• Journal of Food Hygiene and Safety
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• v.34 no.4
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• pp.325-333
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• 2019

The present study was carried out to identify the distribution characteristics of heavy metals in ginseng and wood-cultivated ginseng reduction of dietary exposure. Samples of ginseng and wood-cultivated ginseng were collected from 14 and 5 regions across Korea, respectively. Lead (Pb), cadmium (Cd) and arsenic (Ar) were detected by ICP-MS after microwave digestion, whereas aluminum (Al) was determined using ICP. Cultivated ginseng peels were 16.2% of whole root, while the peels and fine roots amounted to 21.8% and 16.8% of whole wood-cultivated ginseng, respectively. Taking into account the weight and concentration of the heavy metals by root part, their distribution ratios were calculated and compared. The cultivated ginseng peels contained 40.3% Pb, 25.9% Cd, 47.6% As, and 89.9% Al. Meanwhile, heavy metals consisting of 27.2% Pb, 28.2% Cd, 48.3% As, and 56.8% Al were distributed in the peels of the wood-cultivated ginseng. There was no significant difference between the peels and fine roots of the wood-cultivated ginseng with respect to the distribution proportion of heavy metals, except for Al. These results indicate that the level of dietary exposure to heavy metals could be reduced by peeling ginseng and wood-cultivated ginseng prior to consumption.

• Proceedings of the Korean Environmental Sciences Society Conference
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• 2000.05a
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• pp.219-220
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• 2000

낙동강 유역 퇴적물내 중금속의 존재형태를 Tessier 등의 연속추출법으로 조사해본 결과 퇴적물내 함유된 중금속의 존재형태는 혐기성 환경, pH 및 유기물의 분해 등수환경의 변화에 따라 상이 한 것으로 평가되었다.

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 2006.04a
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• pp.194-197
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• 2006

제주도 대표토양을 대상으로 이들의 모재 및 토양단면의 토양 특성을 조사하고, 제주도 대표토양의 주요 유해 중금속 원소의 총 함량을 분석하여 그 분포특성과 이화학 및 광물학적 특성을 비교 평가하였다. 주성분분석 결과 전형적인 화산회토의 특성을 보이는데 하부 층위에서 Si, Al, Fe 함량의 증가 및 표토에서의 염기용탈을 보여주었다. 현무암질 모재 기원임을 보여주는 ferromagnesian 광물들이 주로 관찰되었으며 심토에서는 상당량의 깁사이트가 관찰되는 것이 특징인데 이는 표토에서 과잉 생성된 알루미늄이 하부토양으로 이동하여 이차적으로 생성집적된 것으로 판단된다. 중금속 총함량 분석결과, Zn, Ni, Co, Cr의 함량이 세계 토양 내 함량범위를 초과하였으며 향후 진행될 연구에서 제주도 화산회 토양의 주 점토구성광물인 알로페인을 비롯한 점토광물 및 비정질 물질에 대한 특성 및 정량적 조사와 중금속원소별 화학적 형태 파악을 위한 연속추출분석 등을 수행하여 중금속원소의 존재상을 규명하고 지표 토양 및 지하수 환경으로의 중금속 이동성을 평가하고자 한다.

• Resources Recycling
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• v.15 no.2 s.70
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• pp.58-68
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• 2006

This study is carried out for the purpose of investigating the property of phosphogypsum, and suggesting the proper recycling system for it. The chemical composition, mineralogical composition, particle size distribution and shape of phosphogypsum were investigated. The size distribution and constitution of impurities, distribution of heavy metals are also investigated. In conclusion, the grade and yield of recoverable phosphogypsum were discussed.

• Proceedings of KOSOMES biannual meeting
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• 2007.05a
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• pp.27-33
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• 2007

Heavy metals in the surface seawaters and sediments were measured in Jinhae Bay. The high concentrations of heavy metals in the seawaters were found at the stations near the islands. In the sea waters, the mean concentrations of dissolved heavy metals except for Pb were not higher than previous data in this bay. Higher heavy metal contents in the surface sediments were observed at the stations adjacent to the Kojedo or Kadukdo of the Kadoksudo. The contents of Co, Ni, Zn, Cu, As and Cd in the surface sediments showed relatively high correlation coefficients with IL and COD. The order of enrichment factors(EFs) of heavy metals in the sediments was As>Cd>Pb>Zn>Co>Cu>Hg>Ni, and the EFs of As, Cd, Pb and Zn were higher than 1.

