• 대한임상독성학회지
• /
• 제19권1호
• /
• pp.59-63
• /
• 2021

Copper sulfate is widely used as a fungicide and pesticide. Acute copper sulfate poisoning is rare but potentially lethal in severe cases. Copper sulfate can lead to cellular damage of red blood cells, hepatocytes, and myocytes. Toxic effects include intravascular hemolysis, acute tubular necrosis and, rhabdomyolysis. A 76-year-old man presented with vomiting and epigastric pain. He had ingested a copper-containing fungicide (about 13.5 g of copper sulfate) while attempting suicide 2 hours prior to presentation. From day 3 at the hospital, laboratory findings suggesting intravascular hemolysis were noted with increased serum creatinine level. He was treated with a chelating agent, dimercaptosuccinic acid (succimer). His anemia and acute kidney injury gradually resolved with a 19-day regimen of succimer. Our case suggests that succimer can be used for copper sulfate poisoning when other chelating agents are not available.

• Journal of Welding and Joining
• /
• 제18권1호
• /
• pp.70-76
• /
• 2000

A rolled steel for structural parts and lead bronze alloy were bonded each other by a new semi-solid diffusion bonding process to investigate the effect of the process parameters, for example bonding temperature and bonding time, on the interface characteristics, and bonding behavior. It can be possible that manufacture of the bonded steel/lead bronze which has a cylindrical shape with inserted the lead bronze alloy into the steel ring by the diffusion bonding process under the semi-solid condition of the lead bronze alloy without any pressure and flux. It has been know that the control of the amount of the liquid phase in semi-solid lead bronze alloy was very important to obtain soundness interface, since the shear strength of the bonded steel/lead bronze at 850℃ for 60 minutes under the condition of about 40% of the liquid phase in the lead bronze alloy shows maximum value, 210 MPa. The shear strength increases with an increase in bonding time and show maximum value, and then decreases.

• 보존과학회지
• /
• 제36권3호
• /
• pp.178-186
• /
• 2020

동록(銅綠)은 고문헌에 기록되어 있는 전통적인 인공안료 중 하나이다. 고문헌에 기록되어 있는 제법에 따르면, 동록은 동(銅)을 초(醋)를 이용해 부식시키고 생성된 녹을 긁어모아 제조한다. 삼국시대 이후 청동, 황동 등의 동합금을 이용한 다양한 동기(銅器)가 사용되었으며, 채색문화재의 안료분석 연구를 통해 녹색안료에서 구리뿐만 아니라 주석, 아연, 납 등의 검출이 확인되었다. 이와 같은 자료를 바탕으로 구리 및 청동, 황동 등의 구리합금으로 5종의 동록안료를 제조하고 특성 규명을 위한 분석을 수행한 결과, 제조된 동록안료는 청록색을 나타내며, 제조에 사용된 동판의 종류에 따라 색상, 입자형태, 흡유량 등 물성에 차이를 보였다. 또한, 동록안료의 주요 구성원소는 Cu, Sn, Zn, Pb 등으로, 각 원소의 함유 비율은 사용된 동판의 합금 종류에 영향을 받는 것을 알 수 있었다. 동록안료를 구성하는 주요 구성광물은 동판의 종류에 상관없이 호가나이트[hoganite, Cu(CH₃COO)₂·H₂O]로 확인되었다. 촉진내후성 시험을 통해 안정성을 평가한 결과, 동록안료는 전체적으로 빠르게 색변화가 나타나 안정성이 낮은 것으로 보이며, 특히 납 성분을 함유한 경우에는 더 빠르게 색변화가 나타나 상대적으로 취약한 모습을 보였다.

• 대한화장품학회지
• /
• 제50권1호
• /
• pp.77-84
• /
• 2024

사용 연령이 만 4 세 이상부터 표시된 어린이 화장품세트 4 건을 온라인으로 구매하였으며 각 구성품 81 건을 대상으로 납, 카드뮴, 비소, 안티몬, 니켈, 코발트, 구리, 크롬 및 수은의 함량을 inductive coupled plasma-mass spectrometry (ICP - MS)로 분석하였다. 어린이 화장품의 중금속 평균값은 납 0.82 ㎍/g, 카드뮴 0.03 ㎍/g, 비소 0.97 ㎍/g, 안티몬 0.52 ㎍/g, 니켈 2.32 ㎍/g, 수은 0.01 ㎍/g으로 모든 제품에서 허용 기준보다 낮았다. 국산과 수입산의 비교 결과, 국산보다는 수입산에서 납, 안티몬, 코발트, 구리의 평균값이 높게 검출되었다(p < 0.05). 화장품 유형에 따른 중금속 평균값은 통계적으로 유의한 차이를 보였는데(p < 0.05) 아이새도에서 비소 2.47 ㎍/g, 니켈 6.36 ㎍/g, 크롬 11.06 ㎍/g으로 평균값이 가장 높게 나왔으며, 볼연지에서 납 1.20 ㎍/g, 안티몬 1.17 ㎍/g, 구리 23.60 ㎍/g으로 가장 높게 나왔다. 분석된 81 건의 어린이 화장품에 대한 코발트의 검출 수준은 불검출 ~ 5.23 ㎍/g, 구리는 불검출 ~ 379.61 ㎍/g, 크롬은 불검출 ~ 36.95 ㎍/g이었다. 브라운 색상의 화장품은 니켈과 코발트에서 평균값이 높게 검출되었으며, 퍼플 색상은 납과 크롬에서 높게 검출되었다.

