1. Compliant with standards

GB17378.4-2007 Marine Monitoring Specification - Determination of Oil in Offshore and estuarine Water

2. Application Fields

Can be used for the determination of oil in water bodies such as oceans, nearshore, estuaries, etc

3. Technical principles

The aromatic components of oil in seawater are extracted with petroleum ether, and the fluorescence intensity at the emission wavelength of 360nm is measured on a fluorescence spectrophotometer with 310nm as the excitation wavelength. The relative fluorescence intensity is proportional to the concentration of aromatic hydrocarbons in petroleum ether.

4. System composition

Preprocessing unit: automatically completes volume reading, quantitative addition of reagents, extraction, oil-water separation, and pipeline cleaning;

Sample detection unit: capable of processing multiple samples simultaneously, automatically scanning the samples processed by the pre-processing unit, and can also be manually operated by a single machine;

Data analysis unit: integrates information input, scanning and collection, calculation and analysis; Can be used as a standalone fluorescence spectrophotometer;

Waste liquid treatment unit: equipped with waste gas and waste liquid recovery devices, completely separating reagents from water;

5. Technical indicators

1) Excitation light source: imported xenon lamp, dual monochromator

2) Testing wavelength: excitation wavelength 200-900nm, emission wavelength 200-900nm

3) Spectral bandwidth: 2nm/5nm/10nm/20nm

4) Test path length: 1cm quartz fluorescence colorimetric dish

5) Wavelength accuracy: ± 1nm

6) Resolution: 0 001mg/L

7) Method detection limit: 0 005mg/L

8) Detection limit: better than 1x10-10 (standard solution of quinine sulfate)

9) Measurement range: 0~5mg/L (automatic dilution for over range)

10) Accuracy error: ≤ 2%

11) Repeatability: RSD<2%

12) Linear coefficient: r>0 9995

13) Number of water sample cups: 10-14

14) Sampling volume: 0-600ml (water sample cup with scale)

1 5) Extraction agent dosage: Extraction agent: petroleum ether/n-hexane Extraction dosage: 20ml

1 6) Analysis time: 10 minutes for a single sample, 8 minutes for subsequent samples when measuring multiple samples continuously

1 7) Host specifications: 450mm (length) x 400mm (width) x 250mm (height)

18) Pre processing specifications: (680-750) mm (length) x (560-590) mm (width) x 650mm (height)

19) Power supply: 220V, 50Hz, 550W

20) Temperature and humidity: (-5~35) ℃ (20~85)%