• Title, Summary, Keyword: GC/MSD

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Analysis of Volatile Organic Compounds in Kinnchi Absorbed in SPME by GC-AED and GC-MSD (SPME로 포집한 김치 휘발성분의 GC-AED및 GC-MSD에 의한 동정)

  • 하재호
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.31 no.3
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    • pp.543-545
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    • 2002
  • The volatile compounds in kimchi adsorbed with solid phase microextraction (SPM) were analyzed by using a gas chromatograph-atomic emission detector (GC-AED) and a gas chromatograph-mass spectrometer (GC-MSD). The volatile compounds were effectively adsorbed in SPME. Twenty five compounds such as dimethyl-sulfide were identified by GC-MSD and some of these were further confirmed to contain a sulfur and a nitrogen by GC-AED.

A Study on the Analysis of Pesticide Residue in Banana by GC/MSD (GC/MSD를 이용한 바나나 중에서의 잔류농약 분석법에 관한 연구)

  • 박성수;김동원
    • The Korean Journal of Food And Nutrition
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    • v.9 no.2
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    • pp.217-222
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    • 1996
  • We studied about analyzing carbamate pesticides, organochlorine, organophosphorus pesticides simultaneously using by GC/MSD. For this, instead of HPLC which is generally used in analyzing carbamate pesticides, GC was used and all hydrogen of -NH group in carbamate pesticides were substituted for trifluoroacetyl group which is stable at heat And eight pesticide resdidues were not detected in nine samples circulated in the city.

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Rapid Analysis of Major Putrefactive Metabolites by GC and GC/MSD (GC 및 GC/MSD를 이용한 주요 분변 부패산물 신속분석법)

  • 박규용;김민철;우강융;이나경;백현동
    • KSBB Journal
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    • v.18 no.1
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    • pp.74-77
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    • 2003
  • A simple, reproducible, and rapid gas chromatographic method for putrefactive metabolite determination in feces was developed. The method involves the direct injection of fecal supernatants into the gas chromatograph, without pretreatment. The mass spectra of these metabolites were obtained using an HP 5971 mass selective detector operated in electron impact (EI) ionization mode. This method produced sharp peaks and allowed the simultaneous determination of fecal putrefactive metabolites.

Analysis of Higenamine Contents in Plants with HPLC and GC/MSD (HPLC 및 GC/MSD를 이용한 식물 중의 Higenamine 함량 분석)

  • YunChoi, Hye-Sook;Suh, Young-Bae;Hahn, Young-Hee;Song, Yun-Seon;Ryu, Jae-Chun;Chung, Kyo-Soon
    • Korean Journal of Pharmacognosy
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    • v.29 no.2
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    • pp.129-135
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    • 1998
  • Higenamine is known as a cardiotonic principle of Aconiti tuber. The analytical procedures were established for the detection of higenamine in plants. The amounts of higenamine in several Aconiti tubers and the embryo of Nelumbo nucifera, another plant species known to contain higenamine, were determined. The $H_2O$ soluble fraction prepared from MeOH extract was first treated with AD-2 resin and then applied to either HPLC or GC/MSD systems. With HPLC, $6.4{\sim}19.2\;{\mu}g/g$ of higenamine were detected from various Aconiti tubers and $182.3\;{\mu}g/g$ of higenamine from the embryo of Nelumbo nucifera. The results obtained with GC/MSD also provided comparable data with those obtained with HPLC.

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Analysis of 4-hydroxy-3-methoxybenzaldehyde pyrolyzates by Curie-point pyrolyzer-GC/MSD (Curie-point pyrolyzer-GC/MSD를 이용한 4-hydroxy-3-methoxybenzaldehyde의 열분해물 분석)

  • Yu, Euy Kyung;Kim, Ok-Chan
    • Applied Chemistry for Engineering
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    • v.8 no.1
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    • pp.8-15
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    • 1997
  • This study was carried out to present a analysis of pyrolytic degradation of 4-hydroxy-3-methoxybenzal dehyde(vanillin) pyrolyzed at $330^{\circ}C{\sim}920^{\circ}C$ by Curie-point pyrolyzer connected with GC/MSD by on-line system. Identified by GC/MSD were 100 pyrolytic products of vanillin. The pyrolysis of the compound gave benzene, phenol, 1,3-cyclopentadiene, methyl benzene, benzaldehyde, benzofuran, and cresol as major products, which were produced by pyrolytic degradation and synthesis of vanillin radicals.

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Simultaneous Analysis of Ethanol and Harmful Components by GC in Alcoholic Liquors (GC를 이용한 주류중 에탄올 및 유해 성분의 동시 분석법)

  • 정의한;이명자;강금자;문혜성;유병옥;황정구;장준식
    • Journal of Food Hygiene and Safety
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    • v.7 no.1
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    • pp.45-48
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    • 1992
  • In Food revolution of Korea, colorimetries or a titration methods are introduced for the analysis of alcoholic liquors. But, these wet analyses have disadvantages such as individual errors, long process time, and sometimes tedious pretreatments. In the process of making alcoholic liquors, fusel oils are produced as by products. Five main fusel components that could be produced are 2-propanol, n-propanol, iso-butanol, n-butanol, and isoamyl alcohol. Also acetaldehyde and methanol could be produced as by-products of ethanol. With using capillary FFAP column in GC or GC/MSD, we analysed these five fusel components as well as internal standard (acetonitrile) including methanol, acetaldehyde and ethanol simultaneously. We obtained excellent mass spectra as qualitative data of all species. We also took excellent quantitative data with GC by using the internal standard method.

