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61 Objective:To establish a gas chromatography method for determination of methacrylonitrile in the air in a workplace by solvent desorption.

62 We used gas chromatography to study the quantity of IAA and ABA in pear young fruits of different varieties from self-pollination to first physiological fruit-falling period.

63 Gas chromatography was performed to analyze the content of allethrin in disc mosquito-repellent incenses.

64 The product of propane gas chromatography, second is the highest percentage of butane and isobutane is, The content of olefins are relatively low.

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65 During the course of the experiment, the student will be exposed to fractional distillation under vacuum, gas chromatography, refractometry, polarimetry , and IR absorption spectroscopy.

66 The biphenyl and phenanthrene in coal tar wastewater are first concentrated by extraction with benzene and then determined by gas chromatography with thin layer column.

67 A calorimetric system which was made by the combination of Differential Thermal Analysis(DTA) and Gas Chromatography for measuring adsorption heat is described in this paper.

68 During the experiments, the concentration of enflurane in the blood was measured intermittently by Gas Chromatography.

69 To establish gas chromatography for the determination of benzene series in the quality control samples.

70 In addition, reversed phase chromatography, pyrolysis gas chromatography and chemical degradation chromatography are discussed respectively.

71 By using a non-polar column separation, the equilibrium conditions for the determination of residual solvents in edible vegetable oils by headspace gas chromatography (HSGC) have been developed.

72 Gas chromatography was performed to analyze the content of allethrin in disc mosquito-repellent incenses. This test method proved to be rapid, simple and accurate.

73 Using acetone adds the water withdraws the atrazine in the soil, than extract with trichloromethane, after concentrated and settle to permit, use the capillary gas chromatography.

74 The paper reports the analysis of C14-C32 monobasic saturated fatty acid methyl esters in marine sediments using SCOT SE-30 glass capillary gas chromatography.

75 The degradation dynamics of iprodione on greengrocery in greenhouse and at open field were studied with gas chromatography(GC).

76 It presents a simple method was presented for the separation and preparation of insect pheromones at the nanogram level by using gas chromatography(GC).

77 Quantitative determination of jasminal by gas chromatography was studied. A quick, convenient, accurate method was obtained in the analysis of jasminal by GC16A gas chromatograph.

78 A method was developed for the determining of endosulfan residues in exporting eel by gas chromatography.

79 This technique is developed on the basis of the Schaefer method (FRG) with the addition of a hydrogen extraction device to a conventional gas chromatography.

80 OBJECTIVE To develop a method for the determination of epoxyethane in oral pharmaceutical plastic bottles by headspace capillary gas chromatography.

81 A Gas Chromatography method was developed to simultaneously determine chloramphenicol and thiamphenicol residues in edible tissues of swine.

82 The purpose was to set up the gas chromatography method of determining the pesticide residues of Aldrin, Dieldin and Endrin in vegetable and its products.

83 Residues of pentachlorophenol and its sodium salt in aquatic products were determined by gas chromatography.

84 These models can better explain the change rules of gas chromatography retention indices for the aliphatic alcohols.

85 Following the CAS stipulation, LICP will now provide 11 services for analysing materials including infrared spectral radiometry, X-ray fluorescence, gas chromatography and mass spectrometry.

86 The method is cheaper, more rapid than gas chromatography, and suited to rapid testing industrial chlordane.

87 A method for determination of palmitic acid and stearic acid in leather fatliquoring agent was developed using the capillary gas chromatography(GC).

88 The article gave a minute description of operational method and skill in measuring trace free TDI in polyurethane prepolymer by gas chromatography.

89 Methods: Compositions of volatile oil in root of Ferula ferulaeoides korov were analyzed by capillary gas chromatography GC MS DS combination.

90 Methods of pyrolysis gas chromatography, infrared spectrum and Mossbauer spectroscopy have been used for the study of the existential state of iron in green vitriols and its preparations.