• The Korean Journal of Ecology
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• v.26 no.3
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• pp.91-96
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• 2003

To monitor the heavy metal exposure conditions of Feral Pigeons Columba livia, we collected them at commercial area, industrial area, park area and resident area in Seoul. In feathers, iron concentrations were significantly different among habitats(ANOVA, p<0.05), and were the highest at park area. Manganese concentrations were relatively higher at industrial and park area than other areas(ANOVA, p<0.05). In case of copper levels were the significantly highest at park area(ANOVA, p<0.05). Zinc, lead and cadmium had no difference among habitats. Correlation between livers and feathers concentrations were highly significant to copper(r²=0.983, p<0.01) and cadmium(r²=0.632, p<0.01), but iron, zinc, manganese and lead were not significantly different.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2000.11a
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• pp.63-64
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• 2000

본 연구는 대전 1,2공단 지역을 대상으로 22개의 원소를 선정하여 ICP-MS를 이용하여 분석한 농도와 도로변 지역인 충남대학교 정문 지역을 대상으로 31개의 원소를 선정하여 NAA를 이용하여 분석한 농도를 가지고 두 가지의 분석방법에서 공통적으로 분석된 원소들을 통해 대전의 대표적인 공단지역과 도로변 지역의 농도를 비교 평가해 보고자 한다. (중략)

• Korean Chemical Engineering Research
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• v.48 no.2
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• pp.268-274
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• 2010

Emission of heavy metals as hazardous air pollutants has been focused with tightening regulatory limits due to their hazardousness. Measurements and characteristic investigations of heavy metals emitted from a commercial power plant burning anthracite coal have been carried out. The plant consists of a circulating fluidized bed combustor, a cyclone, a boiler and an electrostatic precipitator(ESP) in series. Dust and gaseous samples were collected to measure main heavy metals including gaseous mercury before ESP and at stack. Dust emissions as total particulate matter (TPM), PM-10 and PM-2.5 at inlet of ESP were very high with 23,274, 9,555 and $7,790mg/Sm^3$, respectively, as expected, which is much higher than those from pulverized coal power plants. However TPM at stack was less than $0.16mg/Sm^3$, due to high dust removal efficiency by ESP. Similarly heavy metals emission showed high collection efficiency across ESP. From particle size distribution and metal enrichment in sizes, several metal concentrations could be correlated with particle size showing more enrichment in smaller particles. Mercury unlike other solid metals behaved differently by emitting as gaseous state due to high volatility. Removal of mercury was quite less than other metals due to it's volatility, which was 68% only. Across ESP, speciation change of mercury from elemental to oxidized was clearly shown so that elemental mercury was half of total mercury at stack unlike other coal power plants which equipped wet a scrubber.

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 2004.09a
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• pp.403-405
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• 2004

일반적으로 폐광산 지역에 방치되어 있는 광미와 오염토양에 함유된 중금속원소는 자연 상태에서 물리ㆍ화학적 환경의 변화에 따라 자연정화 되거나, 또는 재용출되어 점 또는 비점오염원으로의 역할을 하기 때문에 광미와 오염된 토양에 존재하는 중금속의 존재형태를 규명 또는 예측하는 것은 매우 중요하다. 이에 따른 중금속의 오염평가와 존재형태를 규명하기 위해 서성 연ㆍ아연 폐광산 주변 경작토를 대상으로 Tessier et at. (1979)가 제시한 연속추출을 실시하였다. 그 결과는 As와 Cr이 잔류형태가 우세하여 안정한 상태로 존재하는 것으로 평가되었으며, 이에 반하여 Zn, Pb, Cu, Cd, Ni 및 Mn 등은 상대적으로 존재형태가 불안정한 것으로 평가되었다. 특히, As는 모두가 잔류형태로만 존재하는 것이 확인되어 As의 오염이 야기되지 않는 것으로 밝혀졌다.

• Journal of the Korean Society of Groundwater Environment
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• v.1 no.2
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• pp.80-84
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• 1994

The objective of this study was to find out the relationships between the vertical distribution of heavy metals in paddy soils and some soil characteristics. One hundred eight soil samples were collected by soil depths from 27 points of paddy fields in the vicinity of lead-zinc mining sites, and heavy metal contents and the physico-chemical characteristics of the soils were analysed. The results obtained were summarized as follows; 1) Distribution of heavy metals (Cd, Cu, Pb, Zn and As) by soil depths were ranged 42-51% in 0- 15 cm, 21-29% in 15- 30 cm, 12- 17% in 30-60 cm and 11-14% in 6o-100 cm. 2) The distribution of As by soil depth showed clear difference between sandy loam and loam, while that of Cd, Cu, Pb and Zn did not show any difference between these textures. 3) Distribution of Cd, Cu, Pb, Zn and As by different soil depths showed significantly negative correlation with soil pH value but they showed significantly positive correlation with soil organic matter content. 4) Cadmium, copper, lead, and zinc in soil had tendency to be highly correlated in each soil depth. Especially, high correlation was shown at the depth of 0- 15 cm, 30-60 cm and 60-100 cm for Pb and Zn, and 0-15 cm for Cd and Zn. Arsenic in soil was not correlated with these heavy metals.

