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Başlık: Central composite design for the optimisation of Cd and Pb determination in PVC materials by atomic absorption spectrometry after Kjeldahl digestion
Yazarlar: Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Kimya Anabilim Dalı.
0000-0003-0610-2019
Özer, Elif Tümay
Güçer, Şeref
AAI-3137-2021
37047586000
36849130600
Anahtar kelimeler: Materials science
Polymer science
PVC
Kjeldahl digestion
Pb
Cd
Central composite design
Plasma-mass-spectrometry
Plastic materials
Trace-elements
Packaging materials
Heavy-metals
Samples
Cadmium
Absorption
Absorption spectroscopy
Atomic absorption spectrometry
Chlorine compounds
Design
Metal recovery
Nitric acid
Polyvinyl chlorides
Sulfuric acid
Apparent recovery
Cd
Central composite design
Central composite designs
Certified reference materials
Certified values
Detection limits
Kjeldahl digestion
Optimisations
Pb concentration
Reference material
Response Surface Methodology
Wet acid digestion
Lead
Yayın Tarihi: Eki-2011
Yayıncı: Elsevier
Atıf: Özer, E. T. ve Güçer, S. (2011). "Central composite design for the optimisation of Cd and Pb determination in PVC materials by atomic absorption spectrometry after Kjeldahl digestion". Polymer Testing, 30(7), 773-778.
Özet: A convenient and simple wet acid digestion method was developed for the determination of Cd and Pb concentrations in polyvinyl chloride matrices by atomic absorption spectrometry. Response surface methodology (RSM) was used to optimise the conditions for maximum recovery and to understand the significance and interaction of the factors affecting the recovery of Cd and Pb. The central composite design was employed to evaluate the effects of nitric acid volume (2.6-9.4 mL), sulphuric acid volume (0.6-7.4 mL) and certified reference material (CRM) amount (0.1-0.5 g) on the metal recoveries (60 min, 200 degrees C and 20 min, 250 degrees C). The accuracy was also evaluated using the polyvinyl chloride reference material Fluxana FLX-PVC2. The apparent recoveries of the elements relative to the certified values ranged from 0.94 (Cd) to 0.92 (Pb). The method's detection limits were found to be 1.6 and 6.4 mg kg(-1) for Cd and Pb, respectively.
URI: https://doi.org/10.1016/j.polymertesting.2011.06.007
https://www.infona.pl/resource/bwmeta1.element.elsevier-0c50cec5-d1a4-33e0-9d9a-7374d25fa9e4
http://hdl.handle.net/11452/24110
ISSN: 0142-9418
Koleksiyonlarda Görünür:Scopus
Web of Science

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