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중성자 방사화 분석법을 이용한 대전공단지역의 미량금속의 특성
구부미,임종명,이진홍 忠南大學校 環境問題硏究所 2001 環境硏究 Vol.19 No.-
This study focused on the quantitative analysis of about 30 trce metals including toxic ones for Daejeon industrial complex area. Sampling period was about 10 months, and PM 10 was collected on Whatman 41 cellulose filter by a high-volume air sampler. Then, PM 10 samples were analyzed by NAA. The following results were summarized from this study: (1) the mean concentration of PM 10 was 86.3㎍/㎥, and the seasonal concentrations of PM 10 and metals were minimum in summer; (2) the concentrations of soul related and sea salt metals, that is, Cl, ,Fe, Al, K, Ca, and Mg were to be much higher; (3) the results of enrichment factor analysis indicated As, Br, I, Cl, Se and Sb to be enriched in PM 10 Samples of our study site; (4) the result of factor analysis by SPSS showed that 84% of total variance was well explained, and communality of almost every metal was greater than about 0.8.
기기중성자 방사화분석법을 이용한 도로변 대기중 미량금속의 농도
임종명,구부미,장미숙,이진홍 충남대학교 환경문제연구소 2000 環境硏究 Vol.18 No.-
There has been a limited number of data for the long-term concentrations of heavy metals within airborne particulates in Korea. Especially, there exist no such data sets for ambient particulates at the roadside that they should have been produced by using INAA. Therefore, this study focuses on the quantitive analysis of about 30 trace metals including toxic ones for roadside airborne particulates. The study also concentrates on the interpretation of analyzed results for the ambient particulates. From the results of the quantitative analysis for airborne particulates at the roadside by INAA, it is shown that the concentrations of metals such as Al, Ca, Cl, Fe, K, Mg and Na due to crust and marine aerosols are much higher than those of other metals. The concentrations of human carcinogen, arsenic and chromium are 6.71±0.85 ng/m3 and 5.95±0.41 ng/m3, respectively while that of non-carcinogenic toxic metal Mn is 34.08±3.62 ng/m3. During yellow sandy season the concentrations of metals such as Al, Na, Mg, Ca, Fe and K show up to twelve times higher than those in summer. INAA has very low detection limits and needs very small amount of airborne particulate sample for the analysis. However, it is difficult to analyze metals such as Pb, Ni, Cd, and Si, which are very important ones for either risk assessment or receptor modeling. Thus, it is necessary to use other analytical tool like ICP-MS as a complement.
대전 3, 4 공단지역의 대기중 독성금속의 인체 위해도 평가
장미숙,이진흥,임종명,구부미 한국환경영향평가학회 2000 환경영향평가 Vol.9 No.4
The research centers on the health risk assessment of airborne toxic metals in Taejon third and fourth industrial complexes. Total suspended particulates were collected on glass microfibre filters by high volume air samplers. Fifteen toxic metals including 6 carcinogenic metals were analyzed by ICP-MS and ICP-AES after the pre-treatment of mixed acid extraction. The following results were summarized from the research : 1) the concentrations of TSPs were 17.7∼219.6㎍/㎥ while the arithmetic mean concentration was 101.7㎍/㎥; 2) the arithmetic mean concentrations of human carcinogens such as arsenic, hexavalent chromium and nickel subsulfide were 10.22, 6.96 and 6.42 ng/㎥, respectively while those of probable human carcinogens such as beryllium, cadmium and lead were 0.13, 3.41, 97.65 ng/㎥, respectively; 3) the point risk estimate for the inhalation of carcinogenic metals was 1.5 × 10^-4, which was much higher than a risk standard of 10^-5; 4) approximately 93% of the cancer risk were to the inhalation of human carcinogens, arsenic and hexavalent chromium, which should be properly managed in Taejon third and fourth industrial complexes.