• 대한화학회지
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• 제21권4호
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• pp.246-255
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• 1977

여러 종류의 層間 陽이온을 가지고 있는 層狀 硅酸鹽上에서 일어난 methylmethacrylate의 吸着에 關하여 赤外線 分光法과 X-ray로 硏究하였다. 吸着된 methylmethacrylate의 여러 개의 特性 carbonyl band가 陽이온의 種과 脫水溫度에 따라서 다르게 1723∼1547$cm^{-1}$의 範圍에서 나타났다. 190$cm^{-1}$程度로 shift한 carbonyl 伸縮 band는 polyvalent 陽이온에만 나타났으며 $>C=O{\cdot}{\cdot}{\cdot}M^{n+}$型 着物形成 基因하는 것이었다. 1703∼1640$cm^{-1}$에서 나타난 band는 carbonyl 酸素와 陽이온 水 또는 陽이온 水酸基와의 水素結合에 依한 것이었고 shift한 정도는 層間 陽이온의 polarizing power와 좋은 相互 關係를 이루었다. 그러나 1723$cm^{-1}$에서 나타난 band는 陽이온의 鍾과는 相互 關係가 없었으며 carbonyl ,酸素와 表面 水酸基와의 相互 作用으로 因한 것이었다. Interlamellar spacing을 계산해 본 結果 methylmethacrylate의 分子平面은 硅酸鹽의 層과 平行하게 놓여 있는 것 같다.

• 한국대기환경학회지
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• 제22권5호
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• pp.679-692
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• 2006

The carbonyl compounds in the atmosphere belong to one of the regulatory pollutants for the malodor control designated by the Korean Ministry of Environment(KMOE). In the present study, the emission concentration levels of carbonyl compounds were measured along with a number of criteria odor pollutants from a total of 47 individual companies(June 2004 to January 2005). The results of our study showed that a number of carbonyl compounds(such as formaldehyde, acetaldehyde, acetone, and butyraldehyde) maintained significantly high mean concentrations of 298 to 372 ppb. In contrast, other carbonyl compounds were low enough with the mean valves of 0.54 to 19.1 ppb. It was found that except for such industries as metal production or leather processing, their emissions were generally quite significant. If the measured values were evaluated in terms of malodor intensity, butyraldehyde appeared to be the most significant contributor to the malodor release. According to the measurements made in strong source areas, it can be concluded that several carbonyl compounds(acetaldehyde, propionaldehyde, butyraldehyde, isovaleraldehyde, and valeraldehyde) are useful enough to diagnose malodor release from those source areas. It should also be addressed that a number of carbonyl compounds added newly as the result of malodor control legislation were not sensitive enough to diagnose malodor release from such sources.

• 한국식품영양과학회지
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• 제19권6호
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• pp.565-570
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• 1990

Plasmid pBR322 DNA와 Maillard 반응생성물중 카르보닐화합물인 glyoxal, methyl glyoxal, dihydroxyacetone, diacetyl, glyceraldehyde, glycolaldehyde 및 furfural 등과 각각 37$^{\circ}C$에서 반응시켰을때 나타나는 DNA 손상능과 활성산소소거제에 의한 DNA손상억제 작용을 agarose gel 전기영동을 통하여 살펴보았다. 카르보닐화합물을 37$^{\circ}C$에서 6시간 동안 반응시켰을 경우, furfural을 제외한 모든 카르보닐화합물에 DNA 손상능이 나타났는데, 그 중에서도 glyoxal, methyl glyoxal 및 dihyd-roxyacetone 이 diacetyl, glyceraldehyde 및 glyco-laldehyde보다 BNA의 손상능이 크게 나타났다. 또한 plasmid DNA와 카르보닐화합물의 반응계에 각종 활성산소소거제의 첨가를 통하여 이들 카르보닐화합물에 대한 DNA의 손상을 검토한 결과 일중항산소, 과산화수소, superoxide anion 등이 주요원인물질로 밝혀졌으며, hydroxyl radical은 그 작용이 미약하거나 거의 영향을 나타내지 않는 것으로 나타났다.

• Asian Journal of Atmospheric Environment
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• 제2권2호
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• pp.109-115
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• 2008

In this study, the emissions of carbonyl compounds as offensive odorants were measured using three food types (Kimchi, fresh fish, and salted fish) as a function of time. Odor samples for each food type, collected at 0, 1, 3, 7, and 14 days, were analyzed by high performance liquid chromatography (HPLC). Only three kinds of carbonyl compounds were quantified above their respective detection limits: formaldehyde, acetaldehyde, and acetone. The emission patterns of these compounds were distinguishable from each other. Formaldehyde tends to peak at the beginning and decrease through time with unique patterns. Conversely, acetaldehyde and acetone seem to increase gradually through time. The results showed that relative patterns of carbonyl emissions were more distinguishable by compound type rather than food type.

