organiccompounds in this area. ... odorous compounds and GC-MSD was used for VOCs. ... Hydrogen sulfide, trimethylamine and acetaldehyde were main detected species the odorous compounds.
volatile organic compounds were the highest in elementary schools (210.79㎍/m<sup>3</sup> ... As the results of the survey on the indoor air quality, volatile organic compounds were higher in normal ... pollutants in the normal classrooms and special classrooms of 132 elementary, middle, and high schools
Activated carbon fiber (ACF) filters are widely used to remove volatile organic compounds (VOCs) in ... Benzene, toluene, and m-xylene (BTX) were chosen as target compounds. ... air cleaning devices.
Activated carbon (AC) was used as an adsorbent for removal of volatile organic compounds (VOCs). ... The physicalchemical properties of activated carbons were characterized by N2 adsorption-desorption isotherms ... In addition, the toluene adsorption amount by activated carbon increased with the concentration of H2SO4
이러한 결과는 현장 조건에서 채취방식의 중요성을 확인해 주었다 For the collection of volatile organic compounds (VOC) in air matrix ... The largest difference was observed from volatile fatty acid (VFA) group with percent difference (PD) ... To compare the recovery rate of VOC in each sampling method, both methods were applied concurrently when
Levels of volatile organic compounds (phenols and indoles) and volatile fatty acids were analyzed by ... to reducing odorous compounds in pig slurry. ... This study investigates the effect of fermentable carbohydrate on the concentration of odorous compounds
Secondary air pollution can be caused by aerosol formation through reactions of ozone and volatileorganic ... compounds (VOCs) emitted from household products used in the indoor environment. ... Injected ozone concentrations of 50, 100, and 200 ppb generated particle mass concentrations, corrected
for the volatile organic compounds were 6.9±6.7㎍ /m3 (benzene), 39.3±55.1㎍/m3 (toluene), 4.2±4.0㎍/m3 ... The pooled concentrations for the critical air pollutants in the house were 13.93±13.91㎍/m3 (PM10), 680 ... Based on this comparative study, we estimated the unit health risk on indoor environment.
were detected as main volatile organic compounds in this area. ... odorous compounds and GC-MSD was used for VOCs. ... Hydrogen sulfide, trimethylamine and acetaldehyde were main detected species the odorous compounds.
organs) Petroleum complex mixture Aliphatic, alicyclic aromatics smaller portion of non-HC compounds ... fertilizer Mixing of Inorganiccompounds Biodegradation of crude oil in sea water main components Native ... compounds Produced by chlorination of biphenyl (18 to 79% of Cl ) Mono, di, tri, tetra, penta , hexa
기상환경과 공기질 보전초미세분진의 PM-2.5와 오존(ozone)의 O3와 휘발성 유기화합물 (VOCs: volatile organic compounds) 및 질소산화물(NOx) 등의 ... [요론]저-코스트의 공기질 측정 센서를 이용해 기상환경 공기질 모니터링, 지역사회 미기상환 경 공기질 모니터링, 시민사회적 뜨거운 쟁점에 대한 스크리닝(screening), 정성적・
Volatile organic compounds(VOCs) detected frequently in the indoor air of child-care centers causes ... In this study, the distributions of carcinogenic VOCs detected in child-care centers were characterized ... to chloroform.
wastes Nature of organiccompounds Abundant in environment Mainly HC Structure: Straight or branched ... Sewage organic waste in high quantity Hard to degrade Odorous gas volatile substances Harmful microbes ... Organic matter decomposition forms Dark Color soil organic mattof inter-monomeric bonds by anaerobic
Volatile organic compounds (VOCs) are considered as one of the main air pollutants, and legislation ... A modified adsorption system (MAS) has been suggested for the control low concentrations and high flow ... (catalytic or thermal) or recovery.
The purpose of this project is to develop the VOCs (the Volatile Organic Compounds) controlling process ... In spite of that fact, we all know BTX (insoluble organiccompounds) has lower absorption efficiency. ... One is in a Laboratory scale and the other is in Pilot Plant scale.
is dissolved, but dissolves the compound more readily. ... off the more volatile solvent. ... solution in a separatory funnel with a second solvent that is immiscible with the one in which the compound