Exposure of nursing mothers to polycyclic aromatic hydrocarbons: Levels of un-metabolized and metabolized compounds in breast milk, major sources of exposure and infants’ health risks

2020 ◽  
Vol 266 ◽  
pp. 115243
Author(s):  
Marta Oliveira ◽  
Sofia Duarte ◽  
Cristina Delerue-Matos ◽  
Angelina Pena ◽  
Simone Morais
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Breast Milk ◽  
Health Risks ◽  
Aromatic Hydrocarbons ◽  
Nursing Mothers ◽  
Polycyclic Aromatic

scholarly journals Classroom Dust-Bound Polycyclic Aromatic Hydrocarbons in Jeddah Primary Schools, Saudi Arabia: Level, Characteristics and Health Risk Assessment

2020 ◽  
Vol 17 (8) ◽  
pp. 2779
Author(s):  
Mansour A. Alghamdi ◽  
Salwa K. Hassan ◽  
Noura A. Alzahrani ◽  
Marwan Y. Al Sharif ◽  
Mamdouh I. Khoder
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Cancer Risk ◽  
Urban Schools ◽  
Health Risks ◽  
Aromatic Hydrocarbons ◽  
Primary Schools ◽  
Residential Schools ◽  
Suburban Schools ◽  
Lifetime Cancer Risk ◽  
Polycyclic Aromatic

Data concerning polycyclic aromatic hydrocarbons (PAHs) in Jeddah’s schools, Saudi Arabia, and their implications for health risks to children, is scarce. Classroom air conditioner filter dusts were collected from primary schools in urban, suburban and residential areas of Jeddah. This study aimed to assess the characteristics of classroom-dust-bound PAHs and the health risks to children of PAH exposure. Average PAH concentrations were higher in urban schools than suburban and residential schools. Benzo (b)fluoranthene (BbF), benzo(ghi)perylene (BGP), chrysene (CRY) and Dibenz[a,h]anthracene (DBA) at urban and suburban schools and BbF, BGP, fluoranthene (FLT) and indeno (1, 2, 3, −cd)pyrene (IND) at residential schools were the dominant compounds in classroom dust. PAHs with five aromatic rings were the most abundant at all schools. The relative contribution of the individual PAH compounds to total PAH concentrations in the classroom dusts of schools indicate that the study areas do share a common source, vehicle emissions. Based on diagnostic ratios of PAHs, they are emitted from local pyrogenic sources, and traffic is the significant PAH source, with more significant contributions from gasoline-fueled than from diesel cars. Based on benzo[a]pyrene equivalent (BaPequi) calculations, total carcinogenic activity (TCA) for total PAHs represent 21.59% (urban schools), 20.99% (suburban schools), and 18.88% (residential schools) of total PAH concentrations. DBA and BaP were the most dominant compounds contributing to the TCA, suggesting the importance of BaP and DBA as surrogate compounds for PAHs in this schools. Based on incremental lifetime cancer risk (ILCingestion, ILCRinhalation, ILCRdermal) and total lifetime cancer risk (TLCR)) calculations, the order of cancer risk was: urban schools > suburban schools > residential schools. Both ingestion and dermal contact are major contributors to cancer risk. Among PAHs, DBA, BaP, BbF, benzo(a)anthracene (BaA), benzo(k)fluoranthene (BkF), and IND have the highest ILCR values at all schools. LCR and TLCR values at all schools were lower than 10−6, indicating virtual safety. DBA, BaP and BbF were the predominant contributors to cancer effects in all schools.

Investigation of sources, ecological and health risks of sedimentary polycyclic aromatic hydrocarbons in River Benue, Nigeria

2021 ◽  
Vol 22 ◽  
pp. 101457
Author(s):  
Imisi Michael Arowojolu ◽  
Sylvester Mbaavaga Tongu ◽  
Adams Udoji Itodo ◽  
Fernando Fabriz Sodre ◽  
Barnabas Aloo Kyenge ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Health Risks ◽  
Aromatic Hydrocarbons ◽  
Polycyclic Aromatic

scholarly journals Characteristics, Sources, and Health Risks of Atmospheric PM2.5-Bound Polycyclic Aromatic Hydrocarbons in Hsinchu, Taiwan

2017 ◽  
Vol 17 (2) ◽  
pp. 563-573 ◽  
Author(s):  
Tzu-Ting Yang ◽  
Chin-Yu Hsu ◽  
Yu-Cheng Chen ◽  
Li-Hao Young ◽  
Cheng-Hsiung Huang ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Health Risks ◽  
Aromatic Hydrocarbons ◽  
Polycyclic Aromatic ◽  
Atmospheric Pm2.5

Sources and health risks of ambient polycyclic aromatic hydrocarbons in China

2020 ◽  
Vol 698 ◽  
pp. 134229 ◽  
Author(s):  
Fenglin Han ◽  
Hao Guo ◽  
Jianlin Hu ◽  
Jie Zhang ◽  
Qi Ying ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Health Risks ◽  
Aromatic Hydrocarbons ◽  
Polycyclic Aromatic
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