• 한국토양비료학회지
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• 제50권6호
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• pp.653-662
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• 2017

Copper(II) acetate spectrophotometry method (CASM) was used for the rapid and convenient determination of cation exchange capacity (CEC) in soils. This method is composed of a single-step exchange reaction that adsorbs copper and is measured through spectrophotometry. The CEC of 16 Korean soils were measured using 1M ammonium acetate method (AAM) and the CASM. The CEC values determined by CASM and AAM were not significantly different, and were highly correlated ($r=0.966^{**}$). Due to the convenience, cost effectiveness, and time saving analysis of CASM, this method is recommended for most soil laboratories to measure CEC in Korean soils. However, CASM may not be applicable for soils that have a much higher CEC (greater than $20cmol_c\;kg^{-1}$).

• Bulletin of the Korean Chemical Society
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• 제22권1호
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• pp.113-116
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• 2001

• Bulletin of the Korean Chemical Society
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• 제23권4호
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• pp.563-566
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• 2002

Copper complexes have been directly incorporated into cellulose acetate (CA) and the resulting light blue colored homogeneous films of 5-20 wt.% copper acetate complex concentrations are found to be thermally stable up to 200 $^{\circ}C$. The reaction chem istry of Cu in CA has been investigated by reacting them with small gas molecules such as CO, H2, D2, O2, NO, and olefins in the temperature range of 25-160 $^{\circ}C$, and various Cu-hydride, -carbonyl, -nitrosyl, and olefin species coordinated to Cu sites in CA are characterized by IR and UV/Vis spectroscopic study. The reduction of Cu(II) complexes by reacting with H2 gas at the described conditions results in the formation of Cu2O and copper metal nanoparticles in CA, and their sizes in 30-120 nm range are found to be controlled by adjusting metal complex concentration in CA and/or the reduction reaction conditions. These small copper metal particles show various catalytic reactivity in hydrogenation of olefins and CH3CN; CO oxidation; and NO reduction reactions under relatively mild conditions.

• 한국결정성장학회지
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• 제8권3호
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• pp.431-434
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• 1998

층상구조를 가진 염기성 초산구리, $Cu(OH)(CH_3COO){cdot}H_2O$를 합성하였다. 또한 음이온 치환반응을 통해서 alkyl sulfonate를 염기성 초산구리에 삽입시켰다. X-선 회절 데이터와 alkyl sulfonate의 분자의 크기를 비교하여 층간 삽입된 초산구리의 공간배열을 확인하였다.

• 대한화학회지
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• 제43권3호
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• pp.18-351
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• 1999

• Journal of Microbiology and Biotechnology
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• 제12권5호
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• pp.849-853
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• 2002

Metal ions have an adverse effect on anaerobic digestion. In an acetate degradation test of upflow of anaerobic sludge blanket granules with $Cu^{2+}$, not all of the acetate that disappeared was stoichiometrically converted to methane. In the presence of 400 mg/g-VSS (volatile suspended solids) $Cu^{2+}$, only 26% of the acetate consumed was converted to methane. To study acetate conversion by other anaerobic microorganisms, sulfate and nitrate reductions were investigated in the presence of $Cu^{2+}$ Sulfate and nitrate reductions exhibited more resistance to $Cu^{2+}$than methanogenesis, and the granules reduced 2.2 mM and 5.4 mM of nitrate and sulfate, respectively, in the presence of 400 mg/g-VSS copper ion. However, the acetate degraded by sulfate and nitrate reductions was only 24% of the missing acetate that could have been stoichiometrically converted to $CO_2$. Accordingly, 76% of the acetate consumed appeared to have been converted to other unknown compounds.

• Bulletin of the Korean Chemical Society
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• 제33권5호
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• pp.1785-1787
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• 2012

• Bulletin of the Korean Chemical Society
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• 제34권8호
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• pp.2446-2450
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• 2013

Oxindole dimers have been used as intermediates in the synthesis of various cyclotryptamine alkaloids. An efficient direct synthesis of oxindole dimers has been carried out from 3-substituted oxindoles via an oxidative dimerization using manganese(III) acetate or copper acetate/silver acetate system.

• 대한화학회지
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• 제16권6호
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• pp.373-377
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• 1972

미량 구리의 sodium diethyl dithiocarbamate의 chelate를 ethyl acetate로 추출하고 이 추출액을 구리(원자번호 29번)의 이웃원소인 아연(원자번호 30번) 분말에 흡착시켰다. 추출액을 날려보낸 뒤에 $250kg/cm^2$ 으로 압축성형하여 구리의 $K_{\alpha}2(2{\theta}_{LiF} = 45.08^{\circ})$에서 형광 X-선을 측정한 결과 구리 $10{\mu}g$까지 측정할 수 있었으며 표준물질첨가법에 의하여 상대오차를 ${\pm}10$%이내로 낮출수가 있었다.

• 한국자원식물학회지
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• 제20권3호
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• pp.247-250
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• 2007

This study was performed to investigate the discrimination of Angelica gigas, Angelica acutiloba and Angelica sinensis on the treatment of chromaticity and colorfastness. Angelica gigantis root has been used as a Korean traditional medicine for the treatment of woman disease. Natural dyes give us many great benefits, including diversified color, but no pollution. These studies were carried out acetate iron, dichloride copper and alum with a mordant to ramie fabric. The ramie fabric was dyed with Angelica gigas, Angelica acutiloba and Angelica sinensis. The results of experiment showed as follows: In discrimination by dyeing, the colors of Angelica acutiloba and Angelica sinensis were very similar, but that of Angelica gigas was different. There were no differences among colors of materials using non-mordant. But dyeing with iron acetate and copper dichloride were showed dark in Angelica gigas than other angelica species.