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31 The methods of determination of crotonaldehyde in various samples of the PVA(poly vinyl alcohol) producing line by gas chromatography and flame ionization detector are discussed in this paper.

32 In this paper, carbon bisuphide is used as extractor to extract the residual epihalohydrin from cationic etherified reagent, then the residual epihalohydrin is detected with gas chromatography.

33 The deactivation kinetics for the vapor-phase disproportionation of toluene over mordenite catalyst has been studied by using a combined unit of micro-reactor under pressure and gas chromatography.

34 Enrich trichloroethylene in water with the method of hexane extraction, and determine it by capillary column gas chromatography.

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35 An analytical method for buprofezin, fenpropathrin and fenvalerate in tea by gas chromatography with ECD was developed.

36 In this paper, Head-space gas chromatography analyzing trace volatile organic chlorides , such as tetrachloromethane, dichloro-ethane, and so on in water is introduced.

37 A capillary gas chromatography method for determination furfuryl alcohol was established through studying correction factors and range of sample size.

38 Objective To develop a gas chromatography method for the determination of residual organic solvents in acetylated lanolin.

39 The contents of camphor, mentholum, isoborneol and borneol in Guanxingao are determined by gas chromatography.

40 The preparation of divinylbenzene polymer monolithic columns and their applications in gas chromatography (GC) are discussed.

41 To establish direct injection gas chromatography for the determination of air Isophorone in Workplaces.

42 Cyanobenzene and m-cyanotoluane were quantitatively analysed by quartz capillary gas chromatography with SE-30 stationary liquid and FID detector, and n-dodecane as the internal standard.

43 An approach for the determination of trace amount oxazole and other impurities in industrial acrylonitrile by a capillary gas chromatography is presented.

44 The quantitative analysis of cyanazine by using capillary gas chromatography was reported in this paper. The coefficient of variation was 0 15%, and the recovery was 100 10%.

45 The paper has reviewed the analysis method, the gas chromatography and the near infrared spectroscopy for determining olefin and aromatic hydrocarbon content in gasoline.

46 You will use gas chromatography and refractometry to check the purity of your distillate and to estimate the relative concentrations of limonene and carvone in the oil.

47 Determination of methamidophos, malathion, fenthion residues in beestings by gas chromatography.

48 Methods The contents of trans fatty acid in several kinds of fat products were determinated and analysed by using gas chromatography.

49 A method for determination of chlorothalonil in the aerosol by capillary gas chromatography was described.

50 Total lipid in mice liver was extracted and fatty acid compositions of the phosphatidylcholine (PC) and phosphatidylethanolamine (PE) were assayed using gas chromatography.

51 An on-line analytical method of gas chromatography for determination of total carbon in pure hydrogen produced by PSA was studied.

52 From the gas chromatography, report the percentages of limonene and carvone in your original sample and in the fractions following distillation.

53 It is used as an inert gas in welding, rocket propulsion, balloon flight, hyperbaric chambers, deep-sea diving (see nitrogen narcosis ), gas chromatography, luminous signs, and cryogenics.

54 Spectrophotometric method and gas chromatography were the authorized national standard analytical methods to fusel oil.

55 A method for rapid simultaneous determination of imazalil, thiabendazole and pyrimethanil residues in citrus fruits by using gas chromatography was developed.

56 A method for the determination of phenol in printing ink by brominating derivatization and gas chromatography is described.

57 Before the oxidation treatment, the residues were characterized by gas chromatography mass spectrum(GC-MS) and fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS).

58 The sugar content in the hydrolysate of cocoanut shell is determined by treating samples containing sugar with derivatization extraction method and capillary gas chromatography.

59 OBJECTIVE To establish a capillary gas chromatography method for the determination of residual organic solvents in organometallic antitumor crude drug titanocene dichloride.

60 A method is described for the determination of endosulfan pesticide residues in Litopenaeus vannamai by capillary gas chromatography.