Gas Chromatography

Effects of sulphur fertilization on yield, S uptake and quality of Indian mustard under varied irrigation regimes

“…For determination of the fatty acid content, fatty acid methyl esters were prepared from samples of the total oil, by transmethylation using 14% BF 3 -methanol plus methanol plus benzene (Morrison and Smith 1964). The percentage weight of fatty acids was calculated from the chromatograms by area normalization method (Nogare and Juvet 1966). Glucosinolate content of mustard seed was estimated by high-performance liquid chromatography using chromatograms following the standard method (AOAC 1960).…”

Motion sensitivity of flame ionization detectors

“…Whatever the actual ionization mechanisin, positive and negative ion concentrations in hydrocarbon flames have been estimated at 1010 to 1012 ions/ml. (13).…”

“…-11- of lO amperes, depending on the flow rate and the impurity content (13). The ions are collected at the electrodes, the probe being negative and the positive electrode, which is a cylinder located.…”

“…Subsequent to this, a series of tests were performed to determine if linear accelerations would have any effect on the ratios of the gases suggested in the literature for optimum sensitivity (13). The nitrogen and hydrogen were maintained at a 1: 1 ratio and the air flow varied.…”

Use of a Dedicated Computer for Real-Time Control of Gas Chromatographic Measurements

“…The reader who .is interested in a more detailed coverage is directed to the extensive literature on the subject. Some good sources fox" gas chromatography are in references (17)(18)(19)(20). A good review series may be found in reference (21).…”