| Full text | |
| Author(s): |
Total Authors: 2
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| Affiliation: | [1] Univ Fed Sao Carlos, Chem Dept, Grp Appl Instrumental Anal, Sao Carlos, SP - Brazil
Total Affiliations: 1
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| Document type: | Journal article |
| Source: | DETRITUS; v. 13, p. 131-139, DEC 2020. |
| Web of Science Citations: | 0 |
| Abstract | |
Electronic waste is the fastest growing class of residue in the world. This material presents several electric and electronic equipment (EEE) with a huge amount of base, valuable and toxic elements, thus increasing its recycling interest. This study is aimed to perform an exploratory analysis of printed circuit board (PCB) using Inductively coupled plasma optical emission spectrometry (ICP OES). A PCB from hard disk (HD) was split in 77 sub-samples using a lathe following by mineralization process. This step was conducted without milling process. So, the sub-samples were weighted and mixed with concentrated aqua regia solution, followed by mineralization using microwave oven radiation. Twenty elements were determined by ICP OES (Al, Au, Ba, Ca, Co, Cr, Cu, Fe, Mg, Mn, Nd, Ni, Pb, Pd, Pt, Sb, Sn, Ti and Zn), and Flame atomic absorption spectrometry - FAAS (Ag). With the concentration results, several graphical analyzes were performed: (1) scores map and loading plot; (2) correlation plot and; (3) PCB element distribution maps. With this exploratory analysis, it was possible visualize and understand the data, observing correlations among the elements, how close these correlations are and how is this correlation around the PCB components. This strategy was a good way to observe the PCB complexity and the importance of recycling these materials. (AU) | |
| FAPESP's process: | 16/17221-8 - Composition evaluation of hard discs from electronic waste using spectroanalytical techniques: rare earth and noble metals determination |
| Grantee: | Jeyne Pricylla Castro Castilho |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 12/01769-3 - Development of spectroanalytical methods for direct analysis of waste electrical and electronic equipments and cosmetics |
| Grantee: | Edenir Rodrigues Pereira Filho |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 14/22408-4 - Use of Laser-Induced Breakdown Spectroscopy (LIBS) for direct alloys analyses |
| Grantee: | Jeyne Pricylla Castro Castilho |
| Support Opportunities: | Scholarships in Brazil - Master |
| FAPESP's process: | 18/17753-5 - Laser-induced breakdown spectroscopy (LIBS) and chemometric tools: simulation of direct hard disk printed circuit board fragments analysis and sorting |
| Grantee: | Jeyne Pricylla Castro Castilho |
| Support Opportunities: | Scholarships abroad - Research Internship - Doctorate |
| FAPESP's process: | 16/01513-0 - Laser-Induced Breakdown Spectroscopy (LIBS) application in the analyses of electronic waste (printed circuit boards and polymers), food and difficult preparation liquid samples |
| Grantee: | Edenir Rodrigues Pereira Filho |
| Support Opportunities: | Regular Research Grants |