Abstract
The paper considers a low-level analysis of the glycol content in industrial wastewater using a split injection. The investigation method of mass concentrations of ethylene glycol in wastewater samples HDPE F 14.1:2.250-08 'Method of measuring mass concentrations of ethylene glycol and diethylene glycol in natural and wastewater samples by gas chromatography', based on chromatographic separation of sample components. The analysis of ethylene glycol content in airport wastewater is very important due to its high toxicity (waste of anti-icing fluid based on ethylene glycol of hazard class 3 waste). Achievement consistent results for low-level analysis of glycols in water samples is difficult with splitless injection primarily due to backfire problems, poor peak shape, and varying retention times. The split injection method discussed in this article avoids these problems and gives good and reliable chromatographic results. Most antifreezes used today are based on ethylene glycol, but propylene glycol-based products are becoming more common. Both have high boiling points, low vapor pressure, excellent heat transfer capabilities, and the ability to lower the freezing point of water, but ethylene glycol is a slightly more effective freezing point depressant. It is necessary to check the contamination of the waste stream in areas where antifreeze is stored or used refrigerant is disposed of, since ethylene glycol is classified as a hazard class 3 substance. Increased glycol levels in rivers can cause an increase in biological oxygen demand (BOD). In severe cases of infection, aquatic organisms can die as a result of oxygen starvation, rather than direct poisoning. Many environmental problems, such as negative effects on aquatic life, destruction of aquatic ecosystems, soil pollution, decreased oxygen levels in water absorption through skin contact, brain damage, damage to the central nervous system and joints, eye damage, toxicity, have been associated with the content of ethyleneglycolin waste water.
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