• Biomedical Science Letters
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• v.3 no.1
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• pp.37-42
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• 1997

The concentrations in women's hair of essential and toxic elements such as Zn, Ni, Fe, Mn, Cu, Cr, Pb and Cd in residential and factory areas in Pusan were determined, and all the elements were detected from all the samples. It was apparent that employees working in factory areas in Pusan were exposed directly to the essential and toxic heavy matals. This is based on the fact that average concentrations of Ni, Fe, Mn, Cu, Cr, Pb, and Cd in hair samples from women aged 10 to 29 in factory area, who were considered to be main members among women employees, were much higher than those of residential areas. That is, the highest concentrations found in the hair samples taken from women 10 to 29 years old living in factory areas were 110 times higher in Cr (in the women in their 20's), 92 times higher in Pb (in the women in their teens) and 23 times higher in Cd (in the women in their 20's) than those living in residential areas. Furthermore, it was suggested that the heavy metals may be accumulated gradually in human bodies as humans get older, based on the fact that the concentrations of Cr, Pb, and Cd in women living in residential areas were higher in older age groups, although the average contents of these elements in residents from residential areas were similar with those of several foreign countries.

• Economic and Environmental Geology
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• v.35 no.4
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• pp.347-353
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• 2002

Dominant rock types of stones used presently for cooking utensils in Korea are pyroxenite, breccia and biotite diorite. Pyroxenite and biotite diorite relatively abundant in mafic minerals have higher specific gravities of 3.0 than breccia of 2.5. Breccia shows the highest absorption (2.9%) among three stones used as cooking utensils and pH value of three stone types shows the alkaline range of 9.7 to 9.9. Among the studied stones used for cooking utensils, biotite diorite is the most durable against abrasion and has the highest strength and therefore, it is expected to be used effectively for the longest time except for other specific causes. Heavy metals such as Cu, Pb, Co, Cr and Ni were leached lower than their detection limit (0.1 ppm) regardless of reaction time and initial pH value of solution. But the leached contents of Fe are various with rock types and leaching conditions and those by acidic solution are generally 1.8 to 31 times higher than those by neutral solution. Breccia and biotite diorite show the highest leached content of Fe in cases of neutral and acidic solutions, respectively. Standard criteria of leached heavy metals and macrominerals should be studied thoroughly to utilize stones for cooking utensils of high quality which are harmless to the human body. Also it is required to examine mon detailed abiochemical properties of various stone types used for cooking utensils.

• Journal of the Korean Society of Marine Environment & Safety
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• v.14 no.4
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• pp.247-256
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• 2008

For the systematic scientific management of tidal flat sediment in Julpo bay of Korea, this study conducted a survey of particle composition, organic matter(l.L) and heavy metals for three lines ; including F, R and L lines in tidal flat sediment. Particle composition of tidal flat sediments consisted predominantly of clay at F line which was in right angle direction to the coast, whereas R and L lines were located horizontally along the coast and consisted predominantly of silt. Mean grain size values of tidal flat sediments were in the range of 3.7 ${\phi}{\sim}$10.4 ${\phi}$(average 7${\phi}$). The contents of heavy metals observed at R and L lines were lower than those at F line. The correlation analysis among heavy metals, organic matter and particle size was found to have a good interrelationship. For the evaluation of heavy metals pollution, two criteria of US NOAA and KEI(in Korea) were applied Heavy metals pollution level of tidal flat sediments belonged in Non polluted and Moderately polluted groups in US EPA criteria, and its pollution levels sat below ERL in NOAA criteria. The results of heavy metals pollution level obtained by KEI criteria were found to be less than the goal level.

• The Korean Journal of Quaternary Research
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• v.22 no.1
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• pp.1-12
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• 2008

We investigated metal concentrations and oceanic environment changes that have occurred over the past several years by studying the hard coral Porites lutea, which inhabits tropical and subtropical areas. Soft X-radiographs clearly showed distinctive annual bands within 71 mm coral sample, which reflect changes in the oceanic environment over this period. There were large fluctuations in the major and minor element concentrations. Considering the physicochemical partition coefficient, some elements accumulated in the aragonite matrix in a mechanical manner, while others were affected by environmental factors. The concentrations of some heavy metals varied over a wide range, implying local environmental effects. The variation of Sr/Ca and Mg/Ca in coral skeleton clearly showed large-scale fluctuation over the specific intervals, implying environmental changes during this period. The concentrations of heavy metals also show high fluctuations, and roughly accord with Mg/Ca variation. In addition, Cu and Zn seem to show cyclicity-like peaks, coincide with Mg/Ca variation over the specific intervals. Such variation might be related to local pollution and oceanographic changes. More detailed investigation is necessary, including the pretreatment of coral skeleton sediment.

• Korean Journal of Plant Resources
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• v.18 no.2
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• pp.251-259
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• 2005

Three different floras(M. sinsinsis, A. vulgaris, Robinia pseudo-acacia) were collected from the granite(GR) and coal bearing shale area(CB) and analysed for their heavy metal elements with the representative soils. Regardless of the flora species, the CB were high in average contents. Among the correlation relationships, the CB were more distinctive than the GR, and the A. vulgaris showed higher correlations than the M. sinsinsis. In the same soils, the A. vutgaris showed high contents than the M. sinsinsis and Robinia pseudo-acacia, and the M. sinsinsis were high relative to the Robinia pseudo-acacia. In the comparisons of the flora, root parts were high in most of the elements except for Zn. In the soils, the CB were high in most of elements while As and Mo showed different contents between the GR and CB. In the comparison between soil and flora, soils of the GR were high in the V and Sc contents and low in Zn and Cu, while those of the CR were high in the Cr, V and Sc contents, and low in the Zn contents, Comparing with the soil contents, the M, sinsinsis in the GR were similar to Co and V contents while, in the CB, the M. sinsinsis were similar to the Ni, Cr, Co, Zn, Mo contents, and the Robinia pseudo-acacia were similar to the Ni, Zn, Cu contents. Overall results suggested that the M. sinsinsis and A. vulgaris should be eligible for the bioremediation of the soils polluted by heavy metal such as the CB.