A method for simultaneous determination of phenol and pyridine content in wastewater

Abstract

The invention belongs to the field of analytical chemistry, and particularly relates to a method for simultaneously measuring the content of phenol and the content of pyridine in wastewater. The method for simultaneously measuring the content of phenol and the content of pyridine in wastewater is characterized in that the content of phenol and the content of pyridine in wastewater are simultaneously measured with the gas chromatographic method of a flame ionization detector (FID). The method has the advantages that as the content of phenol and the content of pyridine in wastewater are simultaneously measured with the gas chromatographic method of the FID, the detection efficiency of toxic substances in wastewater is improved, the content of phenol and the content of pyridine are measured in time, and the reference can be provided for the recovery rate of phenol and the recovery rate of pyridine.

Description

technical field [0001] The invention belongs to the field of analytical chemistry, and in particular relates to a detection method for simultaneously measuring the contents of phenol and pyridine in waste water. Background technique [0002] With the development of social industrialization, industrial wastewater pollution has seriously affected people's lives, especially the toxic substances in industrial wastewater are more harmful to human life, so the detection of toxic substances in industrial wastewater is the continuous work of scientific researchers , among which the toxic substances in iron and steel plants are mainly phenol and pyridine. [0003] Pyridine is an important chemical raw material, which can be used in the production of pesticides, such as herbicides, fungicides, anti-inflammatory agents, insect repellents, etc.; it is also an excellent solvent, used in cotton weaving, leather, dyeing and finishing industries Widely used; pyridine is easily soluble in wa...

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Problems solved by technology

[0003] Pyridine is an important chemical raw material, which can be used in the production of pesticides, such as herbicides, fungicides, anti-inflammatory agents, insect repellents, etc.; it is also an excellent solvent, used in cotton weaving, leather, dyeing and finishing industries Widely used; pyridine is easily soluble in water and is a toxic chemical. Long-term intake is prone to symptoms of dizziness, headache, insomnia, unsteady gait and digestive tract dysfunction, and liver and kidney damage. my country's GB3828-2002 " In the Surface Water Environmental Quality Standards, pyridine is included in the specific items of drinking water sources, and the standard limit is 0.2mg / L; phenolic wastewater treatment Wastewater containing phenolic substances has a wide range of sources and is more harmful, and phenolic wastewater is discharged without treatment. If it enters the water body, it will endanger the reproduction and survival of aquatic organisms. The phenol-containing wastewater with low concentration and no recovery value, or the wastewater containing tens to hundreds of milligrams of phenol per liter after recycling needs to be purified and then discharged or Reuse

[0004] In the prior art, the phenol and pyridine in the waste water are detected separately, the 4-aminotipyrine photometric method or gas chromatography is used for the phenol, and the gas chromatography is used for the pyridine. These two methods are complicated to operate and take a long time , the efficiency is low; now a method is needed, which can timely measure the content of phenol and pyridine in wastewater, improve the detection efficiency of toxic substances in wastewater, and provide a reference for improving the recovery rate of phenol and pyridine

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