Water analyzer WOA-6000

oilliquidsindustrial

Short description:
Portable fully automatic infrared oil analyzer for quantifying total petroleum and animal/plant oils in surface water, groundwater and industrial wastewater.

Meeting the standard:
Complies with national standard HJ637-2012 "Water quality — Determination of petroleum and animal and plant oil — Infrared photometric method".

Technical principle:
According to HJ637-2012, oil is extracted from water using tetrachloromethane (CCl4) or tetrachloroethylene (C2Cl4). An oil/water separation membrane replaces anhydrous sodium sulfate to remove impurities and moisture. The extracted solution is measured by infrared spectrometry at wave numbers 2930 cm-1, 2960 cm-1 and 3030 cm-1 to determine total extracts, petroleum and animal/plant oil content via absorbance values A2930, A2960 and A3030.

Using departments:

• Environmental monitoring agencies
• Petrochemical industry
• Hydrology and water conservancy
• Water supply companies
• Sewage treatment plants
• Thermal power plants
• Iron and steel enterprises
• University teaching and research
• Agricultural environmental monitoring
• Railway environmental monitoring
• Automotive manufacturing
• Marine environmental monitoring
• Transport environmental monitoring
• Environmental research and testing laboratories
• Laboratory use

Instrument application range:
Designed for measuring oil content in surface water, groundwater and industrial wastewater; supports dilution or enrichment extraction methods for a wide concentration range.

Work structure principle:
WOA-6000 consists of a host computer, operating software, infrared spectroscopic system and magnetic stirring extraction system. Using a specified extraction solvent and drum-type stirring extraction, oils are extracted, filtered through an oil/water separation membrane into a cuvette and analyzed by the infrared spectrometer. With an optional magnesium silicate adsorption column, the instrument distinguishes mineral oil from animal/plant oils. The process is automated: automatic filling, extraction, separation, measurement, cleaning, waste discharge and data storage, minimizing operator exposure to solvents.

Technical specifications:

• Model: WOA-6000
• Detection limit: DL < 0.02 mg/L (3×std dev, 11 blanks)
• Wave-number range: 3400–2400 cm-1 (2941–4167 nm)
• Absorbency range: 0.0000–2.0000 AU (transmittance 100–1 %T)
• Water sample measurement range: 0.001–10000 mg/L (with dilution/enrichment)
• Instrument measurement range: 0.02–900 mg/L
• Repeatability: RSD ≤ 1% (20–100 mg/L, 11 determinations)
• Measurement accuracy: < ±2%
• Correlation coefficient: R > 0.999
• Water sampling volume: 5–600 ml or 5–1000 ml
• Extraction solvent: CCl4 or C2Cl4 (supports upgrade to less toxic reagents)
• Extraction technology: drum-type magnetic stirring extraction (extraction rate >95%)
• Filtration: oil/water separation membrane (reusable)
• Optional: magnesium silicate adsorption column for mineral vs. animal/plant oil distinction
• Automation: automatic filling, extraction, separation, measurement, cleaning and waste discharge
• Software platform: NET4.0 oil analyzer software

Main instrument characteristics:

• Full automation of filling, extraction, filtration, measurement, drainage and cleaning.
• Integrated compact design for on-site portability and emergency detection.
• Operator safety: no direct contact with CCl4 during the automated process.
• High extraction efficiency using drum-type magnetic stirring (extraction >95%).
• Oil/water separation membrane replaces anhydrous sodium sulfate; membrane reusable for many cycles.
• Upgradeable to use less toxic extraction reagents for fully automatic operation.
• Optional adsorption column for distinguishing mineral oil from animal/plant oils.
• True three-wave-number infrared display with spectrum diagram and accuracy scale.
• One-key calibration and one-key sample measurement to simplify field operation.
• Corrosion-resistant materials compatible with acidic/alkaline media and extraction solvents; automated cleaning reduces cross-contamination.