Research on the Spatial Distribution Characteristics and Inhalation Health Risk Assessment of Bacterial Aerosols in Spraying Environments DOI Open Access
Qian Gao, Miao Dai, Guangyu Lei

et al.

Water, Journal Year: 2024, Volume and Issue: 16(22), P. 3187 - 3187

Published: Nov. 7, 2024

As a key water source for urban landscape entertainment and miscellaneous municipal uses, the reuse safety of reclaimed has attracted much attention. Given deficiencies in current research on bacterial aerosol-related risks, this study conducted systematic spatial distribution law aerosols spraying environments exposure characteristics various populations through simulated experiments population surveys, basis, quantitatively evaluated inhalation risk aerosols. Results indicated that concentration position within their residence time at different positions were related to sprayed source. Specifically, atomization factor decreased with increase horizontal distance from nozzle, reached saturated state eighth minute after nozzle started spraying. At height 1.5 m, distances 1 2 3 4 m coefficients (mL water/m3 air) 30.25, 8.52, 0.81, 1.33 × 10−3, respectively. However, particle size space was independent The peak between 2.1 4.7 µm, its accounts more than 50%. Based above results, instantaneous contact crowd exposed spray park lawn irrigation sprinklers roads obtained shooting experiments. showed under same environment, when people roads, health single relatively high. manifested as follows: adult males > females children; however, none them exceed acceptable level 10−3. findings paper can provide scientific basis safe

Language: Английский

EXPOSIÇÃO A METAIS E OUTRAS SUBSTÂNCIAS TÓXICAS PRESENTES NA VAPORIZAÇÃO: UMA REVISÃO DE LITERATURA DOI Open Access

Lyriel de Oliveira Santos,

Afonso Rocha, Ivone Conrado de Souza

et al.

Revista Foco, Journal Year: 2024, Volume and Issue: 17(10), P. e6713 - e6713

Published: Oct. 31, 2024

O cigarro eletrônico que surgiu como uma forma alternativa para o tabagismo, ganhou popularidade entre a juventude devido seus diversos sabores, modelos e uso recorrente em festas. No entanto, pesquisas atuais abordam riscos atrelados não só presença de nicotina, mas também metais pesados outras substâncias cancerígenas. Dessa forma, este trabalho busca realizar um levantamento acerca das realizadas nos últimos dez anos, fim conhecer suas interfaces. Foram reunidos artigos originais indexados 8 bases dados relevância acadêmica após seleção 9 foram analisados. A partir da análise, foi constatado ampla aplicação biomarcadores vapers presentes na urina, hálito exalado ambiente vaporização, bem sua correlação direta possíveis patologias complicações saúde, além correspondência com frequência vaporização destes usuários, consideram fator relevante à cessação do eletrônico, os danos respiratórios. Estes ainda podem ser interceptados por intervenções mediante seu modelo comportamento, sendo mais susceptíveis interromper no estado manutenção. Ademais, há necessidade maiorfoco clínicas observacionais, maior rigidez nas normativas regulamentam venda, fabricação dos cigarros eletrônicos.

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Research on the Spatial Distribution Characteristics and Inhalation Health Risk Assessment of Bacterial Aerosols in Spraying Environments DOI Open Access
Qian Gao, Miao Dai, Guangyu Lei

et al.

Water, Journal Year: 2024, Volume and Issue: 16(22), P. 3187 - 3187

Published: Nov. 7, 2024

As a key water source for urban landscape entertainment and miscellaneous municipal uses, the reuse safety of reclaimed has attracted much attention. Given deficiencies in current research on bacterial aerosol-related risks, this study conducted systematic spatial distribution law aerosols spraying environments exposure characteristics various populations through simulated experiments population surveys, basis, quantitatively evaluated inhalation risk aerosols. Results indicated that concentration position within their residence time at different positions were related to sprayed source. Specifically, atomization factor decreased with increase horizontal distance from nozzle, reached saturated state eighth minute after nozzle started spraying. At height 1.5 m, distances 1 2 3 4 m coefficients (mL water/m3 air) 30.25, 8.52, 0.81, 1.33 × 10−3, respectively. However, particle size space was independent The peak between 2.1 4.7 µm, its accounts more than 50%. Based above results, instantaneous contact crowd exposed spray park lawn irrigation sprinklers roads obtained shooting experiments. showed under same environment, when people roads, health single relatively high. manifested as follows: adult males > females children; however, none them exceed acceptable level 10−3. findings paper can provide scientific basis safe

Language: Английский

Citations

0