Fully automatic UV oil analyzer UV4000B

1UV4000B fully automatic UV oil analyzermeet the standard

According to the national standard HJ970-2018, water quality - Determination of petroleum class - UV spectrophotometric method“
2. Technical principles
According to HJ970-2018 standard, under the condition of pH ≤ 2, the oil substances in the sample are extracted by n-hexane. The extraction solution is dehydrated by anhydrous sodium sulfate, and then adsorbed by magnesium silicate to remove polar substances such as animal and vegetable oils. The absorbance is measured at a wavelength of 225 nm, and the petroleum content and absorbance value comply with Lambert Beer's law
3. Department using the instrument
Environmental monitoring systems are used in testing rooms and laboratories for petrochemical, hydrological and water conservancy, water supply companies, sewage treatment plants, thermal power plants, steel enterprises, scientific research and teaching in universities, agricultural environmental monitoring, railway environmental monitoring, automobile manufacturing, marine environmental monitoring, transportation environmental monitoring, environmental research, etc.
4. Application scope of the instrument
This instrument is mainly used for measuring oil content in surface water, groundwater, and seawater.
5. Working structure principle
UV4000B fully automatic UV oil analyzerComposed of fully automated operating software, UV spectroscopy system, and magnetic stirring extraction system, the oil in the water is extracted using the extraction solvent n-hexane at a certain extraction ratio, and the drum type three-dimensional stirring technology is used to extract the oil from the water. The extraction solution is then introduced into a colorimetric dish through an oil-water separation device to remove water and impurities, and magnesium silicate is used to remove animal and vegetable oils. After analysis and measurement by the UV spectroscopy system, the instrument automatically discharges waste and cleans the pipeline. The entire process is automated, without the need for operators to come into contact with n-hexane, including automatic sampling, automatic extraction, automatic removal of water, impurities, animal and vegetable oils, automatic measurement, automatic cleaning, automatic drainage, and data storage.
6UV4000B fully automatic UV oil analyzertechnical indicators
Instrument detection limit: DL<0.02mg/L (measure 11 times blank and calculate 3 times standard deviation)
Method detection limit: 0.001mg/L
Basic measurement range: 0.0-100% (enrichment and dilution)
Repeatability: RSD ≤ 1% (11 measurements of 2-20mg/L oil sample)
Correlation coefficient: R>0.9999 (0, 2, 4, 8, 12, 16, 20mg/L)
Scanning speed: Single wavelength scanning for 1 second/time, 225nm characteristic peak scanning for 15 seconds/time
Wavelength range: 190 nm-1100 nm
Accuracy: ＜ ± 2%
Resolution: 0.001mg/L
Wave number accuracy and repeatability: 0.5cm-1
取水样体积： 5ml-500ml 或5 ml-1000ml
Sample size for testing: Continuously test 6-21 samples
Extraction reagent and transmittance: n-hexane 225nm transmittance greater than 95%
Absorption range: 0.0000-2.0000 AU (i.e. transmittance of 100-1% T)
Power supply: (220 ± 22) V, (50 ± 1) Hz, 50VA
Temperature and humidity range: 1 ℃ -40 ℃, humidity ≤ 90%
Overall dimensions of the machine: 100cm × 55cm × 65cm (length, width, height)