간행물
한국냄새환경학회지 KCI 등재 Journal of Korean Society of Odor Research and Engineering
- 발행기관 한국냄새환경학회
- 자료유형 학술지
- 간기 계간
- ISSN 1598-6616 (Print)2287-6731 (Online)
- 수록기간 2002 ~ 2013
- 주제분류 공학 > 환경공학 공학 분류의 다른 간행물
- 십진분류KDC 539DDC 628
권호리스트/논문검색
제5권 제4호 (2006년 12월) 7건
1.
2006.12
구독 인증기관 무료, 개인회원 유료
We investigated dilution ratio values of the threshold limit (DRVTL) and 12 odorous compounds from a number of emission points (stack and process) and boundary areas of 10 chemical industries in the Ban-Woll and Shi-Wha Industrial Complex in Gyeonggi Province. The results of our study suggest that differences in odor emission concentrations are caused by such as factors as : suitability and operational conditions of prevention equipment, suitability hood of process and exhaust ventilation system, differences of raw materials of chemical industry. It was found that trimethylamine and hydrogen sulfide recorded the highest contribution from two types of emission points (stack and process), respectively. Show some actual concentration values here, hydrogen sulfide recorded its maximum values from leather industry, while trimethylamine for hexamine production industry. On the other hand, the results of dimethyl sulfide, dimethyl disulfide and methyl mercaptan were not useful, as their concentrations were not significantly high enough to judge from such respect. In the view-point of dilution ratio values of the threshold limit, the average emission ratio of stack and process from 10 chemical industries was 57, 43%, respectively. Therefore, it is important that the odor emission value from process and stack have to minimize and regulate for management of industrial odor.
4,000원
2.
2006.12
구독 인증기관 무료, 개인회원 유료
The atmospheric aldehyde compounds were sampled by high efficiency diffusion scrubber (HEDS) and analyzed by HPLC. The sampling and analysis process can be automated and performed in real-time by continuous sampling of HEDS. All carbonyl compounds regulated by the odor regulation law can be measured in sub-ppbv level and in real-time by the HEDS-HPLC system.
4,000원
3.
2006.12
구독 인증기관 무료, 개인회원 유료
An analytical method for trimethylamine in ambient air was developed, using headspace gas chromatography with flame ionization detection. Trimethylamine was collected on the acid filter which was impregnated sulfuric aicd in the 47 ㎜ diameter of glass fiber filter. Trimethylamine collected on the acid filter was regenerated in the headspace vial and introduced into the GC analytical column directly. Several parameters such as sample volume, equilibrium temperature and time, and slurry method of filter were optimized to provide maximum detection response. Resolution power also compared according to liquid phase of analytical column. The detection limit of method was 0.13 ppb with 50 L sampling volume. The developed acid filter method is easy to deal with the field sampling and the method was adopted as the standard method for odor analysis in Korea.
4,200원
4.
2006.12
구독 인증기관 무료, 개인회원 유료
Aliphatic amine compounds have very low detectable threshold value concentrations, and especially trimethyl amine is one of the main odor-active compounds in atmospheric environment. Concentration of a large amount (10~100 L) of air sample was needed to detect trace amounts of amine compounds by GC/FTD. Amine compounds in ambient air were absorbed in sulfuric acid solution by using impingers and sampling pump. Some amount of the absorption solution was injected in bubbling bottle which a concentration tube was connected with, and that amine gas which was isolated from bubbling bottle was trapped in a concentration tube dipped in liquid argon under a constant helium flow. A concentration tube was disjoined from the bubbling bottle and was connected to injection port of gas chromatograph. Amine compounds trapped in a concentration tube was introduced into the packed column by thermal desorption after flow rate of carrier gas and detector signal had been stabilized enough. Sampling volume of ambient air was different from place to place in the range of 10~100 L, and flow rate through impingers was 5 L/min. Atmospheric concentrations of trimethyl amine were below 16.0 ppbv in the boundary of business establishment and below 420.0 ppbv at the gas releasing port of business establishment in the industrial area.
4,000원
5.
2006.12
구독 인증기관 무료, 개인회원 유료
The characteristics of odor and VOCs emitted from a sewage treatment plant was investigated to provide the basic informations in the design of odor and VOCs treatment processes. The sewage treatment plant which treated domestic wastewater only and consisted of a flow equalization tank, thicker, and sludge container was selected. Odor and VOCs sampled three times (June - July) at the temperatures ranging from 24℃ to 27℃ were analyzed by GC/MS and GC/FPD. Odors were hydrogen sulfide, dimethylsulfide, ammonia, and styrene. Among them, the main compounds were dimethyldisulfide (14.45~2,340.91 O.U.) and ammonia (18.51~16,520 O.U.). The order of odor dilution ratio and odor unit can be listed as follows : Sludge container ＞ Flow equalization tank ＞ Thicker. The main VOC produced from sewage treatment plant was benzenes, and the others were dichloromethane, toluene, ethylbenzene, m,p-xylene, styrene, 1,2,4,-trimethylbenzene, 1,3-dichlorobenzene, and 1,2-dichlorobenzene. The concentration of toluene of a flow equalization tank, thicker, and sludge container were produced from 70.38 ppb to 103.07 ppb, from 28.18 ppb to 40.35 ppb, and from 67.92 ppb to 180.26 ppb. The producing order of VOC can be listed as follows : Sludge container ＞ Flow equalization tank ＞ Thicker.
4,000원
6.
2006.12
구독 인증기관 무료, 개인회원 유료
Two study were carried out to get basic data to improve the olfactory odor estimation method. The first study was to observe the odor intensity of reagents used to select the panel in Korea and Japan. And the second study was to compare the ratio of successful applicants of panel selection between Korea and Japan. As a results, it was observed that the average odor intensity of panel selection reagents in Korea is 3.8 degree and the one of Japan 1.8 degree. As the ratio of successful applicants of Japan method 88% is higher then the one of Korea mothed 30%, it was estimated that Korea method is more strict than Japan method.
4,000원
7.
2006.12
구독 인증기관 무료, 개인회원 유료
The application of gas sensors for the measurement of environmental odor was investigated. The test chamber systems were consist of three parts, as it were, sample injection, odor sensing and data process parts. Four type of sensors were tested with regard to sensor performance like baseline stability, sensitivity and reproducibility to H₂S, CH₃SH, NH₃, and (CH₃)₃N gases. As the results, two kinds of sensors were content with the circuit conditions used in this study. In addition, the influence of relative humidity to the selected two types sensors was tested. The [mal sensor, which was appeared to be the most stable sensor against relative humidity, was selected, and applied practically to measure the real odor from the manure odor source.
4,000원