• 한국식품과학회지
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• 제32권6호
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• pp.1227-1233
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• 2000

Lycopene을 dichloromethan에 용해하고 dry ice 상에서 ozonolysis을 행하였다. Ozonolysis에 의해 생성된 산화개열산물은 silica gel chromatography를 행하여 분획하고, photodiode array detector를 이용하여 ODS-HPLC와 LC-MS를 이용하여 분석하였다. Lycopene으로부터 생성된 carbonyl 화합물로 acycloretinal, apo-14'-lycopenal, apo-12'-lycopenal, apo-10'-lycopenal, apo-8'-lycopenal 그리고 apo-6'-lycopenal이 동정되었다. Lycopene을 toluene 및 Tween 40 수용액에 용해하고 $37^{\circ}C$에서 자동산화시킨 결과, 다수의 carbonyl 화합물이 생성되었다. Lycopene의 자동산화에 의해 생성된 carbonyl 화합물의 대부분은 ozonolysis에 얻어진 산화개열산물이 나타내는 HPLC상의 거동과 분광학적 특성이 서로 잘 일치하였다. 이러한 결과는 in vitro 상의 산화적 조건하에서 lycopene 자동산화에 의해 eccentric cleavage가 생성됨을 알 수 있었다.

• 대한화학회지
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• 제18권3호
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• pp.180-188
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• 1974

Layer silicate 에 지지된 陽이온상에서의 일어난 acetaldehyde, acrolein, 그리고 crotonaldehyde의 吸着機構에 對하여 IR과 X-ray로서 硏究하였다. $1720∼1580㎝^{-1}$의 범위에서 일어난 4個의 특성적인 吸捉 band를 分析한 結果 $130㎝^{-1}$程度로 shift한 carbonyl band 는 >C=O${\cdots}$M형 complex 形成에 基因하는 것이었고, acetaldehyde는 $1722㎝^{-1}$에서, 다른 알데히드는 $1690㎝^{-1}$에서 sharp하게 나타난 carbonyl band는 >C=O와 surface -O-H와의 interaction에서 일어난 것이었다. 그리고 1710∼1660㎝-1에서 나타난 broad한 band는 >C=O와 陽이온 -O-H와의 사이에 일어난 水素結合에 依한 것이었다. 그리고 $1640∼1660㎝^{-1}$사이에 나타난 弱한 band는 carbonyl group 의 强한 吸着에 依하여 誤起된 >C=C< 二重結合에 依한 것이었다. 이 사실들은 X-ray 廻折에 依하여 다시 確認하였다.

• Bulletin of the Korean Chemical Society
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• 제20권7호
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• pp.775-776
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• 1999

• Bulletin of the Korean Chemical Society
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• 제22권11호
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• pp.1277-1279
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• 2001

• Bulletin of the Korean Chemical Society
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• 제23권1호
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• pp.65-70
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• 2002

We have evaluated the specific hydroxyl group-solvent and carbonyl group-solvent interactions by using an Alltima C18 stationary phase and by measuring the retention data of carefully selected solutes in 60/40, 70/30, and 80/20(v/v%) acetonitrile/water eluents at 25, 30, 35, 40, 45, and 50 oC. The selected solutes are phenol, acetophenone, alkylbenznes(benzene to hexylbenznene), 4 positional isomers of phenylbutanol, 5-phenyl-1-pentanol, 3 positional isomers of alkylarylketone derived from butylbenzene, and 1-phenyl-2-hexanone. The magnitudes of hydroxyl group-acetonitrile/water specific interaction enthalpies are larger than those of carbonyl group-acetonitrile/water specific interaction enthalpies in general while the magnitudes of carbonyl group-methanol/water specific interaction enthalpies are larger than those of hydroxyl group-methanol/water specific interactions. We observed clear discrepancies in functional group-solvent specific interaction among positional isomers. The variation trends of solute transfer enthalpies and entropies with mobile phase composition in the acetonitrile/water system are much different from those in the methanol/water system. The well-known pocket formation of acetonitrile in aqueous acetonitrile mixtures has proven to be useful to explain such phenomena.

• 한국대기환경학회지
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• 제22권2호
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• pp.201-208
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• 2006

Several carbonyl compounds are important because of their irritant and toxic properties, mutagenicity and carcinogenicity. Therefore, they are regulated in korean odor emission standard. In this study, atmospheric pressure ionization-mass spectrometry(API-MS) is used for the analysis of carbonyl compounds after derivatization with 2, 4-dinitrophenylhydrazine (DNPH) and liquid chromatographic separation. In the negative ion mode, the $[M-H]^-$ pseudomolecular ions are most abundant for the carbonyls. Analytical parameters such as linearity, repeatability and minimum detection limit were evaluated. The linearities ($r^2$) for carbonyls were $0.9977{\sim}0.9999$ when analyte concentration ranges from $25\;to\;250{\mu}g/L$(n=6). The relative standard deviations (%RSD) for carbonyls were $0.55{\sim}3.51%$ for concentration of $100{\mu}g/L$(n=5). The minimum detection limit (MDL) was $1.88{\mu}g/L$(0.27 ppb) for i-valeraldehyde. It was shown that LC-MS method has a great potential for carbonyl compounds analysis.