Reduction of air contamination in the sinter shop

Metallurgist ◽  
1964 ◽  
Vol 8 (1) ◽  
pp. 16-17
Author(s):  
B. G. Novikov ◽  
R. S. Bernshtein ◽  
V. N. Bytkin
Keyword(s):  
Air Contamination ◽  
Sinter Shop

Comparison of two air sampling methods to monitor operating room air quality and assessment of air quality in two operating rooms with different ventilation systems in the national hospital of Sri Lanka

2016 ◽  
Vol 12 (3) ◽  
Author(s):  
Tshokey Tshokey ◽  
Pranitha Somaratne ◽  
Suneth Agampodi
Keyword(s):  
Air Quality ◽  
Sri Lanka ◽  
Operating Room ◽  
Ventilation System ◽  
Surgical Site Infections ◽  
National Hospital ◽  
Air Contamination ◽  
Acceptable Method ◽  
The Difference ◽  
Laminar Air Flow

Air contamination in the operating room (OR) is an important contributor for surgical site infections. Air quality should be assessed during microbiological commissioning of new ORs and as required thereafter. Despite many modern methods of sampling air, developing countries mostly depended on conventional methods. This was studied in two ORs of the National Hospital of Sri Lanka (NHSL) with different ventilation system; a conventional ventilation (CV) and a laminar air flow (LAF). Both ORs were sampled simultaneously by two different methods, the settle plate and sampler when empty and during use for a defined time period. Laboratory work was done in the Medical Research Institute. The two methods of sampling showed moderate but highly significant correlation. The OR with CV was significantly more contaminated than LAF when empty as well as during use by both methods. Overall, the difference in contamination was more significant when sampled by the sampler. Differences in contamination in empty and in-use ORs were significant in both ORs, but significance is less in LAF rooms. The consistent and significant correlation between settle plate and sampler showed that the settle plate is an acceptable method. The LAF theatre showed less contamination while empty and during use as expected. Air contamination differences were more significant when sampled with sampler indicating that it is a more sensitive method. Both CV and LAF ORs of the NHSL did not meet the contamination standards for empty theatres but met the standards for in-use indicating that the theatre etiquette was acceptable.

scholarly journals Assessment of Indoor Benzene and Its Alkyl Derivatives Concentrations in Offices Belonging to University of Technology (Poland)

Atmosphere ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 51
Author(s):  
Barbara Kozielska ◽  
Dorota Kaleta
Keyword(s):  
Dominant Role ◽  
Average Concentration ◽  
Air Contamination ◽  
Flame Ionization ◽  
Indoor Sources ◽  
Alkyl Derivatives ◽  
University Of Technology ◽  
Low Concentrations ◽  
Office Rooms ◽  
Indoor And Outdoor

Indoor air contamination in office rooms is regarded as one of the most important issues in the protection of workers’ health, because contaminants, even those occurring at low concentrations, can cause health problems for the office staff in view of the long exposure time. This paper presents the results of measurements of benzene and its alkyl derivatives (toluene, ethylbenzene, xylenes, styrene, and 1,3,5-trimethylbenzene)—known indicators of human exposure to volatile organic compounds (VOCs) in the air in newly renovated offices at University of Technology (Upper Silesia, Poland). Monthly samples of indoor and outdoor air were collected during the years 2018–2019 by passive methods and analyzed by thermal desorption-gas chromatography with flame ionization detector (TD-GC/FID). In the first month of measurements average concentrations of the sum of five VOCs under consideration was 127.7 µg/m3, then in subsequent months between 15.1 µg/m3 to 87.3 µg/m3. The average concentration of carcinogenic benzene was below 1.5 μg/m3. Toluene had the highest concentration among studied VOCs, accounting for as high as 60% and 84% of the total indoor and outdoor VOCs, respectively. High indoor-to-outdoor (I/O) ratios for ethylbenzene (7.1), m,p-xylene (9.8), and styrene (12.5) indicate the dominant role of indoor sources.

scholarly journals Airworthiness Requirements and Means of Compliance about the Bleed Air Contamination

2014 ◽  
Vol 80 ◽  
pp. 592-601
Author(s):  
Peng Ke ◽  
Chunpin Sun ◽  
Shuguang Zhang
Keyword(s):  
Air Contamination

scholarly journals Air contamination of households versus hospital inpatient rooms occupied by SARS-CoV-2 positive patients

2021 ◽  
pp. 1-14
Author(s):  
L. Silvia Munoz-Price ◽  
Frida Rivera ◽  
Nathan Ledeboer
Keyword(s):  
Hospital Inpatient ◽  
Air Samples ◽  
Air Contamination ◽  
Air Sampler

Abstract Households are settings with some of the highest COVID-19 secondary-attack-rates. We compared the air contamination in hospital rooms versus households of COVID-19 patients. Inpatient air-samples were only positive at 0.3 meters from patients. Household air samples were positive even without a COVID-19 patient in the proximity to the air sampler.

A Simple DSA Method to Detect Air Contamination During CO2 Venous Studies

2006 ◽  
Vol 29 (4) ◽  
pp. 642-645 ◽  
Author(s):  
Kyung J. Cho ◽  
David R. Cho ◽  
Irvin F. Hawkins
Keyword(s):  
Air Contamination

scholarly journals AMBIENT AIR CONTAMINATION IN A DENTAL OUTPATIENT THEATRE

1979 ◽  
Vol 51 (9) ◽  
pp. 845-855 ◽  
Author(s):  
J.M. THOMPSON ◽  
R.S. BARRATT ◽  
P. HUTTON ◽  
J.S. ROBINSON ◽  
R. BELCHER ◽  
...  
Keyword(s):  
Ambient Air ◽  
Air Contamination

Methods to prevent transport contamination in cities

2021 ◽  
Keyword(s):  
Greenhouse Effect ◽  
Small Towns ◽  
Metropolitan Regions ◽  
Air Contamination ◽  
Traffic Jam ◽  
Traffic Jams ◽  
Ecological Protection

The purpose of this article is to estimate the influence of transportation associated contamination on the operation of metropolitan regions. The results gathered will allow considering the most efficacious solutions that give guidance for the evolution of small towns toward ecological protection and optimisation of the degree and form of transportation to decrease the issue of traffic jams. Keywords transport, air contamination, environment, greenhouse effect, traffic jam

Biological Air Contamination in Elderly Care Centers: Geria Project

2014 ◽  
Vol 77 (14-16) ◽  
pp. 944-958 ◽  
Author(s):  
Lívia Aguiar ◽  
Ana Mendes ◽  
Cristiana Pereira ◽  
Paula Neves ◽  
Diana Mendes ◽  
...  
Keyword(s):  
Elderly Care ◽  
Air Contamination
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