UV oil meter is a high-tech testing equipment based on the principle of interaction between ultraviolet light and substances, widely used in water quality monitoring, industrial wastewater treatment and scientific research fields.This article will introduce the detection principle of UV oil meter and its application.
The detection principle of UV oil meter is mainly based on UV fluorescence and UV absorption method.
UV fluorescence method:
Principle: Under specific conditions (e.g. pH ≤ 2), the oils in the sample are extracted with hexane, dehydrated, and then adsorbed with magnesium silicate to remove polar substances such as animal and plant oils.When petroleum-based substances are excited by an ultraviolet light source, the molecules make a jump, releasing the absorbed energy in the form of fluorescence as the molecules return from the excited state to the vibrational energy level of the ground state.The fluorescence intensity is proportional to the petroleum content over a range of concentrations.
Application: By measuring the fluorescence intensity and wavelength, the oil content in a water sample can be accurately calculated.This method is highly accurate and stable with a small error range and is applicable to a wide range of water quality monitoring scenarios.
Ultraviolet absorption method:c
Principle: Based on the Beer-Lambert law, which states that there is a linear relationship between the absorbance of light in a substance and the concentration of the substance.The UV Oil Meter utilises the property that UV light is absorbed by oil molecules at a specific wavelength, and determines the content of the oil by measuring the intensity of the absorbed light.
Application: A light source generates a UV beam that is directed onto a sample containing oil. The oil molecules in the oil absorb the UV light at a specific wavelength, resulting in a reduction in light intensity.The photoelectric sensor measures this change in light intensity and converts it into an electrical signal. By comparing the change in light intensity of different samples, the total oil content in fats and oils can be accurately determined.
UV oil meter has been widely used in many fields due to its high accuracy, high degree of automation and wide range of application.
Environmental monitoring:
Surface water monitoring: Natural water bodies such as rivers, lakes and oceans are vulnerable to petroleum-based pollutants.The UV oil meter can regularly test these water bodies, monitor the content of petroleum-based substances in the water, detect and deal with oil pollution incidents in a timely manner, and provide data support for the protection of aquatic organisms and the ecological environment.
Groundwater monitoring: Oil extraction, wastewater discharges from chemical companies, etc. may lead to groundwater contamination.The UV oil detector can detect trace amounts of petroleum-based substances in groundwater, assess the degree of groundwater contamination, and safeguard the safety of drinking water sources.
Atmospheric precipitation monitoring: Petroleum-based pollutants in the atmosphere may enter water bodies with precipitation.Through the detection of atmospheric precipitation such as rain and snow, the migration of petroleum pollutants in the atmosphere can be analysed using ultraviolet oil meters, which can help to study the sources of pollution and trends in the regional environment.
Industrial area:
Petrochemicals: During petroleum extraction, refining and chemical production, large quantities of wastewater containing petroleum-based substances are generated.UV oil meters can be used to monitor the discharge of these industrial wastewaters to ensure that the wastewater meets environmental standards before it is discharged.
Machining: Cutting oils, lubricants, etc. used in machining processes may enter wastewater.The use of the oil meter can be used to detect the production wastewater of machining enterprises, control the discharge of petroleum-based pollutants, and avoid pollution of the surrounding water environment.
Printing and dyeing and food processing: some auxiliaries used in the printing and dyeing process, food processing enterprises in the process of equipment lubrication, etc. may have a small amount of oil substances into the wastewater.UV oil meters can help these industries monitor wastewater and prevent the direct discharge of wastewater containing petroleum-based substances without treatment.
The field of scientific research:
Environmental scientific research: UV oil meter is an indispensable tool in the study of petroleum pollutants in the water body migration transformation rules, biodegradation process.Researchers can monitor the decomposition rate of petroleum pollutants under different water quality conditions by means of an oil meter, study the degradation of petroleum by microorganisms, and provide experimental data for the development of more effective water remediation technologies.
