Banca de DEFESA: Andrea Martins Dantas

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : Andrea Martins Dantas
DATE: 21/08/2023
TIME: 14:00
LOCAL: UED-FCE
TITLE:

PRESENCE OF HEAVY METALS IN PRIMARY TEETH OF CHILDREN DAUGHTER OF COLLECTORS AT THE STRUCTURAL DUMP IN BRASÍLIA, BRAZIL: A COMPARATIVE STUDY

KEY WORDS:

Key words: Heavy metals, Tooth deciduous, Waste pickers, Biomarket, Child

PAGES: 128
BIG AREA: Outra
AREA: Multidisciplinar
SUMMARY:

ABSTRACT Environmental contamination by heavy metals can represent a serious public health problem. This reality is often found in unhealthy environments, such as open-air dump sites, and predominantly affects individuals in situations of extreme social vulnerability. Human teeth are competent biological matrices to demonstrate long-term environmental exposure to metals. The objective of this study was to analyze the presence of Chromium (Cr), Arsenic (As), Cadmium (Cd) and Lead (Pb) in deciduous teeth of children between 6 and 12 years old, whose parents were collectors of recyclable materials from the dump Structural (G1) and compare with teeth of children living in two other Administrative Regions of the Federal District: Plano Piloto (G2) and Ceilândia (G3). A total of 305 teeth were collected and analyzed by ICP-MS. The concentration values of the analyzed metals were compared using the Kruskal-Wallis and Mann - Whitney test, after verifying the normality of the data using the Kolmogorov - Smirnov test. Dunn's Post Hoc multiple comparison test was used for pairwise comparison. The highest values of concentrations of Cr, As, Cd and Pb were respectively (0.142ppm),(0.003ppm), (0.127ppm) and (0.184ppm). P< 0.001. The results suggest that children from Group G3 are more exposed to Lead than the other two groups and that children from Group G1 are more exposed to Arsenic. Furthermore, the concentration of Chromium was significantly higher in Ceilândia (G3) and lower in Plano Piloto (G2), Cadmium was significantly higher in Plano Piloto and lower in Plano Piloto (G2). Chromium and Arsenic concentrations were significantly higher among children whose fathers and mothers were collectors. The concentration of As was higher in the children's teeth when the mother worked as a pregnant scavenger. More studies are needed to better understand the possible causes of certain groups having higher concentrations of heavy metals than others, so that protective actions can be taken for these children and their families.

COMMITTEE MEMBERS:
Externa à Instituição - CLÁUDIA MARIA DE SOUZA PERUCH - UCB
Interna - 2102264 - DAYANI GALATO
Interno - 1974062 - MARCOS TAKASHI OBARA
Presidente - 1974065 - VANESSA RESENDE NOGUEIRA CRUVINEL