Retardantes de chama bromados: uma revisão

Pieroni, Michelle Conti; Leonel, Juliana; Fillmann, Gilberto

doi:10.21577/0100-4042.20160176

Cited by 8 publications

(6 citation statements)

References 82 publications

(133 reference statements)

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“…Tanto é que atualmente existem mais de 175 produtos químicos descritos como retardantes de Brazilian Journal of Development, Curitiba, v.8, n.12, p. 76929-76942, dec., 2022 chama, os quais são divididos em quatro grupos baseados em sua constituição química: 1) inorgânicos (hidróxidos de alumínio, antimônio e estanho); 2) orgânicos halogenados (clorados e bromados); 3) organofosforados e 4) à base de nitrogênio. Sabe-se que o hidróxido de alumínio representa cerca de 40,4% da sua produção mundial, os bromados 19,7%, os fosforados 14,6%, os clorados 11,3%, os de óxido de antimônio 8,4%, e outros 5,6% (PIERONI, LEONEL, FILLMANN et al, 2017).…”

Section: Retardantes Químicos: Conceitos Características E Utilizaçãounclassified

Retardantes químicos nas ações de prevenção e combate a incêndios florestais: uma análise da aplicabilidade pelo Corpo de Bombeiros Militar do Paraná

Cruz¹

2022

BJDV

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Dentre as diversas atribuições do Corpo de Bombeiros Militar do Paraná, encontra-se o combate a incêndios florestais. Os potenciais e significativos prejuízos decorrentes de ocorrências dessa natureza, com impactos sobre a fauna, a flora, bem como sobre a vida humana e a propriedade, ensejam a utilização de variados recursos para minimizar tais situações. Para fazer frente a essa demanda, houve a preocupação e a necessidade de se desenvolver produtos químicos capazes de retardar as chamas, aumentando a eficiência do uso da água ou substituindo-a, facilitando, assim, as atividades de prevenção e combate a incêndios florestais. Esses produtos são classificados em retardantes de curta duração e retardantes de longa duração. Embora o Brasil ainda não disponha de legislação que regulamente a sua utilização, o Corpo de Bombeiros Militar do Paraná detém os meios necessários para o seu emprego, tema que será explorado neste trabalho.

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Section: Retardantes Químicos: Conceitos Características E Utilizaçãounclassified

Retardantes químicos nas ações de prevenção e combate a incêndios florestais: uma análise da aplicabilidade pelo Corpo de Bombeiros Militar do Paraná

Cruz¹

2022

BJDV

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“…Polybrominated diphenyl ethers (PBDEs) are a group of pollutants that has gained notoriety in recent decades due to their increased level in biotic and abiotic samples, not to mention several "in vitro" and "in vivo" assays that have evidenced their potential to cause damage [1][2][3][4][5][6][7]. PBDEs belong to the group of brominated flame retardants (BFRs) that were introduced in the 1970s as an alternative to other banned flame retardants such as polychlorinated biphenyls (PCB) and polybrominated biphenyls (PBBs) [8,9].…”

Section: Introductionmentioning

confidence: 99%

“…PBDEs are applied as a security system to retard, suppress, or inhibit the combustion process, thereby reducing risks of fires [9][10][11]. They are used in electronic devices like televisions and computers, circuit boards, cables, automotive components, and construction materials; they are also employed in the textile industry [12,13].…”

Section: Introductionmentioning

confidence: 99%

Assessing Surface Sediment Contamination by PBDE in a Recharge Point of Guarani Aquifer in Ribeirão Preto, Brazil

Ferrari

Souza

Annunciação

et al. 2019

Water

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Polybrominated diphenyl ethers (PBDEs) are used as flame retardants in several products, although they can act as neurotoxic, hepatotoxic and endocrine disruptors in organisms. In Brazil, their levels in aquatic sediments are poorly known; thus, concerns about the degree of exposure of the Brazilian population to PBDEs have grown. This study aimed to quantify the presence of PBDEs in sediment samples from an important groundwater water supply in Ribeirao Preto, Brazil, and to contribute to studies related to the presence of PBDEs in Brazilian environments. Gas chromatography coupled with Electron Capture Detection (GC-ECD) was used for quantification after submitting the samples to ultrasound-assisted extraction and clean-up steps. Results showed the presence of six PBDE, BDE-47 being the most prevalent in the samples, indicating a major contamination of the penta-PBDE commercial mixture. The concentration of ΣPBDEs (including BDE-28, -47, -66, -85, -99, -100, -138, -153, -154 and -209) varied between nd (not detected) to 5.4 ± 0.2 ng g−1. Although preliminary, our data show the anthropic contamination of a direct recharge area of the Aquifer Guarani by persistent and banned substances.

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“…Brazil is not yet endowed with legislation that regulates the use and quality of these products, or even advises users in the correct methods and quantities to be used (PIERONI et al, 2017). One of the biggest limitations on the use of fire retardants in Brazil is high prices, as the vast majority of them are imported.…”

Section: Introductionmentioning

confidence: 99%

Firefighting Combat With Fire Retardants at Different Concentrations

Fiedler

Lacerda

Ramalho

et al. 2019

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Forest fires are responsible for the destruction of millions of hectares of forest worldwide, and they lead to diverse economic, social, and landscape damage. Thus, the development of techniques to combat them has become increasingly necessary. In this context, this study aims to evaluate the efficiency of different fire retardants at different concentrations in fighting forest fires, considering the burning times and intensities of forest fuel. The study was conducted inside Eucalyptus spp. stands using three fire retardants (Silv-Ex, F-500, and HoldFire) at three concentrations (1%, 1.5%, and 2%), in addition to a water-only control. A completely randomized design was used, and the statistical analysis was completed based on experimental arrangements (factorial 3x3). Variables evaluated during the burning process were as follows: burning times (the time required for the flames to consume all forest fuel within the sample, with and without the retardant) and intensity of burning. Results regarding the time and intensity of burning in relation to the concentrations indicated a decreasing trend as the latter were increased, classifying the highest dose (2%) as the most efficient. For the retardants, all were observed to be efficient, with Silv-Ex being the most appropriate as it significantly reduced the burning intensity and increased the burning time of the forest fuel.

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Retardantes de chama bromados: uma revisão

Cited by 8 publications

References 82 publications

Retardantes químicos nas ações de prevenção e combate a incêndios florestais: uma análise da aplicabilidade pelo Corpo de Bombeiros Militar do Paraná

Retardantes químicos nas ações de prevenção e combate a incêndios florestais: uma análise da aplicabilidade pelo Corpo de Bombeiros Militar do Paraná

Assessing Surface Sediment Contamination by PBDE in a Recharge Point of Guarani Aquifer in Ribeirão Preto, Brazil

Firefighting Combat With Fire Retardants at Different Concentrations

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