A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Source-specific risks of synchronous heavy metals and PAHs in inhalable particles at different pollution levels: Variations and health risks during heavy pollution
Highlights Source-specific risks of synchronous PAHs and heavy metals at different PM levels were studied. Industrial source caused high health risks (81% of HQ and 49% of R) even during ‘clean’ days. Relative impacts of industrial source to risks declined by about 25% during haze. Relative impacts of diesel and gasoline vehicles to R, and crustal dust to HQ increased during haze.
Abstract Synchronous heavy metals (HMs) and polycyclic aromatic hydrocarbons (PAHs) in inhalable particulate matter (PM10) were measured during 2009–2012 and 2015–2016 in a Chinese megacity (Chengdu) to understand the variations in source-specific health risks during haze episodes. Samples were divided into four mass concentration levels: PM10 ≤ 150 μg m−3 (L1), 150 μg m−3 < PM10 ≤ 250 μg m−3 (L2), 250 μg m−3 < PM10 ≤ 350 μg m−3 (L3), and PM10 > 350 μg m−3 (L4). The percentages of some HMs and PAHs (accounting for PM10) decreased from L1 to L4, indicating that they exhibited lower growth rates than other species during heavy pollution. The combined cancer risk (R) for HMs and PAHs was higher at L1 and L4, and the combined non-cancer risk (HQ) was significantly high at L4. The HMs and PAHs combined source-specific risk apportion (HP-SRA) model was employed to quantify the source-specific risks. The relative contributions of (i) diesel and gasoline vehicles to the R, and (ii) crustal dust to the HQ increased during heavy pollution (L3 and L4). The relative contribution of industrial source declined from 81% (L1) to 60% (L4) for the HQ, and from 49% (L1) to 36% (L4) for the R, implying that the control of industrial emissions during heavy pollution events could alleviate risk growth as a co-benefit of controlling PM mass concentration. However, the risks associated with industrial emissions should also be considered during ‘clean’ days.
Source-specific risks of synchronous heavy metals and PAHs in inhalable particles at different pollution levels: Variations and health risks during heavy pollution
Highlights Source-specific risks of synchronous PAHs and heavy metals at different PM levels were studied. Industrial source caused high health risks (81% of HQ and 49% of R) even during ‘clean’ days. Relative impacts of industrial source to risks declined by about 25% during haze. Relative impacts of diesel and gasoline vehicles to R, and crustal dust to HQ increased during haze.
Abstract Synchronous heavy metals (HMs) and polycyclic aromatic hydrocarbons (PAHs) in inhalable particulate matter (PM10) were measured during 2009–2012 and 2015–2016 in a Chinese megacity (Chengdu) to understand the variations in source-specific health risks during haze episodes. Samples were divided into four mass concentration levels: PM10 ≤ 150 μg m−3 (L1), 150 μg m−3 < PM10 ≤ 250 μg m−3 (L2), 250 μg m−3 < PM10 ≤ 350 μg m−3 (L3), and PM10 > 350 μg m−3 (L4). The percentages of some HMs and PAHs (accounting for PM10) decreased from L1 to L4, indicating that they exhibited lower growth rates than other species during heavy pollution. The combined cancer risk (R) for HMs and PAHs was higher at L1 and L4, and the combined non-cancer risk (HQ) was significantly high at L4. The HMs and PAHs combined source-specific risk apportion (HP-SRA) model was employed to quantify the source-specific risks. The relative contributions of (i) diesel and gasoline vehicles to the R, and (ii) crustal dust to the HQ increased during heavy pollution (L3 and L4). The relative contribution of industrial source declined from 81% (L1) to 60% (L4) for the HQ, and from 49% (L1) to 36% (L4) for the R, implying that the control of industrial emissions during heavy pollution events could alleviate risk growth as a co-benefit of controlling PM mass concentration. However, the risks associated with industrial emissions should also be considered during ‘clean’ days.
Source-specific risks of synchronous heavy metals and PAHs in inhalable particles at different pollution levels: Variations and health risks during heavy pollution
Sun, Yueming (author) / Tian, Yingze (author) / Xue, Qianqian (author) / Jia, Bin (author) / Wei, Yang (author) / Song, Danlin (author) / Huang, Fengxia (author) / Feng, Yinchang (author)
2020-09-23
Article (Journal)
Electronic Resource
English
Nasal filter reveal exposure risks of inhalable particulates and heavy metals in urban women
| DOAJ | 2024
Nasal filter reveal exposure risks of inhalable particulates and heavy metals in urban women
| Elsevier | 2024