ORALS

SESSION: EnvironmentalWedPM1-R5	9th Intl. Symp. on Environmental, Policy, Management , Health, Economic , Financial, Social Issues Related to Technology & Scientific Innovation
Wed. 30 Nov. 2022 / Room: Arcadia 2
Session Chairs: Francisco Souza; Pinchas Mandell; Session Monitor: TBA

14:50: [EnvironmentalWedPM107] OS
MERCURY IN BRAZILIAN ARTISANAL MINING : RELATIONS WITH ENVIRONMENTAL DEGRADATION AND HUMAN HEALTH
Francisco Souza¹ ; ¹IFPB, Campina Grande, Brazil;
Paper Id: 160 [Abstract]

Mining has always been marked by exposure to various risks capable of promoting pathologies to workers [1]. Physical, chemical, biological, ergonomic and accident risks are common in the mineral extractive sector. Mineral deposit mining and concentration processes can release toxic metals into the environment, e.g. cyanides and mercury, used respectively in the leaching and amalgamation of gold. Mining is one of the main sources of environmental contamination by heavy metals, whose main vectors are wind and erosion [2]. They also have high levels of reactivity and bioaccumulation, that is, they are able to trigger several non-metabolizable chemical reactions, which makes them remain cumulative along the food chain [3]. Among the metals released into the environment, mercury is considered the most toxic potential and the only one that has been proven to undergo biomagnification along the trophic chain, also suffering, organification and reaching its most toxic form (methylmercury) in the aquatic system [4]. The consumption of contaminated fish is the main route of human exposure to methylmercury. Artisanal mining, which uses gold-mercury amalgam to extract gold from the ore, is a significant source of exposure for workers and surrounding populations. Miners burn the gold-mercury amalgam to vaporize the mercury and recover the gold. In addition, metal mercury residues are usually dumped near or into watercourses and can lead to high concentrations of methylmercury in fish. The consumption of contaminated fish by community residents can result in the ingestion of high levels of methylmercury [5].

References:
REFERENCES:
[1] M. N. A. de Sousa, A. L. D. Bezerra, B. M. O. Santos, J. E. Z., D. Bertoncello, P. R. V. Quemelo. Ver. Cient. Eletr. de Eng. Produção. 1099–1120. 2015..
[2] J. M. Navarro, R. Torres, K. Acuña, C. Duarte, P. H. Manriquez, M. Lardies, N. A. Lagos, C. Vargas, V. Aguilera. Chemosphere. 2013. 1242-1248.
[3] M. Cardoso. <https://www.infoescola.com/quimica/metais-pesados/>. 2011.
[4] B. S. Homrich, C. R. P. Fernandes, J. R. G. Viera. IBEAS. 2014. 1-7.
[5] Who. IOMC. 2008. 169 pp.

SESSION: SolidStateChemistryTueAM-R6	Alario-Franco international Symposium (2nd Intl Symp on Solid State Chemistry for Applications & Sustainable Development)
Tue. 29 Nov. 2022 / Room: Andaman 1
Session Chairs: Belén Levenfeld; Session Monitor: TBA

12:20: [SolidStateChemistryTueAM03] OS
CONTRIBUTION TO MINERAL RESEARCH IN THE MUNICIPALITY OF ALGODAO DE JANDAIRA, STATE OF PARAIBA, BRAZIL, WITH EMPHASIS TO ALGODAO HILL
Francisco Souza¹ ; ¹IFPB, Campina Grande, Brazil;
Paper Id: 409 [Abstract]

The main objective of this work was to analyze and understand the geological and tectonic constitution of the municipality of Algodão de Jandaíra, state of Paraíba and offer a contribution to mineral research, whether local or regional, since the municipality is inserted in the Borborema Province in northeastern Brazil, rich in industrial and metallic minerals such as tantalite/columbite, gold, scheelite, gemological minerals (beryl, marine water, tourmalines), etc. The geochemical parameters were defined using the portable X-ray fluorescence analytical instrument (p-XFR) for some major elements, traces and light rare earth (ETR-L) elements in active stream sediments, basalt vein, in pegmatite dike and quartz veins, in order to enrich the scientific literature regarding the advancement of research on mineral potential in any regions of Borborema Province. The results obtained by p-XFR, when plotted in tables and graphs, contributed to the important interpretations on ore content, geochemical associations, magmatic evolution and contribution of hydrothermalism, geological and tectonic weathering in the geochemical mobilization of the elements. Field research shows that the tectonic modeling of the rocky bodies of the studied area has a strong local structural control exercised by the Pocinhos and Casserengue shear zones. The set was the target of strong compression, stretching, boudinagem and injection of veins. Tectonic reactivations of extensional character were responsible for the production of open fractures, orthogonal to the regional trend, allowing the intrusion of basalt veins, modeling the drainage pattern and generating vertical walls that served as a panel for rock art, with prehistoric paintings made by ancestors, such as the pedra da letra in the passagem river. The studies culminated in the preparation of the Course Completion Work.

References:
[1] CAVALCANTE, R; CUNHA, A, L, C; COSTA, A, P; DANTAS, A, R; Carta geológica-geofísica: folha SB.24-Z-B-VI Picuí. Recife: CPRM, mapa color. Escala 1:100.000. (Avaliação dos Recursos Minerais do Brasil). 2008.
[2] DA SILVA, M. R. Petrographical and geochemical investigations of pegmatites in the Borborema Pegmatitic Province of Northeastern Brazil. 306 f. Tese de Doutorado não publicada – Ludwig Maximilians Universität München, Munique, 1993.
[3] FIGUEIREDO, M.C.H. Introdução à geoquímica dos elementos terras raras. Bol. IG-USP, série científica, v.16, p. 15-31. 1985.
[4] GALINDO, A. C; JARDIM DE SÁ, E. F; NASCIMENTO, R. S. C; HOLLANDA, M. H. B. M;
[5] NASCIMENTO, M. A. L; LARDEAUX, J. M; Caracterização geoquímica e contexto geodinâmico dos granitoides alcalinos na porção oriental da Faixa Seridó (RN-PB). In: 17o Simpósio de Geologia do Nordeste (p. 263- 267.). Fortaleza, Boletim 15. 1997.
[6] HAWAI’IVON BASSENHEIM, D.W. Evaluation of portable XRF for characterizing basalts: a case study on ballistic blocks from Kilauea. Gac Mac Abstracts. 2019.
[7] HENDERSON, P. General geochemical properties and abundances of the rare earth elements. In: HENDERSON, P. (Ed.).i?are earth elements geochemistry, Amsterdam: Elsevier, p. 1-32. 1984.