Portable Automatic Infrared Oil Analyzer

I. Purpose

On-site pollution source monitoring and emergency monitoring of petroleum oils in surface water, groundwater and seawater.

II. Technical Principle

1. ★Complies with the national standard HJ 637-2018 Water quality — Determination of petroleum oils, animal and vegetable oils — Infrared spectrophotometric method.

2. ★The measuring principle follows the new national standard method HJ 637-2018. The extraction solvent is automatically injected into the water sample; automatic extraction transfers the oil substances in the water into the reagent; a separation device separates the water from the reagent; animal and vegetable oils are adsorbed on magnesium silicate; and petroleum oil and animal and vegetable oil are then measured and calculated automatically at 3030, 2960 and 2930 cm-1 as required by the national standard.

3. ★Complies with HJ 637-2018; the three-wavenumber infrared spectrum is clear with accurate graduations, clearly showing the absorption spectra and absorbance produced at the three wavenumbers.

4. The portable integrated design houses the sampling bottle, reagent bottle, waste liquid bottle, waste water bottle, extraction device, tablet computer, main unit and lithium battery in a single pull-along case for simple operation and easy transport.

5. ▲One-key fully automatic operation: a single key press automatically measures and imports the sample volume, injects the extraction solvent through a precision syringe, extracts automatically, removes water, switches the magnesium silicate column to adsorb animal and vegetable oils, transfers the extract to the cuvette for measurement and finally cleans the entire flow path. There is no memory effect and no manual intervention between steps.

6. One-key automatic preparation of standard curves, automatic testing of standard samples and automatic testing of water samples.

7. The optical system is designed for good stability and shock resistance and can operate while the monitoring vehicle is moving.

8. Automatic demulsification function: demulsifier is added automatically.

9. ▲Built-in printing function: data are printed automatically after measurement.

10. Supplied with a 10-inch tablet computer running Windows.

11. A single sample is fully analysed automatically in about 10 minutes.

12. A waste recovery device directs waste tetrachloroethylene reagent into a dedicated waste liquid bottle and waste water into a separate bottle.

13. ▲Built-in intelligent lithium battery: no external mobile power supply is needed for on-site emergency monitoring.

14. ▲Independent battery level display shows the remaining charge without switching the instrument on.

15. ▲Non-contact automatic measurement and reading of the sample volume, with a volume measurement error of < 2%.

16. Supplied with brown sampling and extraction bottles: after sampling, the instrument reads the sample volume automatically and extracts directly on the instrument, avoiding transfer losses.

17. ▲Magnetic stirring extraction with adjustable stirring speed for better extraction efficiency.

18. ▲Low instrument weight: the complete unit weighs ≤ 25 kg.

19. Instrument detection limit: DL ≤ 0.06 mg/L (3× SD of 11 measurements of a blank tetrachloroethylene solution).

20. Method detection limit: 0.06 mg/L.

21. Sample measuring range: 0.0–1,000 mg/L, with automatic dilution over range.

22. Repeatability: RSD ≤ 2% (11 measurements of a 30–100 mg/L oil sample).

23. Accuracy error: ≤ 5%.

24. Correlation coefficient: r > 0.999.

III. Technical Parameters