et al 2005;Mekkonen et al 2013;Li et al 2014), are much less important. The above weathering process might also have caused an increase in the levels of other trace metals in the area (Alemayehu 2006;Alemayehu Abiye et al 2011).…”

Section: Resultsmentioning

confidence: 90%

Trace metal distributions in the sediments of the Little Akaki River, Addis Ababa, Ethiopia

Akele

Kelderman

Koning

et al. 2016

Environ Monit Assess

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The levels and distribution of trace metals (Cr, Mn, Co, Ni, Cu, Zn, Cd and Pb) at eleven water and sediment stations on the Little Akaki River (LAR) in Addis Ababa, Ethiopia, were determined. The binding forms of the metals in various geochemical fractions of the sediments were also quantified. The molar ratio of the sum of the simultaneously extractable metals (∑SEM) and acid-volatile sulphide (AVS)-as a measure for predicting metal-induced toxicity-was estimated. LAR trace levels in water for Cu, Zn, and, particularly Mn were, in most instances, higher than the recommended guidelines for healthy aquatic ecosystems. Total trace metal (TTM) contents in the LAR sediments at certain stations exceeded "threshold effect concentrations" and even "probable effect concentrations", especially in the cases of Zn, Cu, Ni, Pb, and at all stations for Mn. This became more apparent after applying "normalizations" to the relatively lower TTM adsorption capacities of coarse-grained, organic-poor sediments. Sequential extraction of the sediments showed that trace metals generally have a higher affinity for Fe-Mn oxide and organic matter/sulphidic fractions, followed by the residual fraction. Mn was relatively strongly bound to the exchangeable, carbonate bound fractions, whereas a large proportion of Cr was found in the residual fraction. The Σ[SEM]/[AVS] ratio pointed to potential metal-induced toxicity of sediments collected from seven out of the eleven stations. The results indicate that trace metal pollution pose risks to the health of ecosystems, and to human communities that use the river for a range of different purposes.

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“…For instance, Lazic et al [30] analyzed heavy metals traces in an Antarctic sediment core. Similarly, Barbini et al [31] reported the qualitative and quantitative analysis of several heavy metals in marine sediments extracted during the XI Italian Antarctic campaign. In another study, Cuñat et al [32] used a portable LIBS system to measure in situ traces of Pb in road sediments.…”

Section: Introductionmentioning

confidence: 93%

Rapid monitoring of heavy metals in fluvial sediments using laser–induced breakdown spectroscopy

et al. 2019

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En este trabajo, se realizó un análisis cuantitativo de los metales pesados Cr y Cu en sedimentos fluviales mediante espectroscopia de ruptura inducida por láser (LIBS) para evaluar el antropogénico. Para realizar el análisis, se recolectaron diferentes muestras de sedimento en las posiciones seleccionadas. Se construyeron curvas de calibración de adición estándar para Cr y Cu midiendo la línea Cr I a 357.87 nm y la línea Cu I a 324.75 nm. Los contenidos de humedad y materia orgánica de los sedimentos fueron tomados en cuenta para superar el efecto matriz. Los modelos cuantitativos se evaluaron estadísticamente para evaluar la robustez y la capacidad de predicción del método. Los valores bajos de la raíz - medias - errores cuadrados para la calibración ( RMSEC ), la predicción ( RMSEP ) y la validación cruzada (RMSECV ) se calcularon. Se obtuvieron valores altos de los coeficientes de correlación de calibración ( R 2 c = 0.984 para Cr; R 2 c = 0.986 para Cu) y validación cruzada ( R 2 cv = 0.985 para Cr; R 2 cv = 0.981 para Cu). Los límites de detección calculados ( LoD ) fueron 2.9 ppm para Cr y 3.3 ppm para Cu, y los límites de cuantificación ( LoQ) fueron 9.5 ppm para Cr y 11 ppm para Cu. Las concentraciones de Cr y Cu superiores a los valores de referencia se obtuvieron en los sedimentos aguas abajo (Cr: 49 ppm, Cu: 81 ppm) que son indicativos de la contaminación de la cuenca por metales pesados debido al derrame de efluentes no tratados derivados de actividades antropogénicas. . El análisis LIBS se optimizó para el monitoreo confiable de metales pesados en sedimentos fluviales.

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Assessment of the concentration of Cr, Mn and Fe in sediment using laser-induced breakdown spectroscopy

Cited by 6 publications

References 27 publications

Mesh-Assisted Laser-Induced Plasma Spectroscopy Using Pulse Carbon Dioxide Laser for Analysis of Powder Material by Confining the Powder in a Hole and Employing a Condensation Technique

Mesh-Assisted Laser-Induced Plasma Spectroscopy Using Pulse Carbon Dioxide Laser for Analysis of Powder Material by Confining the Powder in a Hole and Employing a Condensation Technique

Trace metal distributions in the sediments of the Little Akaki River, Addis Ababa, Ethiopia

Rapid monitoring of heavy metals in fluvial sediments using laser–induced breakdown spectroscopy

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