OIL520AType fully automatic UV spectrophotometer oil analyzer

1. Compliant with standards

National Environmental Protection Standards of the People's Republic of ChinaHJ970-2018Determination of Water Quality and Petroleum by UV spectrophotometry (Trial).

2. Technical principles

useHJ970-2018Based on the "Determination of Petroleum in Water Quality by UV spectrophotometry" (Trial), a quantitative amount of n-hexane is injected into the water sample, and oil substances in the water are extracted by rotary stirring. The extraction solution is dehydrated and adsorbed with magnesium silicate to remove polar substances such as animal and vegetable oils225nmMeasure absorbance at wavelength, petroleum content and absorbanceThe value conforms to Lambert Beer's law.

3. application area

Used for the determination of petroleum in surface water, groundwater, and seawater.

4. system composition

preprocessing unit

Infinite injection rotation device, simultaneously stored10A sample to be tested,Support adding water samples midway, the equipment automatically reads the volume of the water sample, automatically adds a quantitative extraction solvent, uses rotary stirring extraction technology to complete water sample extraction and separation of the extraction solution, the equipment automatically adsorbs the extraction solution magnesium silicate, and the adsorbed extraction solution is transported to the detection unit for detection and analysis. After the analysis is completed, the equipment automatically completes the waste liquid discharge and pipeline cleaning work.

detection unit

This unit automatically detects samples from the pre-processing unit and transmits the detection data to the work platform

Data Analysis Unit

This unit consists of a computer and specialized software, used to process data from the detection unit, analyze test results based on given experimental conditions, and output test results in the form of screen display, report printing, etc.

5. Functional Features

1) High degree of automation: automatic completion of extraction agent injection, sample extraction, extraction liquid separation, extraction liquid dehydration and adsorption, extraction liquid detection, and system cleaning, saving manpower and time;

2) Infinite cycle injection: simultaneous storage10A rotating sample disk for the test sample, supporting the addition of water samples midway

3) Simultaneous processing of multiple samples: With three independent working axes, one sample can be tested while the next sample is stirred and extracted, greatly reducing the detection time for individual samples;

4) High extraction efficiency: using rotary stirring disturbance extraction technology, the extraction efficiency is greater than98%；

5) Automatic measurement of water sample volume: The water sample volume automatic detection device can quickly and accurately complete the measurement of water sample volume, which can be directly read by software without the need for manual measurement and input again;

6) Automatic replacement of magnesium silicate: No manual filling is required. Each time it is used, the magnesium silicate storage tank automatically discharges the standard amount of magnesium silicate through a quantitative device. The magnesium silicate particles are thoroughly shaken and mixed with the extraction solution through airflow. After each use, the used magnesium silicate is automatically discharged and cleaned to reduce the risk of cross contamination;

7) Magnesium silicate quantitative device: In order to avoid the impact of magnesium silicate agglomeration on emissions, a magnesium silicate quantitative device has been specially designed, which can ensure that the magnesium silicate used each time can reach the standard dosage;

8) Automatic cleaning and waste disposal: After the test is completed, the equipment adopts a blowing self-cleaning method to automatically discharge waste liquid and clean the pipeline. There is no residue in the pipeline, and the used stirring rod is automatically cleaned without affecting the testing of the next sample;

9) Automatic separation of waste liquid: After the extraction liquid is extracted into the separation tube for separation, the test liquid is transferred to the detection unit. The remaining waste liquid is completely separated from the extraction agent and water by the separation device and discharged into dedicated waste liquid tanks to prevent workers from coming into contact with toxic and harmful gases and liquids;

10) Exhaust gas collection system: independent exhaust duct, equipment can completely discharge harmful gases outdoors without placing them in a fume hood, avoiding the harm of toxic gases to experimental personnel

11) Easy to maintain equipment: Using patented separation and dehydration technology to remove trace amounts of water from the extraction solution, there is no need to frequently replace anhydrous sodium sulfate, resulting in low maintenance costs, more convenient use, and better maintainability,

12) Comprehensive safety measures: To ensure the safety of experimental personnel operating the instrument, sensors are installed on the unit switch door,When the door is not closed, the sample stage will not rotate,Prevent accidents and remind experimenters on the software;

13) Moisture proof device: using a dedicated desiccant to automatically remove water vapor from the air, preventing factors such as magnesium silicate agglomeration and excessive humidity in the pipeline from affecting the test results;

14) The entire system adopts anti-corrosion: anti-corrosion and oil repellent materials are selected to ensure that the system is not corroded, has no residue, and has no cross contamination;

15) High performance light source system: using deuterium lamp light source, high wavelength accuracy, and long service life5000More than hours;

16) Equipped with dedicated analysis software: integrating scanning, calculation and analysis, with computer software copyright certificate;

17) Automatic configuration of standard curve: The instrument automatically dilutes the standard solution according to the requirements and detects it, generating the standard curve automatically;

18) Automatic dilution: For over range samples, the instrument can automatically dilute to ensure the accuracy of the test results

19) Reagent remaining amount monitoring: Real time monitoring of reagent remaining amount. If the reagent amount is insufficient, the software will automatically remind;

20) Equipped with dedicated samplers: Randomly equipped with dedicated samplers, sampling bottles, and sampling boxes, the material of the sampling bottles meets the standard requirements and can be directly tested on the machine without transferring the water sample, avoiding sample errors caused by water sample transfer;

21) Specialized mobile phoneAPPThrough big data cloud processing, mobile phones can achieve functions such as instrument operation status, fault warning, data approval query, and remote diagnosis;

6. Technical indicators and related parameters

1）Wavelength scanning range:190-1100nm

2）Test wavelength:225nm

3）Wavelength accuracy: ±0.5nm

4）Resolution:0.001mg/L

5）Measurement range:0-50mg/L

6）Extraction ratio: any ratio

7）Method detection limit: When the sample volume is500mL,The volume of the extraction solution is25mL, using2cmWhen using a quartz colorimetric dish, the detection limit is0.01mg/L；

8）Instrument detection limit:DL<0.04mg/L(Determination of n-hexane blank solution)11Secondary3timesSD）；

9）Minimum detectable concentration:0.002mg/L

10）Accuracy error: ≤±2%

11）Repeatability:RSD≤2%

12）Linear correlation coefficient:r> 0.999

13）Analysis time: The shortest time for measuring a single sample is7min(including pre-processing time), can be connectedInfinite injection measurementsample

14）Sampling quantity:0~700mlSample cup (water sample cup with scale)

15)Host size:520mm(long)×390mm(wide)×240mm(tall)

16）Host weight:12Kg

17）Extraction unit size:680mm(long)×560mm(Width) ×650mm(High)

18）Extraction unit weight:25Kg

19）Power Supply:(220±22)V、(50±1)Hz、50VA

20）Temperature:-5-45℃

21）Relative humidity:20%-95%

7. OIL520Schematic diagram of pre-processing unit

Concentration limits for petroleum in some environmental quality standards and emission standards in China