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수동형 FTIR 원격화학 탐지기를 이용한 SF6 오염운의 실시간 탐지
정유진,박병황,김주현 한국군사과학기술학회 2014 한국군사과학기술학회지 Vol.17 No.1
Brightness temperature spectra acquired from FTIR(Fourier Transform Infrared)-SCADS (Standoff Chemical AgentDetection System) could be available for detection and identification of the chemical agents and pollutants fromdifferent background. IR spectrum range of 770 to 1350 cm-1 is corresponding to “atmospheric window”. A2-dimensional(2D) brightness temperature spectrum was drawn from combining each data point through automaticcontinuous scanning of FTIR along with altitude and azimuth. At higher altitude, temperature of background wasdecreased but scattering effect of atmospheric gases was increased. Increase in temperature difference betweenbackground and blackbody in SCADS at higher temperature causes to increases in peak intensity of SF6. Thisapproach shows us a possibility that 2D visual information is acquired from scanning data with a single FTIRSCADS.
강영일,박병황,최명진,홍대식,최수,김동환,박도현,Kang, Young-Il,Park, Byeong-Hwang,Choi, Myung-Jin,Hong, Dea-Sik,Choi, Soo,Kim, Dong-Hwan,Park, Do-Hyun 한국군사과학기술학회 2011 한국군사과학기술학회지 Vol.14 No.2
The passive open-path Fourier-Transform-Infrared system was implemented for the toxic gas monitoring. Noise Equivalent Differential Temperature(NEDT) was investigated as a system performance evaluation figure and analyzed numerically with the designed parameters. Calculated NEDT was compared with the experimental value in the wavelength region of $700{\sim}1400cm^{-1}^$. The minimum detectable gas concentration was estimated from the obtained NEDT at the absorption wavelength of $SF_6$.
수동형 FTIR 원격화학 탐지기를 이용한 SF<sub>6</sub> 오염운의 실시간 탐지
정유진,박병황,김주현,Chong, Eugene,Park, Byeonghwang,Kim, Ju Hyun 한국군사과학기술학회 2014 한국군사과학기술학회지 Vol.17 No.1
Brightness temperature spectra acquired from FTIR(Fourier Transform Infrared)-SCADS (Standoff Chemical Agent Detection System) could be available for detection and identification of the chemical agents and pollutants from different background. IR spectrum range of 770 to 1350 $cm^{-1}$ is corresponding to "atmospheric window". A 2-dimensional(2D) brightness temperature spectrum was drawn from combining each data point through automatic continuous scanning of FTIR along with altitude and azimuth. At higher altitude, temperature of background was decreased but scattering effect of atmospheric gases was increased. Increase in temperature difference between background and blackbody in SCADS at higher temperature causes to increases in peak intensity of $SF_6$. This approach shows us a possibility that 2D visual information is acquired from scanning data with a single FTIR-SCADS.
열분해 질량분석법을 이용한 생물학 물질의 특성 연구(II)
최선경,박영규,박병황,Choi, Sun-Kyung,Park, Young-Kyu,Park, Byeng-Hwang 한국군사과학기술학회 2005 한국군사과학기술학회지 Vol.8 No.3
Pyrolysis-mass spectrometry has been used to characterize the 17 biological materials including bacteria and proteins. In this study, an in situ thermal-hydrolysis methylation(THM) procedure using tetramethylammonium hydroxide(TMAH) was employed. The biological materials are ionized using chemical ionization(CI) method with ethanol by ion trap mass spectrometer(ITMS), which attached with our own made pyrolyzer module, and then their pyrolysis mass spectra were obtained. The major distinct characteristic peaks were selected from all the range of mass spectra, and analyzed using principal component analysis(PCA) method to assess the classification/identification possibility of biological materials.
LC/MS법 및 LC/UVD(EPA-631)를 이용한 수계 중 Benomyl의 분석법 평가
김기동,최원규,서용찬,박병황,최혜경,Kim, Kee D.,Choi, Won Gyu,Seo, Yong Chan,Park, Byung Hwang,Choi, Hye Kyung 대한화학회 2001 대한화학회지 Vol.45 No.1
내분비계 장애물질 중의 하나인 농약 benomyl의 환경잔류실태를 조사하기 위해 수질중의 benomyl 농도를 정량 하였다. 일반적으로 benomyl은 가수분해하여 carbendazim으로 변하며 본 분석법은 carbendazim을 정량 하는 간접법이다. 수질중의 잔여 benomyl은 가수분??후 적절한 용매로 추출하여 농축, 정제되었다. 농축된 시료의 carbendazim 농도를 LC/MS (TOF)로 분석하였으며 그 결과 방해물질에 의해 발생할 수 있는 오차를 제거할 수 있었다. 검출한계는 LC/UVD법(EPA-631)에 비하여 약 1,600배 낮았으며 spike의 회수율도 약 80~118%로 양호하였다. Benomyl, one of the known endocrine disrupting chemicals, was analyzed to understand the its fate in water. Benomyl analysis process in water sample include the following sequential steps. Hydrolysis of benomyl into carbendazim, solvent extraction, concentration, and the concentration of final carbendazim solution was determined by LC/MS (TOF). Recoveries of the spiked samples were good with the range of 80.6 to 118.6% and the MDL was 1,600 times lower than that of LC/UVD method. The use of LC/MS (TOF) successfully eliminated the positive error incurred by interferencing materials in the matrix.