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김정민(Jung Min Kim),황승률(Seung ryul Hwang),조석연(Seog Yeon Cho) 한국위험물학회 2013 한국위험물학회지 Vol.1 No.2
Gas phase chemicals by chemical accident and terror have volatile and reactive characteristics which affect on human health and ecosystem, so it is important to detect and identify the chemicals immediately as soon as possible. Recently a variety of detection methods have been reported including indicator, sensor, spectrophotometer, chromatography, analyzer etc. but it is difficult to find proper detection methods because they have some limitations to detect unstable toxic gas phase chemicals considering selectivity and sensitivity. As it is needed to find out unknown chemicals released to the environment by chemical accident or terror, we would like to propose the rapid and effective detection method for the identification of hazardous chemicals in the gas phase. In this study we introduced detection methods using metal porphyrin complexes. Metal porphyrin complex are prepared on the reverse phase silicagel plate and exposed to gas phase chemicals. Color change was observed in the metal porphyrin complex exposed to acrylic acid, hydrochloric acid, in addition RGB(Red Green Blue) value was calculated to confirm the difference of color change. These results might be caused from the activity of chemicals used in the exposure experiment and could be useful to develop the method for the detection of gas phase chemicals difficult to detect with previously reported methods.
김성범(Sung Bum Kim),안성용(Seung Young Ahn),천광수(Kwang Soo Chun),박춘화(Choon Hwa Park),황승률(Seung Ryul Hwang) 한국위험물학회 2014 한국위험물학회지 Vol.2 No.1
The purpose of this study is to prepare regulation on handling hazardous chemicals, especially commercial activities through internet. Analysis report on distribution of hazardous chemicals, and relevant regulations with case study were conducted to meet this purpose. As results, several items should be applied to regulations as follows; it is necessary to record personal informations about purchaser even small for amount, accredition system is needed for commercial activity through internet, abandon saling to juvinile to prevent from illigal use on purpose.
최종우 ( Jong Woo Choi ),김금희 ( Kum Hee Kim ),황승률 ( Seung Ryul Hwang ),이규승 ( Kyu Seung Lee ) 한국환경농학회 2012 한국환경농학회지 Vol.31 No.3
BACKGROUND: The analysis for the concentration and enantiomeric ratio of OCPs have been performed to confirm the distribution and to emonstrate the pollution characteristics of chiral OCPs in ambient air. METHODS AND RESULTS: In ambient air at coastal and inland sites, concentrations and enantiomer fractions (EFs) of heptachlor (HEPT), eptachlor epoxide (HEPX), trans-chlordane (TC), cis-chlordane (CC), xychlordane (OXY), 2,4`-DDT, 2,4`-DDD with HRGC/HRMS were investigated to understand source and distribution of chiral organochlorine pesticides (OCPs) in ambient air. The mean concentrations of OCPs in ambient air were at the range of 0.027(heptachlor)∼1.279 (4,4`-DDT) pg/m3 and 0.0005 (heptachlor)∼0.1043 ng/g d.w. (TC), respectively, The mean EFs of OCPs in ambient air were at the range of 0.73 (HEPX)∼0.45 (CC). Both preferential depletions of (+) and (-) enantiomer were observed for CC, indicated by EFs either <0.5 or >0.5, while preferential depletions of (-) enantiomer which mean EFs <0.5 were observed for chiral OCPs except TC and MC-5. CONCLUSION: OCPs in ambient air have been distributed from soil, but some of them such as chlordane, DDT etc. might have been introduced by long-range atmospheric transport, considering EFs by chiral analysis and trajectory analysis.