1The infrared spectrometer for oil detection in water meets the standard
Meets the national standard "HJ637-2012 Water Quality - Determination of Petroleum, Animal and Vegetable Oils - Infrared Luminescence Method"Infrared spectrophotometer for detecting oil in water
2. Technical principle of infrared spectroscopy water oil detector:
According to the HJ637-2012 standard, extract oil substances from water using carbon tetrachloride, determine the total extract, and then adsorb the extract with magnesium silicate. After removing polar substances such as animal and vegetable oils, determine petroleum. The total extract and petroleum content were calculated based on the absorbance A2930, A2960, and A3030 at spectral bands with wave numbers of 2930 cm-1 (stretching vibration of C-H bond in CH2 group), 2960 cm-1 (stretching vibration of C-H bond in CH3 group), and 3030 cm-1 (stretching vibration of C-H bond in aromatic ring), respectively. The content of animal and vegetable oils is calculated based on the difference between the total extract and petroleum content.
3The department using the infrared spectrophotometer for oil detection in water
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.
4Application range of infrared spectrophotometer for oil detection in water
This instrument is mainly used for measuring oil content in surface water, groundwater, and industrial wastewater. It can also be used for monitoring oil content in flue gas and solids in the catering industry. This instrument is used to measure the oil content in water, gases, and solids.Infrared spectrophotometer for detecting oil in water
5Technical specifications of infrared spectrophotometer for oil detection in water
Detection limit: 3SD ≤ 0.02mg/L (measure 11 times blank and calculate 3 times standard deviation)
Detected concentration: 0.0005mg/L
Measurement concentration: pure oil
Measurement of tetrachloroethylene: 2930cm-1 absorbance: ＜ 0.2（A）
Aromatic hydrocarbon detection limit: 2mg/L (benzene national standard substance)
Repeatability: RSD ≤ 0.3% (11 measurements of 30-100mg/L oil sample)
Accuracy error:< 1%
Correlation coefficient: R>0.999
Scanning speed: Full spectrum scanning, 30 seconds/time
Wave number range: 3400cm-1 to 2400cm-1 (i.e. 2941nm to 4167nm)
Absorption range: 0.0000-2.0000 AU (i.e. transmittance of 100-1% T)
Wave number accuracy and repeatability: ± 1cm-1
Temperature and humidity range: 1 ℃ -40 ℃, humidity ≤ 90%
Host dimensions: 45cm × 35cm × 13cm (length, width, height)
6Technical characteristics of infrared spectroscopy water oil detector
1. Compliant with the national standard HJ637-2012, the infrared three wavenumber scale is accurate and can clearly display the absorption spectra and absorbance generated by the three wavenumbers;
2. A detachable integrated optical system with small size, short optical path length, and high energy, capable of first splitting and then absorbing light, ensuring good stability;
3. The instrument workstation adopts the new and stable Microsoft NET operating platform, green hard drive version can be used without installation;
4. Control using Windows 7 or Windows 10 operating system;
5. Can be used as a fully automatic infrared spectrophotometer to avoid contact with carbon tetrachloride;
6. Other non hydrocarbon organic solvents such as tetrachloroethylene can be used as extractants, and the manufacturer provides solvents and technical support;
7. The instrument can automatically adjust the wavelength positioning of methylene 2930cm-1 to achieve accurate measurement.
8. The instrument is equipped with a built-in touch tablet, an external wireless mouse and keyboard, and can also be operated on an external computer for convenient and fast operation;
9. Zero point real-time adjustment, using a pyroelectric infrared detector to collect the pyroelectric signal formed when the halogen lamp is turned on and off;
10. It has functions such as automatic statistical analysis, spectrum display, storage, and printing, and can be remotely controlled and operated through wireless networking;