The catalyze oxidation products of cyclohexane were analyzed by gas chromatography-mass spectrometry (GC/MS). An unknown main component had been identified by manual solution and chemical reaction as peroxy-cyclohexanol.
A pot of cooking oil was contaminated to glaucous.Blue substance had been isolated from the oil,and identified to be phthalocyanine pigment by means of testing physical and chemical properties and analyzing the oxidat...A pot of cooking oil was contaminated to glaucous.Blue substance had been isolated from the oil,and identified to be phthalocyanine pigment by means of testing physical and chemical properties and analyzing the oxidative degradation products by GC-MS.The Mr of pigment was detected by EI MS to be 575 relating to the copper phthalocyanine.展开更多
Volatile components were extracted from fresh Canarium pimela Koening fruits by sonication with anhydrous ether,and analyzed by gas chromatography-mass spectrometry(GC-MS) with headspace solid phase micro-extraction(H...Volatile components were extracted from fresh Canarium pimela Koening fruits by sonication with anhydrous ether,and analyzed by gas chromatography-mass spectrometry(GC-MS) with headspace solid phase micro-extraction(HS-SPME).Thirty-seven components were identified with the identification rate of 99.1%.The content of terpene compounds,included 3-thujene(32.64%),α-phellandrene(30.78 %),limonene(18.77%),2-thujene(6.81%),etc,were more than 91.4% in the volatile composition.The fatty acids from fresh Canarium pimela Koening fruits were extracted by sonication with anhydrous ether.The extracted fatty acids were esterified and analyzed by GC-MS.Ten fatty acids including palmitic acid(57.4%),oleic acid(28.92%) and linoleic acid(11.38%),etc,were detected and identified.展开更多
文摘The catalyze oxidation products of cyclohexane were analyzed by gas chromatography-mass spectrometry (GC/MS). An unknown main component had been identified by manual solution and chemical reaction as peroxy-cyclohexanol.
文摘A pot of cooking oil was contaminated to glaucous.Blue substance had been isolated from the oil,and identified to be phthalocyanine pigment by means of testing physical and chemical properties and analyzing the oxidative degradation products by GC-MS.The Mr of pigment was detected by EI MS to be 575 relating to the copper phthalocyanine.
文摘Volatile components were extracted from fresh Canarium pimela Koening fruits by sonication with anhydrous ether,and analyzed by gas chromatography-mass spectrometry(GC-MS) with headspace solid phase micro-extraction(HS-SPME).Thirty-seven components were identified with the identification rate of 99.1%.The content of terpene compounds,included 3-thujene(32.64%),α-phellandrene(30.78 %),limonene(18.77%),2-thujene(6.81%),etc,were more than 91.4% in the volatile composition.The fatty acids from fresh Canarium pimela Koening fruits were extracted by sonication with anhydrous ether.The extracted fatty acids were esterified and analyzed by GC-MS.Ten fatty acids including palmitic acid(57.4%),oleic acid(28.92%) and linoleic acid(11.38%),etc,were detected and identified.
