Concentrations of total suspended particulates, fine particles and their anionic compounds in ambient air and Indoor air

Background. Cement plants generate particulate matter (PM) across processes from raw material preparation to packaging. The presence of total suspended particulates (TSP) coming out of the stack causes a high accumulation of dust in residential areas. Human exposure to TSP could affect human health and wellbeing. Objectives. The present study aims to evaluate concentrations of TSP and to estimate the health risks of TSP exposure through the inhalation pathway in communities surrounding a private cement industry in Maros regency, Indonesia. Methods. Total suspended particulates were collected using a high-volume air sampler (HVAS) at five locations. Samples were taken by grab sampling for 24 hours. The SCREEN3 program was used to view the maximum range and distribution of pollutants based on the geographical, stack profiles and meteorological factors in the study area. Hazard quotient (HQ) was used to estimate non-carcinogenic risks of TSP in surrounding communities. Results. Total suspended particulate concentrations were measured with a maximum value of 133.24 μg/m3 and a minimum value of 18.48 μg/m3. This maximum value exceeds the minimum acceptable level from Canadian National Ambient Air Quality Objectives (C-NAAQOs). The non-carcinogenic risks from the inhalation pathway were low except for location 3 (HQ>1) across all locations. Conclusions. The cement plant may significantly contribute to total TSP concentrations in air and may potentially have adverse effects on human health. Communities near the cement plant are vulnerable to TSP exposure and measures are needed to reduce TSP in Maros regency, Indonesia. Participant Consent. Obtained Ethics Approval. This study was approved by the Health Research Ethics Committee of Hasanuddin University with protocol number 28920093022. Competing Interests. The authors declare no competing financial interests.

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Toxicity potential of particulates in the airshed of haulage vehicle park

Global NEST Journal ◽

10.30955/gnj.000948 ◽

2013 ◽

Vol 15 (4) ◽

pp. 466-473 ◽

Cited By ~ 8

Keyword(s):

Control Point ◽

Ambient Air ◽

Sampling Point ◽

Total Suspended Particulate ◽

Suspended Particulates ◽

Total Suspended Particulates ◽

Suspended Particulate ◽

Toxicity Potential ◽

Major Highway ◽

Regulatory Measure

<p>This study examined the toxicity potential of total suspended particulate in the airshed of a haulage vehicle park located in a major highway connecting Lagos, the commercial centre of Nigeria to its other parts. It has an approximate area of 0.6 km2. Ambient air total suspended particulates (TSP) were monitored at five different sub- parks using the GT331 particulate monitor. A control sampling point was also set at about a kilometer southward of the sub-parks. The average measured particulate concentrations within the park ranged between 197.07 and 653.28 µg m-3 with an average of 334.5 µg m-3 but at the control point, it was between 18.5 and 46.6 µg m-3 with an average of 36.23 µg m-3. An assessment of toxicity potential of these particulates shows unhealthy air conditions at the haulage park. It was between 0.58 and 6.00 at the park’s sampling points but ranged between 0.11 and 0.33 at the control location. This study establishes that haulage vehicles may contribute significantly to its host airshed degraded air quality thus calls for appropriate regulatory measure to protect commuters plying the major highway around the park.</p>

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Apply Woods Model in the Predictions of Ambient Air Particles and Metallic Elements (Mn, Fe, Zn, Cr, and Cu) at Industrial, Suburban/Coastal, and Residential Sampling Sites

The Scientific World JOURNAL ◽

10.1100/2012/207620 ◽

2012 ◽

Vol 2012 ◽

pp. 1-7 ◽

Cited By ~ 4

Author(s):

Guor-Cheng Fang ◽

Ci-Song Huang

Keyword(s):

Particle Size ◽

Dry Deposition ◽

Thermal Power ◽

Sampling Site ◽

Ambient Air ◽

Deposition Flux ◽

Metallic Elements ◽

Suspended Particulates ◽

Total Suspended Particulates ◽

Central Taiwan

The main purpose for this study was to monitor ambient air particles and metallic elements (Mn, Fe, Zn, Cr, and Cu) in total suspended particulates (TSPs) concentration, dry deposition at three characteristic sampling sites of central Taiwan. Additionally, the calculated/measured dry deposition flux ratios of ambient air particles and metallic elements were calculated with Woods models at these three characteristic sampling sites during years of 2009-2010. As for ambient air particles, the results indicated that the Woods model generated the most accurate dry deposition prediction results when particle size was 18 μm in this study. The results also indicated that the Woods model exhibited better dry deposition prediction performance when the particle size was greater than 10 μm for the ambient air metallic elements in this study. Finally, as for Quan-xing sampling site, the main sources were many industrial factories under process around these regions and were severely polluted areas. In addition, the highest average dry deposition for Mn, Fe, Zn, and Cu species occurred at Bei-shi sampling site, and the main sources were the nearby science park, fossil fuel combustion, and Taichung thermal power plant (TTPP). Additionally, as for He-mei sampling site, the main sources were subjected to traffic mobile emissions.

