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| Format: | Artículo científico |
| Language: | en |
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Sociedad Química de México
2005
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| Online Access: | https://www.redalyc.org/articulo.oa?id=47549210 |
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| _version_ | 1866815534402633728 |
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| author | Mirian C. Santos |
| author_facet | Mirian C. Santos |
| contents | Clay and Refractory Materials Slurries in Inductively Coupled Plasma Optical Emission Spectrometry: Effects of Mechanochemical Synthesis on Emission Intensities of Analytes Mirian C. Santos Ana Rita A. Nogueira Joaquim A. Nóbrega Multidisciplinaria (Ciencias Naturales y Exactas) clays slurry ICP OES refractory materials mechanochemical synthesis The developed work investigated the application of mechanochemical synthesis for promotingreactions in the samples and for synthesizing new compounds for increment of emission intensities ofanalytes in clays and refractory materials slurries in inductively coupled plasma optical emissionspectrometry with axial viewing. The hypothesis is that it is possible to generate more volatile compoundsduring the grinding step and these new compounds will increase the intensities of emission signals forslurries introduced in the plasma. The action of two chemical modifiers, LiBO2 and Na2CO3, addedduring the grinding step was evaluated. The clays and refractory materials mixed with the chemicalmodifier were ground for 2 h using a high impact ball mill with a tungsten carbide grinding containerand balls. Slurries were prepared by dispersing the modified clays and refractory materials in 10% v v-1HNO3 solution and by shaking them in an ultrasonic bath to ensure good dispersion. The compoundsproduced during the grinding step were characterised by X-ray diffraction and thermogravimetricanalysis. Both techniques indicated the formation of new compounds in clays and refractory materialsby mechanochemical synthesis. Chemical modification effects were evaluated by changes of the emissionintensities of Al, Ca, Fe, K, Mg, P, Si, and Ti. Both modifiers caused increments of sensitivities for allanalytes in up to 665% (Na2CO3) and 583% (LiBO2) compared to the emission signals for analytespresent in slurries prepared using samples ground without adding modifiers. 2005 artículo científico 1870-249X https://www.redalyc.org/articulo.oa?id=47549210 en http://www.redalyc.org/revista.oa?id=475 Journal of the Mexican Chemical Society application/pdf Sociedad Química de México Journal of the Mexican Chemical Society (México) Num.2 Vol.49 |
| format | Artículo científico |
| id | redalyc_47549210 |
| language | en |
| publishDate | 2005 |
| publisher | Sociedad Química de México |
| spellingShingle | Clay and Refractory Materials Slurries in Inductively Coupled Plasma Optical Emission Spectrometry: Effects of Mechanochemical Synthesis on Emission Intensities of Analytes Mirian C. Santos Multidisciplinaria (Ciencias Naturales y Exactas) clays slurry ICP OES refractory materials mechanochemical synthesis Clay and Refractory Materials Slurries in Inductively Coupled Plasma Optical Emission Spectrometry: Effects of Mechanochemical Synthesis on Emission Intensities of Analytes Mirian C. Santos Ana Rita A. Nogueira Joaquim A. Nóbrega Multidisciplinaria (Ciencias Naturales y Exactas) clays slurry ICP OES refractory materials mechanochemical synthesis The developed work investigated the application of mechanochemical synthesis for promotingreactions in the samples and for synthesizing new compounds for increment of emission intensities ofanalytes in clays and refractory materials slurries in inductively coupled plasma optical emissionspectrometry with axial viewing. The hypothesis is that it is possible to generate more volatile compoundsduring the grinding step and these new compounds will increase the intensities of emission signals forslurries introduced in the plasma. The action of two chemical modifiers, LiBO2 and Na2CO3, addedduring the grinding step was evaluated. The clays and refractory materials mixed with the chemicalmodifier were ground for 2 h using a high impact ball mill with a tungsten carbide grinding containerand balls. Slurries were prepared by dispersing the modified clays and refractory materials in 10% v v-1HNO3 solution and by shaking them in an ultrasonic bath to ensure good dispersion. The compoundsproduced during the grinding step were characterised by X-ray diffraction and thermogravimetricanalysis. Both techniques indicated the formation of new compounds in clays and refractory materialsby mechanochemical synthesis. Chemical modification effects were evaluated by changes of the emissionintensities of Al, Ca, Fe, K, Mg, P, Si, and Ti. Both modifiers caused increments of sensitivities for allanalytes in up to 665% (Na2CO3) and 583% (LiBO2) compared to the emission signals for analytespresent in slurries prepared using samples ground without adding modifiers. 2005 artículo científico 1870-249X https://www.redalyc.org/articulo.oa?id=47549210 en http://www.redalyc.org/revista.oa?id=475 Journal of the Mexican Chemical Society application/pdf Sociedad Química de México Journal of the Mexican Chemical Society (México) Num.2 Vol.49 |
| title | Clay and Refractory Materials Slurries in Inductively Coupled Plasma Optical Emission Spectrometry: Effects of Mechanochemical Synthesis on Emission Intensities of Analytes |
| topic | Multidisciplinaria (Ciencias Naturales y Exactas) clays slurry ICP OES refractory materials mechanochemical synthesis |
| url | https://www.redalyc.org/articulo.oa?id=47549210 |