Working principle of UV oil analyzer for detecting oil content in industrial wastewater discharge

The UV600 UV oil analyzer is an instrument that uses UV spectrophotometry to detect the oil content in water bodies such as seawater, surface water, industrial wastewater, and domestic sewage, based on the "National Environmental Protection Standard HJ970-2018 of the People's Republic of China" for the determination of water quality and petroleum.
When the sampling volume is 500 ml, the extraction solution volume is 25 ml, and a 2 cm quartz colorimetric dish is used, the detection limit of the method is 0.01 mg/L, and the lower limit of determination is 0.04 mg/L.

The Chinese operation and program design of the UV oil analyzer will prompt each step on the screen; It can print measurement data and historical data on site, and is equipped with data collection and analysis software. It can be connected to a computer to export instrument measurement data. Aluminum alloy integral die-casting ensures the repeatability and accuracy of the optical path. The deuterium lamp is fixed with a flange for easy replacement: there is no dimming path. The software can achieve spectral scanning, time scanning, kinetic testing, quantitative analysis, multi wavelength analysis and formula calculation, spectrum processing, peak valley search, data printing, DNA/RNA testing, instrument calibration, and more.

Technical parameters and indicators of UV oil analyzer for oil content detection in industrial wastewater discharge

Detection limit 3SD ≤ 0.04mg/L (measure 11 times blank and calculate 3 times standard deviation)
Basic measurement range: 0.0-60mg/L

Repeatability RSD ≤ 0.5% (11 measurements of 30-100mg/L oil sample)
Accuracy error<2%

Correlation coefficient R>0.9999
Scanning speed: Full spectrum scanning, 10 seconds/time
Wavelength range 190 nm~1100 nm

Measure that the transmittance of n-hexane at 225nm is greater than 90%

Technical characteristics of UV oil analyzer

According to the HJ970-2018 standard, the design for measuring oil using UV spectrophotometry meets the standard.
2. Dedicated UV grating with a shining wavelength of 225nm, specifically designed for oil analysis scanning, high accuracy, and good repeatability.
3. It has functions such as automatic statistical analysis, spectrum display, storage, and printing.
4. Accurate positioning of oil measuring wavelength at 225nm, automatic wavelength correction to ensure wavelength accuracy and long-term stability.
5. Wide wavelength range: The instrument's wavelength range covers 190nm to 1100nm, which is equivalent to the wavelength range of instruments of the same level and meets the wavelength requirements of most spectrophotometric analysis and testing.