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Seasonal variation in concentration and metallic constituents of atmospheric particulates near the western coast of central Taiwan

Toxicology and Industrial Health ◽

10.1191/0748233706th262oa ◽

2006 ◽

Vol 22 (5) ◽

pp. 193-201 ◽

Cited By ~ 1

Author(s):

Guor-Cheng Fang ◽

Yuh-Shen Wu ◽

Wen-Jhy Lee ◽

Te-Yen Chou ◽

I-Chen Lin

Keyword(s):

Fine Particles ◽

Western Coast ◽

Metallic Elements ◽

High Concentration ◽

Fine Particulates ◽

Atmospheric Particulates ◽

Suspended Particulates ◽

Total Suspended Particulates ◽

Coarse Particulates ◽

Central Taiwan

In addition to determining the concentration and metallic constituents of particulate matter at Taichung Harbor in central Taiwan, this study attempts to characterize the mass, metallic elements, composition and concentrations of total suspended particulates (TSP), fine particles and coarse particles. Statistical approaches, such as the Spearman tests, were also adopted to determine the seasonal variations of concentrations of these pollutants. Experimental results indicate that the mean TSP, fine particulate and coarse particulate concentrations in spring and winter are higher than in summer and autumn on the western coast of central Taiwan. Spearman statistical analysis of metallic elements Mn and Pb showed high concentration coefficients for fine and coarse particulates on the western coast of central Taiwan. The order of mean metallic concentrations in TSP, coarse particulates and fine particles was Fe-Zn-Mg-Cu-Cr-Mn-Pb in TSP, Fe-Cu-Zn-Mg-Mn-Pb-Cr in coarse particulates and Fe-Cu-Mg-Pb-Zn-Mn-Cr in fine particulates.

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Ambient air metallic elements compositions study in total suspended particulates and dry depositions at Taichung Harbor

Environmental Earth Sciences ◽

10.1007/s12665-015-4442-3 ◽

2015 ◽

Vol 74 (5) ◽

pp. 4163-4170 ◽

Cited By ~ 1

Author(s):

Guor-Cheng Fang ◽

Winn-Jung Huang ◽

Hung-Che Chiang ◽

Yu-Cheng Chen ◽

Yuan-Jie Zhuang

Keyword(s):

Ambient Air ◽

Metallic Elements ◽

Suspended Particulates ◽

Total Suspended Particulates

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Field Study of Metal Oxide Semiconductor Gas Sensors in Temperature Cycled Operation for Selective VOC Monitoring in Indoor Air

Atmosphere ◽

10.3390/atmos12050647 ◽

2021 ◽

Vol 12 (5) ◽

pp. 647

Author(s):

Tobias Baur ◽

Johannes Amann ◽

Caroline Schultealbert ◽

Andreas Schütze

Keyword(s):

Air Quality ◽

Metal Oxide ◽

Gas Sensor ◽

Gas Sensors ◽

Indoor Air ◽

Ambient Air ◽

Quantitative Agreement ◽

Metal Oxide Semiconductor ◽

Oxide Semiconductor ◽

High Temporal Resolution

More and more metal oxide semiconductor (MOS) gas sensors with digital interfaces are entering the market for indoor air quality (IAQ) monitoring. These sensors are intended to measure volatile organic compounds (VOCs) in indoor air, an important air quality factor. However, their standard operating mode often does not make full use of their true capabilities. More sophisticated operation modes, extensive calibration and advanced data evaluation can significantly improve VOC measurements and, furthermore, achieve selective measurements of single gases or at least types of VOCs. This study provides an overview of the potential and limits of MOS gas sensors for IAQ monitoring using temperature cycled operation (TCO), calibration with randomized exposure and data-based models trained with advanced machine learning. After lab calibration, a commercial digital gas sensor with four different gas-sensitive layers was tested in the field over several weeks. In addition to monitoring normal ambient air, release tests were performed with compounds that were included in the lab calibration, but also with additional VOCs. The tests were accompanied by different analytical systems (GC-MS with Tenax sampling, mobile GC-PID and GC-RCP). The results show quantitative agreement between analytical systems and the MOS gas sensor system. The study shows that MOS sensors are highly suitable for determining the overall VOC concentrations with high temporal resolution and, with some restrictions, also for selective measurements of individual components.

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