Some problems connected with boron determination by atomic absorption spectroscopy and the sensitivity improvement
Апстракт
Two atomizers were compared: an N2O-C2H2 flame and a stabilized U-shaped DC arc with aerosol supply. Both the high plasma temperature and the reducing atmosphere obtained by acetylene addition to the argon stream substantially increase the sensitivity of boron determination by atomic absorption spectroscopy (AAS) when the arc atomizer is used. The results were compared with those for silicon as a control element. The experimental characteristic concentrations for both elements were compared with the computed values. The experimentally obtained characteristic concentration for boron when using the arc atomizer was in better agreement with the calculated value. It was estimated that the influence of stable monoxide formation on the sensitivity for both elements was about the same, but reduction of analyte and formation of non-volatile carbide particles was more important for boron, which is the main reason for the low sensitivity of boron determination using a flame atomizer. The use of ...an arc atomizer suppresses this interference and significantly improves the sensitivity of the determination.
Кључне речи:
boron / atomic absorption spectroscopy / characteristic concentration / DC arc plasmaИзвор:
Journal of the Serbian Chemical Society, 2001, 66, 8, 535-542Колекције
Институција/група
VinčaTY - JOUR AU - Pavlović, Mirjana S. AU - Savović, Jelena AU - Marinković, Miloš PY - 2001 UR - https://vinar.vin.bg.ac.rs/handle/123456789/2477 AB - Two atomizers were compared: an N2O-C2H2 flame and a stabilized U-shaped DC arc with aerosol supply. Both the high plasma temperature and the reducing atmosphere obtained by acetylene addition to the argon stream substantially increase the sensitivity of boron determination by atomic absorption spectroscopy (AAS) when the arc atomizer is used. The results were compared with those for silicon as a control element. The experimental characteristic concentrations for both elements were compared with the computed values. The experimentally obtained characteristic concentration for boron when using the arc atomizer was in better agreement with the calculated value. It was estimated that the influence of stable monoxide formation on the sensitivity for both elements was about the same, but reduction of analyte and formation of non-volatile carbide particles was more important for boron, which is the main reason for the low sensitivity of boron determination using a flame atomizer. The use of an arc atomizer suppresses this interference and significantly improves the sensitivity of the determination. T2 - Journal of the Serbian Chemical Society T1 - Some problems connected with boron determination by atomic absorption spectroscopy and the sensitivity improvement VL - 66 IS - 8 SP - 535 EP - 542 UR - https://hdl.handle.net/21.15107/rcub_vinar_2477 ER -
@article{ author = "Pavlović, Mirjana S. and Savović, Jelena and Marinković, Miloš", year = "2001", abstract = "Two atomizers were compared: an N2O-C2H2 flame and a stabilized U-shaped DC arc with aerosol supply. Both the high plasma temperature and the reducing atmosphere obtained by acetylene addition to the argon stream substantially increase the sensitivity of boron determination by atomic absorption spectroscopy (AAS) when the arc atomizer is used. The results were compared with those for silicon as a control element. The experimental characteristic concentrations for both elements were compared with the computed values. The experimentally obtained characteristic concentration for boron when using the arc atomizer was in better agreement with the calculated value. It was estimated that the influence of stable monoxide formation on the sensitivity for both elements was about the same, but reduction of analyte and formation of non-volatile carbide particles was more important for boron, which is the main reason for the low sensitivity of boron determination using a flame atomizer. The use of an arc atomizer suppresses this interference and significantly improves the sensitivity of the determination.", journal = "Journal of the Serbian Chemical Society", title = "Some problems connected with boron determination by atomic absorption spectroscopy and the sensitivity improvement", volume = "66", number = "8", pages = "535-542", url = "https://hdl.handle.net/21.15107/rcub_vinar_2477" }
Pavlović, M. S., Savović, J.,& Marinković, M.. (2001). Some problems connected with boron determination by atomic absorption spectroscopy and the sensitivity improvement. in Journal of the Serbian Chemical Society, 66(8), 535-542. https://hdl.handle.net/21.15107/rcub_vinar_2477
Pavlović MS, Savović J, Marinković M. Some problems connected with boron determination by atomic absorption spectroscopy and the sensitivity improvement. in Journal of the Serbian Chemical Society. 2001;66(8):535-542. https://hdl.handle.net/21.15107/rcub_vinar_2477 .
Pavlović, Mirjana S., Savović, Jelena, Marinković, Miloš, "Some problems connected with boron determination by atomic absorption spectroscopy and the sensitivity improvement" in Journal of the Serbian Chemical Society, 66, no. 8 (2001):535-542, https://hdl.handle.net/21.15107/rcub_vinar_2477 .