Product Details

RA-915S high frequency Zeeman effect mercury analyzer

RA-915S uses a pyrolysis technique to heat release mercury from a solid sample to form mercury vapor, which is analyzed by absorption of a 254 nm resonance emission line by mercury atoms, background correction by Zeeman effect, and direct analysis of solids by pyrolysis. Mercury can be used for mercury detection of flue gas after enrichment by adsorption tube method.

Executive standard

HJ917-2017 "Measurement of gaseous mercury in fixed source of waste gas - Activated carbon adsorption / thermal cracking atomic absorption spectrophotometric method"

EPA Method 30B Determination of Gaseous Total Mercury in Coal Combustion Sources by Activated Carbon Adsorption Tube Method

Detection method:

The US EPA30B active adsorption tube flue gas detection method is a reference method for flue gas mercury emission detection. The method uses the adsorption tube to capture mercury in the flue gas for adsorption sampling, and then desorbs for concentration analysis, and can measure the total gaseous mercury concentration and the classified mercury concentration of the flue gas, ie (Hgo+ and Hg2+), the measurement result More accurate than the 30A method. This method is now widely used for the validation of routine online mercury mercury monitoring systems and has been used repeatedly for national and international research projects including the UNEP UN Mercury Project. The US EPA Mercury Monitoring Toolkit (MMT) is a Method 30 method that provides an efficient and convenient on-site solution package.

Flue gas sampling and detection systems mainly involve mercury adsorption sampling (EPA Method 30B Sorbent Trap), thermal analysis (EPA7473) and Zeeman effect atomic absorption spectroscopy (ZEEMAN-AAS). The system can realize all the monitoring items involved in the current pilot analysis of mercury emission testing of coal-fired power plants. Including: monitoring of mercury content such as waste gas, wastewater, solid waste, coal burning and fly ash.

Features:

1. It can directly analyze and detect mercury in samples such as food, soil, fuel, chemical products and biological tissues; it can be used for mercury detection of flue gas after adsorption by adsorption tube method;

2. The analyzer adopts high frequency Zeeman background subtraction technology, which is ultra-high selectivity and greatly reduces interference;

3. Wide dynamic detection range up to five orders of magnitude for analysis of ultra-high concentration samples;

4. Preset a variety of analysis modes, temperature real-time anti-control technology mode, reduce the interference of organic matter and chloride in the sample, no memory effect;

5. The analyzer does not need gold wire enrichment, catalytic tubes, carrier gas and other consumables, and the subsequent use and analysis cost is low;

6. Visualized mercury release interface, friendly user interface, easy to use and operate;

7. Built-in mercury saturated steam standard sample for calibration, ensuring high calibration stability;

8. Built-in air pump, automatic control of gas flow rate, no need for additional gas source;

9. The built-in power supply of the instrument can realize on-site portable field monitoring and directly detect the data directly;

10. Modular design for easy transportation and installation;

11. The expansion is strong, and the optional module meets the requirements of wastewater and air national standard detection.

12. Module composition

Flue gas sampling and detection system includes: flue gas mercury sampling system, activated carbon adsorption tube, mercury analysis and detection unit.

Analysis process

13. The analysis process is to use mercury special adsorption material (activated carbon, etc.) in the special adsorption tube, sample the flow rate in the chimney through the sampling probe, the mercury is enriched in the adsorption material, and the sampling flow rate and sampling time are recorded. The mercury analyzer was used to analyze the mercury content of the adsorbed material, and the mercury concentration in the flue gas was calculated by sampling flow rate and sampling time.

Technical Parameters

Detection limit: 0.05ppb

Injection quality: 10~500mg

Maximum concentration of sample detection: 200mg/Kg

Analysis time: 1~2 minutes

Power supply: 198~242VAC, 50Hz

Detection unit: detection unit

Size: 470*210*110mm

Weight: 7.5Kg

Injection unit: injection unit

Power supply size: 380*260*130mm

Power weight: 10Kg

Optical unit and pyrolysis unit size: 350*350*120mm

Optical unit and pyrolysis unit weight: 7.0 Kg

Dear customer,

We ,Xi’an Yima Opto-electrical Technology Com.,Ltd. is an integrated economic entity of R&D,manufacturing and trading with over 20 years of history .

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