Method for the production of acrylonitrile-butadiene-styrene (ABS) and polycarbonate (PC)/ABS standards for direct Sb determination in plastics from e-waste using laser-induced breakdown spectroscopy

Author(s)

Aquino, Francisco W. B. ^[1] ; Paranhos, Caio M. ^[2] ; Pereira-Filho, Edenir R. ^[1]

Affiliation

^[1] Univ Fed Sao Carlos UFSCar, GAIA, DQ, POB 676, BR-13565905 Sao Carlos, SP - Brazil

^[2] Univ Fed Sao Carlos UFSCar, Lab Polimeros, DQ, POB 676, BR-13565905 Sao Carlos, SP - Brazil

• Document type: Journal article
• Source: Journal of Analytical Atomic Spectrometry; v. 31, n. 6, p. 1228-1233, JUN 2016.
• Web of Science Citations: 13

Abstract

This study presents a procedure for direct Sb determination in solid e-waste samples (polymers). Polymer standards (acrylonitrile-butadiene-styrene (ABS) and polycarbonate (PC)/ABS) were mixed with dichloromethane solution for homogenization and then dried, milled and sieved. The obtained powder was mixed with Sb2O3 and pressed in a thermopress. A calibration curve (Sb: 0 to 2.6% w/w) was prepared and analysed using LIBS (laser-induced breakdown spectroscopy) and more than 10 000 spectra were obtained. Carbon (247.856 nm) and Sb (259.805 nm) signals were recorded and normalized by their individual norm values. The best results were obtained when using C as the internal standard and the Sb concentration observed in the samples ranged from 0.15 to 0.68% (w/w). Standard addition tests were performed and the recoveries ranged from 63 to 83%. (AU)

• FAPESP's process: 13/04688-7 - Development of spectroanalytical methods for direct determination of toxic elements in polymeric materials of electronic waste by laser-induced breakdown spectroscopy
• Grantee: Francisco Wendel Batista de Aquino
• Support Opportunities: Scholarships in Brazil - Post-Doctoral