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자외선에너지를 ( UV - C ) 이용한 유기인계 화합물의 분해
김종향,민병철 ( Jong Hyang Kim,Byoung Chul Min ) 한국공업화학회 1998 공업화학 Vol.9 No.1
두 종류의 유기인계 살충제인 디클로로보스와 클로로피리포스를 UV조사, UV조사와 TiO₂ 분말 그리고 UV조사와 sea sand를 저압수은 램프를 이용하여 분해실험을 하였다. 이 화합물의 확인은 가스크로마토그래프, 총유기탄소 그리고 이온크로마토그래프를 사용하였다. 두 물질 모두, UV조사와 sea sand가 UV 조사와 UV조사와 TiO₂분말보다 분해가 더 잘 되었다. 반응 최종생성물은 디플로르보스에서는 Cl^-,클로로피리포스에서는 Cl^- SO₄^(2-) 등이 생성되었다. Two organophosphorous insecticides, Dichlorovos and Chloropyrifos were degraded in the presence of UV irradiation, UV irradiation with TiO₂ powder and UV irradiation with sea sand using low pressure mercury lamp. The identification of these compounds was carried out by gas chromatograph with a nitrogen-phosphorous detector, Total Organic Carbon and Ion Chromatograph, respectively. Both dichlorvos and chloropyrifos, UV irradiation with sea sand were more degradable than UV irradiation and UV irradiation with TiO₂ powder. The final products were Cl^- in Dichlorvos, Cl^- SO₄^(2-) in Chloropyrifos, respectively.
TiO<sub>2</sub> 고정화 지지체를 이용한 Chlorothalonil의 광촉매분해
김종향,남춘동,김병관,Kim, Jong-Hyang,Nam, Chon-Dong,Kim, Byung-Kwan 한국공업화학회 1996 공업화학 Vol.7 No.4
$TiO_2$ 고정화 물질은 Titanium tetraisopropoxide-isopropanol 용액에 제오라이트와 glass filter를 담지한 후, 이것을 공기중에 건조시켜 $500^{\circ}C$에서 소결하여 얻었다. Chlorothalnoil의 분석은 ECD가 부착된 가스크로마토그래피로 분석하였다. Chlorothalnoil에 대한 분해효율은 $TiO_2$로 지지된 광촉매가 효과적이었고, 3시간 후 완전히 분해되었다. 반응 생성물들은 $TiO_2$로 지지된 제오라이트에서는 $Cl^-$가 5.0ppm, $TiO_2$로 지지된 glass filter에서는 $Cl^-$가 7.5ppm,그리고 $TiO_2$ 분말에서는 $Cl^-$가 2.0ppm 각각 생성되었다. 그러나, $CN^-$는 지지체의 종류에 관계없이 검출한계이하였다. $TiO_2$ was dispersed in zeolite and glass filter by soaking them in isopropanol solution of titanium tetraisopropoxide and drying in the air, followed by calcination at $500^{\circ}C$. The analysis of chlorothalnoil was carried out by gas chromatograph with an electron capture detector. Chlorothalnoil was degraded photocatalytically over the matrix-supported $TiO_2$ efficiently and could be completely photodegraded after 3hrs. Production were 5.0ppm of $Cl^-$ for $TiO_2$ supported zeolite, 7.5ppm of $Cl^-$ for $TiO_2$ supported glass filter and 2.0ppm of $Cl^-$ for $TiO_2$ powder. But, $CN^-$ was lower than the detection limit irrespective of matrices.
TiO2 고정화 지지체를 이용한 Chlorothalonil 의 광촉매분해
김종향,남춘동,김병관 ( Jong Hyang Kim,Chun Dong Nam,Byung Kwan Kim ) 한국공업화학회 1996 공업화학 Vol.7 No.4
TiO₂ 고정화 물질은 Titanium tetraisopropoxide-isopropanol 용액에 제오라이트와 glass filter를 담지한 후, 이것을 공기중에 건조시켜 500℃에서 소결하여 얻었다. Chlorothalnoil 분석은 ECD가 부착된 가스크로마토그래피로 분석하였다. Chlorothalnoil에 대한 분해효율은 TiO₂로 지지된 광촉매가 효과적이었고, 3시간 후 완전히 분해되었다. 반응생성물들은 TiO₂로 지지된 제오라이트에서는 Cl^-가 5.0ppm, TiO₂로 지지된 glass filter에서는 Cl^-가 7.5ppm,그리고 TiO₂분말에서는 Cl^-가 2.Oppm 각각 생성되었다. 그러나, CN^-는 지지체의 종류에 관계없이 검출한계이하였다. TiO₂ was dispersed in zeolite and glass filter by soaking them in isopropanol solution of titanium tetraisopropoxide and drying in the air, followed by calcination at 500℃. The analysis of chlorothalnoil was carried out by gas chromatograph with an electron capture detector. Chlorothalnoil was degraded photocatalytically over the matrix-supported TiO₂efficiently and could be completely photodegraded after 3hrs. Production were 5.0ppm of Cl^- for TiO₂ supported zeolite, 7.5ppm of Cl- for TiO₂ supported glass filter and 2.0ppm of Cl^- for TiO₂ powder. But, CN^- was lower than the detection limit irrespective of matrices.
토양 중 미규제된 유기오염물질 분석연구 -다환방향족탄화수소 16종을 중심으로-
김종향 ( Jong Hyang Kim ),강종민 ( Jong Min Gang ),이방희 ( Bang Hee Lee ),허종수 ( Jong Sou Her ) 한국유화학회 2011 한국응용과학기술학회지 Vol.28 No.1
The aim of study was to investigate polluted amounts 16 PAHs in railroad(waste railway ties) area, factory area and land-fill area. All of the samples were analyzed by GC-MSD(SIM mode), and the recovery range, detection limit and standard deviation obtained by this experiment were 73.88~94.75%, 0.009~2.252 ㎍/kg and 1.861~12.373, respectively. The concentrations of total PAHs(t-PAHs) and total carcinogenic PAHs(t-PAHcarc) in soils of three area were in the range of 12.54~3274.95 ㎍/kg on a wet weight basis with a mean value of 499.8 ㎍/kg and 0~122.77 ㎍/kg with a mean value of 20.16 ㎍/kg, respectively. The correlation between t-PAHs and t-PAHcarc appeared very high in railroad(waste railway ties) area (R2=0.8301), factory area (R2=0.9217) except land-fill area(R2=0.3782), indicated that t-PAHcarc concentration increases in proportion with t-PAHs.