초록 ▼

연구결과
필요성 및 목표
공산품의 주성분과 첨가물의 분석법 및 동일성 감정기법의 정립과 데이터베이스 구축이 필요함.
○ 자동차 타이어의 열분해 분석법 개발.
○ 착화탄 검출시험법 정립.
○ MTBE에 대한 선택적 흡착제 개발.
방법 및 결과
○ 자동차 타이어의 Single, Muiti-shot 열분해 분석법을 통한 제조회사, 타이어 종류 구별 가능성 검토.
○ 착화탄의 착화제 성분을 SEM-EDX, IC, XRF로 최적의 분석법정립 및 일반재 구분할 수 있는 시험법을 확립.
○ MTB

연구결과
필요성 및 목표
공산품의 주성분과 첨가물의 분석법 및 동일성 감정기법의 정립과 데이터베이스 구축이 필요함.
○ 자동차 타이어의 열분해 분석법 개발.
○ 착화탄 검출시험법 정립.
○ MTBE에 대한 선택적 흡착제 개발.
방법 및 결과
○ 자동차 타이어의 Single, Muiti-shot 열분해 분석법을 통한 제조회사, 타이어 종류 구별 가능성 검토.
○ 착화탄의 착화제 성분을 SEM-EDX, IC, XRF로 최적의 분석법정립 및 일반재 구분할 수 있는 시험법을 확립.
○ MTBE에 선택적인 흡착제 개발과 이를 이용한 정량법 정립.
기대성과
○ 미량의 타이어 성분 분석을 통한 교통사고 여부 판단 가능.
○ 미량의 착화탄 성분 분석을 통한 자.타살, 방화여부 구분.
○ MTBE(methyl-t-butyl ether)에 선택적 흡착제 개발.

Abstract ▼

○ Analysis and identification of tire using pyrolysis GC/MS
Evolved gas analysis-mass spectrometry (EGA-MS) and multi-shot pyrolysis(MS-GC/MS) have been developed to analyze and identify different tires in forensic evidences. Firstly, 23 kinds of commercial tires which produced by Hankook tire, K

○ Analysis and identification of tire using pyrolysis GC/MS
Evolved gas analysis-mass spectrometry (EGA-MS) and multi-shot pyrolysis(MS-GC/MS) have been developed to analyze and identify different tires in forensic evidences. Firstly, 23 kinds of commercial tires which produced by Hankook tire, Kumho tire, Nexen tire, Michelin (France), Bridgestone (Japan) and BFGoodrich (USA) were carried out to compare and identify each EGA-thermogram pattern using evolved gas analysis-mass spectrometry. We took and analyzed 2 kind of samples from each tire, tread and side. Obtained sample was heated by increasing 20 ℃ / min from 100 ℃ to 800 ℃. Secondly, commercial tires were also carried out to analyze and identify each pyrogram using multi-shot pyrolysis gas chromatography/mass spectrometry(MS-GC/MS). Multi-shot pyrolysis carried out with two step of thermal zones with 100 ~ 310 ℃ by increasing 20 ℃ / min respectively and 600 ℃. In case of EGA-MS analysis, it is impossible to compare and identify tires with EGA-thermogram pattern.But in case of MS-GC/MS analysis, they showed different pyrogram especially 600 ℃ of thermal zone B. Also we confirmed the difference between tread and side of tire and we could detect 1,4-benzenediamine N-(1,3-dimethylbutyl)-N’-phenyl which is one of the ingredient in antioxidant processing. According to these results it is expected to be effectively used and applied for toner analysis and identification in forensic evidences using EGA-MS and MS-GC/MS.
○ Analytical technologies for identification and characterization of ignition charcoal
Ignition coal produces carbon monoxide through the burn, so it is used to commit suicide or homicide and set a fire at the crime scene. Identification of usage of Ignition coal is very important to explain the cause of fire or carbon monoxide intoxication under short time period. Also, ignition coal related cases are continuously increased every year.However, the difference of ignition coal and carbonized material was hard to be determined by the conventional method and the guideline or SOP was not well documented. Here, we collected 17 ignition coals, which are commercially available in Korea, and analyzed all samples with SEM-EDX, IC and XRF.
BaNO3 and KNO3 were analyzed by IC after extraction with distilled water. Other analysis was done by solid itself. Also we observed the change of components of ignition coal before and after carbonization. Most of ignition coals have KNO3 and BaNO3 and those are detected before carbonization. But those were not detected with IC but Barium was detected from solid sample after carbonization. Also the result showed the amount of sulfur-compound was increased after carbonization. Further study is necessary to handle the result statistically and to set up the procedure to identify the ignition coal from various sources such as cloth, skin, powder, nose and respiratory tract.
○ Development of MTBE absorbent
To investigate the arson and environmental pollution by gasoline, the adsorbent on MTBE(methyl-t-butyl ether), which is the main ingredient of gasoline, is studied through the thermodynamic experiment for carboxen and inorganic materials of clay and bentonite. Carboxen shows better performance in adsorption than inorganic materials and the adsorption mechanism is shown to be dependent upon temperature.As temperature rises the adsorption the penetration into the micropore which has higher surface energy is thought to be increased and hence this could be applied to the effective adsorption to get optimum condition by controlling temperature and surface modification.