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Development of analytical method for Isotianil in agricultural commodities using GC-NPD and GC-MSD (GC-NPD와 GC-MSD를 이용한 농산물 중 Isotianil의 공정분석법 개발)

  • Do, Jung-Ah;Lee, Mi-Young;Kang, Il-Hyun;Kwon, Kisung;Oh, Jae-Ho
    • Analytical Science and Technology
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    • v.25 no.6
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    • pp.364-369
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    • 2012
  • Isotianil is a novel fungicide which induces systemic acquired resistance in plants. It has excellent preventive effects as low dosages against rice blast which is one of the most serious diseases in rice. The Maximum Residue Limit (MRL) of Isotianil in republic of korea was set to 0.1 mg/kg in rice, so it is necessary to determine levels of Isotianil residues in agricultural commodities for controlling food safety. Therefore, The purpose of this study was to develop analytical method for the determination of isotiical residues in agricultural commodities using GC-NPD/MSD. Isotianil was extracted with acetonitrile from apple, chinese cabbage, hulled rice, mandarin, pepper, and soybean. The extract was diluted with saline water, and then dichloromethane partition was followed to recover this fungcide from the aqueous phase. A solid phase extraction with Florisil cartridge was additionally employed for final clean up. Isotianil was analyzed and quantitated by GC-NPD and confirmed by GC-MSD. Average recovery of Isotianil ranged from 70.0 to 103.9% in six representative agricultural commodities with relative standard deviations less than 10%, and limit of quantification (LOQ) was 0.05 mg/kg.

Analysis of Benzophenone in Sediment and Soil by Gas Chromatography/Mass Spectrometry (기체크로마토그래피/질량분석기에 의한 저질 및 토양시료 중 벤조페논의 분석법 연구)

  • 권오승;김은영;류재천
    • Environmental Analysis Health and Toxicology
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    • v.16 no.3
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    • pp.121-126
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    • 2001
  • Analytical method of benzophenone (BP) in sediment and soil was developed by gas chromatography/mass selective detector/selected ion monitoring (GC/MSD/SIM). The ultrasonic extraction of US EPA (method 3550B) method and liquid-liquid extraction for sediment and soil samples were used for the analysis of BP from sediment and soil. BP was extracted with n-hexane. Organic layer was washed with 5% sodium chloride solution. 1∼2 l of the concentrated solution of organic layer was applied to GC/MSD. The retention time of BP peak was 11.10 min. Recovery (%) of BP by ultrasonication from sediment and soil samples was 96.0∼100.6% and 40.0∼83.0%, respectively. Recovery of BP by liquid-liquid extraction was 51∼59% in soil samples. The detection limit of BP in sediment and soil samples were determined to 0.1 ng/g.

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Analysis of Indole-3-acetic acid from bean sprouts by GC/MSD (GC/MSD를 이용한 콩나물에서의 Indole-3-acetic acid 분석)

  • Lee, Jayoung;Han, IIkeun;Lee, Sangyun;Hawer, Wooderck;Yeo, Ikhyun
    • Analytical Science and Technology
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    • v.8 no.3
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    • pp.375-381
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    • 1995
  • A gas chromatographic analytical method for IAA was developed. IAA was extracted with 80% acetone & methanol. Sample was macerated with 80% acetone & methanol to extract IAA. After filtration, the solvent was removed and residual IAA was esterified with 14% $BF_3$/MeOH. The IAA esters can be easily separated with intermediate polar column.

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Simultaneous detection method for pesticide residues in meat by gas chromatograph-mass selective detector (Gas chromatograph-mass selective detector를 이용한 식육 중 잔류농약의 동시분석)

  • Hong In-Suk;Choi Yoon-Hwa;Kweon Taek-Boo;Lee Jung-Hark
    • Korean Journal of Veterinary Service
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    • v.28 no.3
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    • pp.285-294
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    • 2005
  • This study was conducted to investigate the extraction method for the determination of organochlorine, organophosphorus and synthetic pyrethroid pesticide residues in beef fat by gas chromatography-mass selective detector(GC-MSD). Twenty one pesticide residues in fat were determined using a simple and rapid procedure based on solid- phase extraction(SPE) clean-up cartridges with octadecyl $(C_{18})-bonded$ porous silica, florisil, $10\%$ deactivated florisil. a tandem $C_{18}$ and florisil and a tandem $C_{18}$ and $10\%$ deactivated florisil. Solvent-solvent extraction using acetonitrile was not satisfied to eliminate fat interference for pesticide residue analysis by GC-MSD, and the recoveries of the method in fat ranged from 16.2 to $57.3\%$ except DDT$(83.2\%)$. The recoveries of SPE methods using a tandem $C_{18}$ and Florisil was $59.6\~123.8\%$ except fenitrothion $(135.2\%)$. the SPE method was verified the satisfactory performance of pre-treatment for pesticide residues analysis in fat by GC-MSD. The efficiency of florisil deactivated with $10\%$ water has been not proved significantly on recoveries of pesticide residues in fat.