The new HJ653 Technical Requirements support the optical technology: What you need to know and how Palas® can help you

At the beginning of the new year, the Ministry of Ecology and Environment released a revised national ecological environment standard with the title: “Technical Requirements and Detection Methods of Continuous Automatic Monitoring System for Ambient Air Particulate Matter (PM10 and PM2.5)”. This new HJ 653-2021 regulation, better known as HJ 653 Technical Requirements, is a game-changer. It is designed to help further reduce the concentration of ambient particulate matter by supporting optical monitoring technology.

Why are the new HJ653 Technical Requirements needed?

In recent years, China’s atmospheric environmental governance has achieved remarkable results. Because particulate matter is still the main pollutant in the ambient air of many cities further action needs to be taken: With the HJ653 Technical Requirements the Department of Ecological Environment and Environmental Monitoring and the Department of Regulations and Standards combine two aspects: The current development of ambient air particulate matter automatic monitoring technology and the need of an efficient atmospheric environmental quality management.

The Optical Technology in focus

To improve the performance indicators of automatic monitoring instruments for ambient air particulate matter, the new HJ 653 Technical Requirements brings changes based on two key aspects:

Stricter specifications
on the technical performance of automatic monitoring instruments for ambient air particulate matter. The regulations on the hardware configuration and parameter setting of the instrument aim to lead to an improvement of the monitoring results, by enhancing the quality of the monitoring data.
Opening to new technologies
regarding relevant foreign standards. The compatibility of instrument principles is maintained, and technological innovation and development are encouraged by lifting limitations to certain methods. That means, in addition to the commonly used β-ray absorption method or the micro-oscillation balance method now the optical technology comes into focus.

Palas® – a renowned expert in optical technology

Fidas® Single Particle Aerosol Distribution Spectrometer by Palas®, uses light to monitor particulate matter for Palas®expanding the range of applications. It also removes technical barriers for instruments using different method principles to enter PM2.5 and PM10 monitoring.

Users can benefit from the innovation and maturity of optical technology with significant cost advantages. In the European and American markets, optical instruments are on the rise. In 2019, the installed base of PM monitoring instruments with the optical method in Europa has exceeded the number of instruments with other technologies. In the United States, instruments based on the pure light method are also becoming mainstream instruments in the market. The HJ 653 Technical Requirements embracing this monitoring technology trend, will support technological innovation and enables more options to choose from.

Accurate and stable optical measuring instrument. Fidas 200 system product advantages:

· Obtained TÜV Rheinland certification;
· One is worth five: PM1, PM2.5, PM10, TSP, particle size distribution information; One of the instruments measures PM2.5 and PM10 at the same time, effectively avoiding data inversion;
· Particle size distribution information down to 180nm (180nm-18um). Covering traffic pollution emissions from aerosols to dust particles, and providing particle size information for traceability;
· High time resolution: 1-second interval, suitable for navigation monitoring;
· Low maintenance, low consumption, high data availability: Basically no consumables, the measurement cycle is 60/60 minutes, 99% per year
· Accurate data: lower extended measurement uncertainty compared to other devices, very good inter-instrument correlation

Tests to prove the efficiency of optical monitoring

Palas® Fidas® is based on the principle of the patented single particle counting aerosol spectrometer. It is the pioneer in the optical monitoring instrument for particulate matter and the leading brand in the European market. At present, Fidas® is undergoing a formal comparison test according to the requirements of “HJ 653 Technical Requirements”. Palas® looks forward to cooperating with more partners and owners to jointly serve the market demand for particle monitoring!

Some test data display:

PM2.5: Comparison result between Fidas 200 smart and gravimetric method, slope 0.9969, intercept -0.2942, R=0.999

PM10: Comparison result between Fidas 200 smart and gravimetric method, slope 1.0097, intercept 1.5114, R=0.983

Fidas® Single Particle Aerosol Distribution Spectrometers (SPADS)

Applications：
· Regulatory pollution control in monitoring networks
· Long-term studies of particles
· Mobile navigation monitoring
· Emission dispersion studies

Palas® China will arrange a series of online webinars both in English and Chinese for Ambient air quality continuous monitoring system, Palas SMPS scanning mobility particle sizer, Palas Promo & Aerosol Generator & Dilution system, ISO 16890 filter media tester, Palas MFP 3000 G, ISO 29463-3 filter media tester, Palas MFP Nano plus 4000, ISO 17536 Fractional filtration efficiency tester of Oil Mist Separator, Palas HMT 1000, as well as Particle Distribution Measurement Devices Introduction – Optical Scattering Method and many other solutions. If interested in the webinars for our products, you are more than welcome to register on our official website and get the latest webinar plan!

Topic：New HJ653 and Proven Palas^® Single Particle Count Aerosol Size Distribution Spectrometer Technology