• The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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• v.23 no.4
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• pp.179-191
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• 2018

In order to determine the distribution characteristics of the heavy metals in surface sediments of the eastern Yellow Sea, heavy metal concentrations (Cu, Pb, Zn, Cd, Cr, Mn, As, Ni, Co, Li, Fe and Al) together with grain size and total organic carbon (TOC), were analyzed. The concentrations of all heavy metals, with the exception of Pb, Mn and As in some stations, were relatively high in the central area of the Yellow Sea and tended to decrease toward the Korean coast. A significant relationship between grain size and concentrations of heavy metals suggested that they were mostly controlled by quartz dilution effect. However, at some stations, Pb, Mn and As exhibited different distribution patterns. For Pb, the differences were caused by petrogenetic influences (feldspar) in coarse-grained sediments. In the case of Mn, biogenetic influences ($CaCO_3$) affected distribution patterns. As was distributed differently because of the existence of a heavy mineral (pyrite). A comparison with previous data (collected in 2000) shows that the heavy metal concentration in the eastern Yellow Sea has not increased over the past fifteen years. The sedimentary environment of dumping sites in the Yellow Sea has not been significantly improved during this period. The results of the pollution assessment revealed that the concentrations of heavy metals in the study area were lower than lower criteria (TEL, MSQ-1) in Korean and Chinese sediment quality guidelines. The enrichment factor (EF), geo-accumulation index ($I_{geo}$) and ecological risk index (ERI) of Cu, Pb, Zn and Cr were higher in the central area of the Yellow Sea.

• Journal of the Korean GEO-environmental Society
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• v.13 no.12
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• pp.59-66
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• 2012

In this study, it was sampling from heavy metal-contaminated soil with the waste in railroad workshop. And, the pollution concentration and analysis of particle-size distribution were conducted to design efficient purification process that it was aimed at high contaminated area, low contaminated area and samples containing waste foundry sand. But, it was the other signs of general soil contamination, as construction waste of waste concrete and waste wood, waste foundry sand, incinerator ash, etc is overall buried on the grounds. Thus, the common heavy metal purification technology has not decreased the pollution. However, heavy-metal contamination was reduced by magnetic separation utilizing the magnetic component of the mixed waste.

• Journal of the Korean Society of Marine Environment & Safety
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• v.23 no.6
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• pp.699-709
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• 2017

We measured the grain size, total organic carbon (TOC), total nitrogen (TN), and heavy metals (As, Cd, Cr, Cu, Fe, Hg, Mn, Pb, and Zn) in order to understand the spatial distribution and pollution level of organic matter and metals in surface sediment around Goseong Bay, a shellfish farming area, Korea. The surface sediments were composed of finer sediments such as mud and clay. The concentration of TOC, TN, and heavy metals were much higher in the innermost bay than in the mouth and outside of bay. The spatial distribution of organic matter and heavy metals and C/N ratio (5-10) in sediment showed that the organic matter and heavy metals in sediment of the study region were significantly influenced by oceanic origin organic matter and anthropogenic sources, respectively. Based on the results of four assessment techniques (sediment quality guideline, geoaccumulation index, pollution load index, ecological risk index), the sediments around the Goseong Bay were a little polluted for heavy metals and the high metal concentrations in the northern region of bay could adverse impact on benthic organisms in sediment. Thus, the systematic management plan for the improvement of water and sediment environment and the concentrated monitoring of pollutants for sustainable aquaculture and seafood safety around Goseong Bay are necessary in the future.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2002.11a
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• pp.296-297
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• 2002

입자상 오염물질은 공기역학적 직경 2.5$\mu\textrm{m}$를 기준으로 미세입자와 거대입자로 나누어지는 쌍극분포의 형태(Whitby et at., 1972)를 나타내며, 분진이 인체에 미치는 영향에 관한 많은 연구를 통해 10$\mu\textrm{m}$ 이하의 입자가 호흡성 분진으로 인체에 더 유해한 영향을 미치고 있음이 밝혀졌다(Emison, 1988). 이러한 특징은 동일 질량의 분진을 가정할 때 입자의 직결이 작아질수록 저감효율이 떨어지며, 분진의 표면적이 커져 중금속이나 가스상 오염물질의 흡착이 상대적으로 용이해지기 때문이다(Saffiotti, 1965). (중략)

• Environmental Analysis Health and Toxicology
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• v.19 no.4
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• pp.327-334
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• 2004

도심지역의 중금속 배출원은 매우 다양하며, 배출 중금속은 물질별 노출 수준, 노출기간에 따라 건강유해영향을 일으킬 수 있다. 따라서 직업적 노출이 없는 도심 지역의 일반인의 혈중 중금속의 모니터링은 독성학적 측면에서 중요하다. 본 연구는 서울 도심지역의 직업적 노출이 없는 성인 남녀 144명(20∼75세)을 대상으로 중금속(납, 크롬, 니켈, 카드뮴)의 혈액 내 축적된 정도를 평가하였다. 채취한 혈액의 분석은 GF-AAS를 사용하였다. 물질별 혈중 중금속 농도는 납 63.2 $\mu\textrm{g}$/L, 크롬 0.12 $\mu\textrm{g}$/L, 니켈 $\mu\textrm{g}$/L, 카드뮴 1.43 $\mu\textrm{g}$/L로 각각 조사되었다.