Air pollution

Fox, Donald L.; Jeffries, Harvey E.

doi:10.1021/ac50041a002

Cited by 10 publications

(5 citation statements)

References 64 publications

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“…Lodge (292) has considered the problem of ensuring representative samples of atmospheres. Biennial reviews on air pollution (154) include some references to sampling. Reviews describing sampling of the atmosphere in general (79) and in industrial (335) and urban (273) settings have been prepared.…”

Section: Atmospherementioning

confidence: 99%

Sampling for chemical analysis

Kratochvil¹,

Wallace²,

Taylor³

1984

Anal. Chem.

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As analytical methodology improves and instrumental methods allow, or often require, the use of smaller and smaller analytical test portions, the error in the sampling operations becomes increasingly significant. Also, heterogeneity of trace components can introduce major sampling problems. Sampling errors cannot be controlled by use of blanks, standards, or reference samples and so are best treated independently.

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Section: Atmospherementioning

confidence: 99%

Sampling for chemical analysis

Kratochvil¹,

Wallace²,

Taylor³

1984

Anal. Chem.

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“…This change leads to a rapid rise in the amount of CO2 in public places such as schools, shopping centers and hospitals. At the same time the increase of carbon dioxide ratio in the environment occur some disorders like fatigue, difficulty in detection, drowsiness 3 . Also the CO2 leads to various complaints that cause loss of performance in human body.…”

Section: Introductionmentioning

confidence: 99%

Indoor Air Quality in Hospitals: The Case of Kastamonu- Turkey

2019

jcbsc

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People have been spending their days indoors and the air quality of these areas directly affects the health and performance in living urban areas. Especially in public places, the amount of oxygen decreases due to human respiration in the cramped and slightly ventilated environment. The various health problems occur because of the decrease of indoor air quality (IAQ). Fatigue, difficulty in detection, drowsiness and continuity are usually seen in people. This is an issue, which should be primarily investigated in hospitals. Because the patients and caregivers in the healthcare facility are directly affected by the low air quality in the health institutions. People who are coming or working in hospital for treatment have weak and quite higher risk factor. In this context, the indoor air quality has been investigated particulate matter (PM) and CO2 which is the most important pollutants in terms of human health in some hospitals in Kastamonu. As a result of the study, it is found that IAQ is not enough compared to air quality studies in the areas where hospitals are located, but it is generally not at a level that can threaten health in hospitals. It has also been determined that CO2 is much lower than other public facilities (school, shopping center etc.).

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“…Sulfur dioxide (SO 2 ) is a species which can be adsorbed by the glass fiber filter – and the silica gel – . Once adsorbed, it is subsequently transformed into sulfate in the analytical process that causes an overestimate of sulfuric acid mist concentration .…”

Section: Introductionmentioning

confidence: 99%

Minimization of Artifacts in Sulfuric Acid Mist Measurement Using NIOSH Method 7903

Hsu

Lundgren

et al. 2008

Environ. Sci. Technol.

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NIOSH Method 7903 employs a silica gel tube for sulfuric acid mist measurement in workplaces. However, SO2 gas present in the sample volume can be transformed into sulfate in the sampling process causing an artifact that is reported as sulfuric acid. A sampling train incorporating a honeycomb denuder system was applied for field sampling at seven phosphate fertilizer plants to evaluate its use for reducing the artifact sulfate concentration while preserving the actual sulfuric acid mist concentration. The denuder system was designed to remove SO2 gas before the air entered the silica gel tube and to monitor SO2 concentration at the same time. A deactivation model was also applied to correct for the presence of the artifact. The denuder system had 95.7 ± 6.8% collection efficiency for SO2 gas, and the impact of sulfate aerosol on SO2 collection was negligible. SO2 concentrations at the seven plants ranged from 34 ppb to 5.6 ppm. The honeycomb denuder system and the deactivation model were shown to reduce the artifact sulfate concentration by 70% and 39%, respectively. However, they were still higher than the sulfate aerosol concentration measured by a cascade impactor. One possible reason is the residual sulfate in the glass fiber filter and the silica gel.

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Air pollution

Cited by 10 publications

References 64 publications

Sampling for chemical analysis

Sampling for chemical analysis

Indoor Air Quality in Hospitals: The Case of Kastamonu- Turkey

Minimization of Artifacts in Sulfuric Acid Mist Measurement Using NIOSH Method 7903

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