Infrared spectroscopy oil in water analyzer

Product ID: OT- EP900

Meeting the standard: Conform to national standard“HJ637-2012 water quality the determination of petroleum and animal and plant oil Infrared photometric method”


Technical principle: According to HJ637-2012 standard, extract the oil material in the water using tetrachloromethane, measure the total extracts, extract liquor adsorb via adsorb magnesium silicate, after removing polar material such as the animal and plant oil, determine oil type. The total extracts and the content of petroleum are calculated by absorbance A2930,A2960 and A3030 in the spectrum band ,wave number 2930cm-1(stretching vibration of C-H key in CH2 group ), 2960cm-1(stretching vibration of C-H key in CH3group), 3030cm-1(stretching vibration of C-H key in aromatic nucleus ).The content of animal and plant oil are calculated by the difference of total extractor and oil content.


Using department of instrument:

Environment monitor system, petrochemical, hydrology and water conservancy, water supply company, sewage treatment works, thermal power plant, iron and steel enterprise, teaching and research work in university, agricultural environmental monitoring, Railway environmental monitoring, automobile making, marine environmental monitoring, transport environment monitoring, environmental scientific researches, inspection room, used in laboratory.


Instrument application range:

The equipment is mainly used in the measurement of oil content in the surface water, groundwater, industry waste water, which also can be used in the oil monitoring of smoke in catering industry and monitoring of oil content in the solid. This instrument is professional instrument to measure the oil content in water, gas, solid.


Technical index



Detection limit

0.02mg/L(calculate 3 times standard deviation measuring 11   times blank)

wave-number range


Absorbency range

0.00002.0000AU (transmittance 1001%T)

Minimum detectable concentration

0.001mg/L (enrichment extraction method)

Maximum measured concentration

10000mg/L (dilution gaging)

Instrument measurement range



RSD1% (20-100mg/L Oil sample determined   11 times)

Measurement accuracy

error <±2 %

Related coefficient


The wave number accuracy and wave number repeatability


Main machine net weight


Power supply

(220±22)V, (50±1)Hz,50VA

temperature and humidity

Temperature range: 1-40, humidity80

Main machine external dimension



Main instrument characteristics:

1. Using Windows XP, vstart or Windows 7 operating system control.

2. Have the function of measuring instrument correction coefficient.

3.Adopt advanced USB2.0 interface technology.

4. It is suitable for oil detection in the water on field spots after installed UPS, which also could be installed extract unit to upgrade to fully automatic infrared spectral oil analyzer.

5. True three wave number, clear infrared three wave spectrum diagram, accuracy scale, could clearly display absorb spectrum diagram and absorbance produced by three wave numbers.

6. To inspect light transmittance and purity of extraction agent, can distinguish various distractions

7. Electric speed controller , replacing light source machinery switch, improve instrument reliability.

8. Adopt high performance pyroelectric infrared detectors, accurately gather the signal of pyroelectric current formed in the circuit when halogen lights are lighting and out.

9.Good related coefficient, measurement 0.5-5 mg\L,R>0.999.

10. Have the function of automatic statistical analysis, spectrogram display, storage, printing, etc

Instrument application field and application of national standard

Application units

National standard

The determination of environmental monitoring station,   sewage and industrial wastewater

GB8978—1996 integrated wastewater discharge standard

catering lampblack monitoring unit

GB18483—2001 catering lampblack

emission standard

Municipal drainage station or sewage

treatment plant

GB18918—2002 municipal sewage treatment plant contaminant   emission standard

Urban water supply company or running-water company

GB3838—2002 surface water quality standard

Petrochemical industries

GB3551—83 petroleum refining industrial water contaminant   emission standard

Railway environment monitoring station

GB5469—85 wagon Washing wastewater emission standard

thermal power plant environmental monitor station

GB8978—1996 integrated wastewater emission standard and   other standard

smelting industry waste water monitoring

GB13456—92 steel industrial water  contaminant emission standard

marine fishery water quality monitoring

GB3097 Sea water quality standard and GB11607 water   quality standard of fishery

hydrological environment monitoring station

GB3838—2002 surface water environmental quality standards

Agricultural products quality supervision and inspection   center and Agricultural forestry environment monitoring station

GB4284—84 agricultural sludge pollution control standards