• 자원리싸이클링
• /
• 제15권6호
• /
• pp.41-47
• /
• 2006

미생물 침출과 용매추출 기술을 이용하여 전자스크랩중의 구리 및 주석의 회수에 관한 연구를 실시하였다. Asperigillus niger를 이용한 미생물 침출시 신진대사 작용에 의해 구연산(citric acid)이 생성되며 이러한 구연산에 의해 전자스크랩중의 구리, 철, 주석, 납 등의 성분이 침출된다. 이러한 침출용액으로부터 먼저 10vo1.% LIX84를 이용하여 선택적으로 구리를 추출할 수 있었고, LIX84에 의해 추출 분리된 구리는 전해채취공정을 거쳐 99.9%의 금속 구리로 회수가 가능하였다. 한편, 구리가 추출 분리된 침출여액에서 주석을 회수하기 위해서 10% Alamine336을 이용하여 철 및 주석을 추출하고, 철 및 주석이 추출된 유기상을 NaCl용액을 탈거제로 사용함으로써 순수한 철 및 주석의 혼합용액을 얻었다. 이러한 혼합용액에서 철분말을 이용한 치환법으로 주석을 금속상태의 침전물로 회수가 가능하였다.

• 한국지하수토양환경학회지:지하수토양환경
• /
• 제17권6호
• /
• pp.82-91
• /
• 2012

The heavy metal effects on the degradation of fluorene by Sphingobacterium sp. KM-02 was determined in liquid cultures. The results showed that 10 mg/L cadmium, copper, zinc, and lead not only affected the growth of KM-02 with fluorene but also the ability of growing or resting cells to degrade this compound. Growth and fluorene degradation were strongly inhibited by cadmium and copper at 10 mg/L, while the inhibitory effect of zinc and lead at the same concentration or at 100 mg/L were not significant. In contrast, arsenic did not affect degradation or growth, even at very high concentrations of 100 mg/L. Subsequent analyses additionally revealed that concentrations of arsenic remained unchanged following incubation, while those of cadmium and copper decreased significantly.

• The Korean Journal of Ecology
• /
• 제20권1호
• /
• pp.51-59
• /
• 1997

To investigate the distribution of heavy metal concentrations in Onsan bay, concentrations of cadmium, copper, zine and lead in surface sediments and the periwinkles (Littorina brevicula) were determined in Feburary and July, 1996. The ranges of cadmium, copper, zinc and lead concentrations in the surface sediments were 0.08-3.72, 3-307, 49-1273 and 15-399 ${\mu}g/g$ dry weight, respectively, The decrease of concentration in heavy metals with distance from Daejeong stream indicated that this stream is the pollutant source of heavy metals in Onsan Bay. The concentrations of cadmium, copper, zinc and led in L. brevicula were 0.11-11.81, 21-212, 30-96 and 0.26-4.12 ${\mu}g/g$ dry weigth in February and 1.01-24.9, 66-325, 54-225 and 0.68-8.41 ${\mu}g/g$ dry weight in July, respectively. These concentrations in L. brevicula were the significantly different (p<0.001) with the season of sampling. However, overall distribution of concentrations of heavy metals in L. brevicula had very similar tendency that concentrations of heavy metal decreased with the distance from the pollutant source irrespective of the two seasons. Therefore, L. brevicula is considered as a useful indicator for heavy metals pollution, According to analysis of the organs, tissues such as the digestive gland, gill and viceral mussel accumulate high concentrations of heavy metals.

• 헤리티지:역사와 과학
• /
• 제35권
• /
• pp.160-184
• /
• 2002

The composition analysis of mural pigments at Daeungjeon Hall of Bongjeongsa Temple(Treasure No. 55) and ancient tomb with mural pigments in Goadong(Historic site No. 165) were carried out by XRF and MXRD. The analytical result showed that red pigments were Red Lead($Pb_3O_4$), Cinnabar(HgS) at Daeungjeon Hall of Bongjeongsa Temple and Cinnabar(HgS) in Goadong. The main composition identified in white pigments were Lead Carbonate Hydroxide[$PbCO_3{\cdot}Pb(OH)_2$]. Green pigments were basic copper chloride[Paratacamite $CuCl{\cdot}Cu(OH)_3$], celadonite[$K(Mg,Fe,Al)_2(Si, Al)_4O_{10}(OH)_2$] at Daeungjeon Hall of Bongjeongsa Temple and were basic copper chloride or basic copper carbonate in Goadong. Therefore it proved that mural pigments painted in use the mineral materials.

• 대한화학회지
• /
• 제11권1호
• /
• pp.38-43
• /
• 1967

In order to explain the positive catalytic action of copper compound for the rate of leaching of zinc sulfide minerals, the electrode and redox potentials of both synthetic and natural sulfides were measured at various conditions of temperatures and pressures. The potentials of Chalcopyrite and copper sulfide were considerably higher than that of zinc sulfide, whereas lead sulfide and Galena had slightly lower potentials than that of zinc sulfide. At elevated temperatures and pressures, the same tendency was obtained. By means of comparing the calculated and measured values of potentials for sulfides, it was suggested that the electrode potentials in acid solution were generated by oxidation of sulfur ion. As a result, it was concluded that the catalytic action of copper compound in the leaching of synthetic zinc sulfide should be arised from the galvanic action between sulfides keeping intimate contact one another in which copper sulfide worked as cathodic and zinc sulfide as anodic part analogous to the metal corrosion under galvanic action.

• Fisheries and Aquatic Sciences
• /
• 제4권2호
• /
• pp.65-69
• /
• 2001

For the first time the concentrations of copper, zinc, lead, cadmium and crome in the tissues from 17 specimens of cetaceans of Korean coast were determined. The measured concentrations of trace elements were considerably lower than the concentrations previously reported in cetaceans. In inter-species, Cd levels were higher in the kidney of Stejneger's beaked whales and the stomach, liver and lung of Risso's dolphin than in the tissues of minke whale and humpback whale.