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METHOD OF DETERMINING CONTENT OF CHLOROBENZENE IN NATURAL AND WASTE WATER USING GAS CHROMATOGRAPHY AND EQUILIBRATION VAPOUR ANALYSIS
METHOD OF DETERMINING CONTENT OF CHLOROBENZENE IN NATURAL AND WASTE WATER USING GAS CHROMATOGRAPHY AND EQUILIBRATION VAPOUR ANALYSIS
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机译:气相色谱-平衡蒸气分析法测定天然废水和废水中氯苯含量的方法
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FIELD: chemistry.;SUBSTANCE: method of determining chlorobenzene in natural and waste water using gas chromatography and equilibrium vapour analysis includes determining chlorobenzene on a chromatographic capitally column in a carrier gas current which is nitrogen; generating and detecting the investigated ions formed in a flame with a flame-ionisation detector. The method also includes preparing a basic solution using a more viscous ethylene glycol solvent, hence the basic solution is well preserved for 2 months at temperature in the range of -2°C to -10°C; preparing calibration solutions for chlorobenzene concentration in the range of 0.0003-0.02 mg/dm3; sample preparation, calibrating the chromatograph by perforating the vapour phase of the prepared concentrations; plotting a calibration curve; sample preparation for the analysed water samples; perforating the vapour phase into the evaporator of the chromatograph. The obtained data are processed using ChemStation software which comes in a set with the MAESTRO 7820A chromatographic kit, and qualitative identification and quantitative content of the determined substance is obtained.;EFFECT: improved consistency and accuracy of analysis, shorter duration of the method and easier analysis in environmental monitoring conditions.;6 tbl, 2 dwg
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