Characterisation of coal slurries for introduction into ICP OES for multi-element determinations

Mujuru, Munyaradzi; McCrindle, Robert; Panichev, Nikolay

doi:10.1039/b819963a

Cited by 13 publications

(8 citation statements)

References 40 publications

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“…It has been suggested in the literature [11][12][13] to use Triton X 100 solutions with a concentration of approximately 0.1-1.0% for suspension preparation. Good particle wetting is observed at these surfactant concentrations.…”

Section: Development Of a Technique For Suspension Preparationmentioning

confidence: 99%

“…The initial sample of coke or coal [8][9][10] or a sus pension of the finely ground sample is prepared and introduced directly into the atomizer [11][12][13] for direct determination of elemental composition. These techniques have a series of drawbacks: a relatively high cost of analysis (ICP AES, mass spectroscopy with inductively coupled plasma) [11][12][13], as well as need to use sophisticated equipment (neutron activation analysis) [3,8] and careful graduation to remove the effects of a matrix (X ray fluorescence analysis) [9,10].…”

mentioning

confidence: 99%

“…These techniques have a series of drawbacks: a relatively high cost of analysis (ICP AES, mass spectroscopy with inductively coupled plasma) [11][12][13], as well as need to use sophisticated equipment (neutron activation analysis) [3,8] and careful graduation to remove the effects of a matrix (X ray fluorescence analysis) [9,10]. These techniques do not allow simultaneous determi nation of multiple elements (atomic absorption spec troscopy) [14,15].…”

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confidence: 99%

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New techniques for coal sample preparation for total reflection X-ray fluorescence assay

Alov

Sharanov

2015

Moscow Univ. Chem. Bull.

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Modern methods for determination of the elemental composition of coal materials are discussed. New approaches for the coal sample pretreatment for the total reflection X ray fluorescence (TXRF) assay are suggested. A new technique for sample pretreatment-preparation of suspensions-is selected. The con ditions of sample pretreatment and analysis are determined experimentally: sample weight, type and concen tration of surfactant, and internal standard. The stability of the obtained suspensions is assessed, and recom mendations for their use in TXRF assay are presented.

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Section: Development Of a Technique For Suspension Preparationmentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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New techniques for coal sample preparation for total reflection X-ray fluorescence assay

Alov

Sharanov

2015

Moscow Univ. Chem. Bull.

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“…When considering a log-normal size distribution, the degree of poly-dispersion or width of the particle size distribution is expressed in terms of the percentage standard deviation of the logarithm of the distribution, σ . Narrow size distributions for brown coal particles, with values of σ in the interval 5-10 %, have been reported by a variety of authors (Mujuru et al, 2009;Civiš and Hovorka, 2010;Wang and Tichenor, 1981).…”

Section: Hygroscopic and Scattering Behaviour Of Lignite Particlesmentioning

confidence: 99%

Clear-air lidar dark band

et al. 2018

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Abstract. This paper illustrates measurements carried out by the Raman lidar BASIL in the frame of the HD(CP) 2 Observational Prototype Experiment (HOPE), revealing the presence of a clear-air dark band phenomenon (i.e. a minimum in lidar backscatter echoes) in the upper portion of the convective boundary layer. The phenomenon is clearly distinguishable in the lidar backscatter echoes at 532 and 1064 nm, as well as in the particle depolarisation data. This phenomenon is attributed to the presence of lignite aerosol particles advected from the surrounding open pit mines in the vicinity of the measuring site. The paper provides evidence of the phenomenon and illustrates possible interpretations for its occurrence.

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“…When considering a log-normal size distribution, the degree of poly-dispersion or width of the particle size distribution is expressed in terms of the percentage standard deviation of the logarithm of the distribution, . Narrow size distributions for brown coal particles, with values of in the interval 5-10 %, have been reported by a variety of authors (Mujuru et al, 2009;Civiš andHovorka, 2010, Wang andTichenor, 1981).…”

Section: Hygroscopic and Scattering Behavior Of Lignite Particlesmentioning

confidence: 99%

Clear-air lidar dark band

Girolamo¹,

Scoccione²,

Cacciani³

et al. 2017

Preprint

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Abstract. This paper illustrates measurements carried out by the Raman lidar BASIL in the frame of the HD(CP)2) Observational Prototype Experiment (HOPE), revealing the presence of a clear-air dark band phenomenon (i.e. a minimum in lidar backscatter echoes) in the upper portion of the convective boundary layer. The phenomenon is clearly distinguishable in the lidar backscatter echoes at 532 and 1064 nm, as well as in the particle depolarization data. This phenomenon is 10 attributed to the presence of lignite aerosol particles advected from the surrounding open pit mines in the vicinity of the measuring site. The paper provides evidence of the phenomenon and illustrates possible interpretations for its occurrence.

show abstract

Characterisation of coal slurries for introduction into ICP OES for multi-element determinations

Cited by 13 publications

References 40 publications

New techniques for coal sample preparation for total reflection X-ray fluorescence assay

New techniques for coal sample preparation for total reflection X-ray fluorescence assay

Clear-air lidar dark band

Clear-air lidar dark band

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