How New Technologies Are Revolutionizing the Way We Measure PM2.5

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How New Technologies Are Revolutionizing the Way
We Measure PM2.5
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• Air quality impacts both our health and the
  environment, making it a topic of significant
  concern and study. Air pollution, caused by
  various natural and human activities, has become
  a pressing global issue, and understanding it in
  depth is vital in safeguarding our planet and
  ensuring a healthier future for generations to
  come. One of the major contributing factors to
  poor air quality is PM2.5.

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What makes particulate matter so important to
measure?

• Particulate matter (PM) is a mixture of solid
  particles and liquid droplets found in the air.
  PM2.5 is a type of PM that is 2.5 micrometers or
  less in diameter. These particles are so small
  that they can penetrate deep into the lungs and
  cause various health problems, including
  respiratory infections, heart disease, and
  cancer.
• Outdoor air pollution, including PM2.5, was
  responsible for approximately 4.2
  million premature deaths worldwide in 2019. With
  more than 90 of the worlds population living in
  places where the WHO air quality guidelines
  levels were not met, it is now more important
  than ever to measure PM2.5 and other pollutants.

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To reduce the effect of PM2.5 pollution on
health, it is essential to measure it. Some
benefits include

• Identifying areas with high levels of PM
  pollution, which can then be targeted for
  clean-up efforts.
• Tracking trends and patterns in PM pollution over
  time.
• Developing and implementing products or policies
  to reduce PM pollution and protect public health.
• In this blog, we will cover the different methods
  of measuring PM2.5 and discuss why it is now more
  important than ever to involve modern
  technologies in this process.

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The traditional way of measuring PM2.5

• The conventional way of measuring PM2.5 is to use
  a reference method called the gravimetric method.
  This method involves collecting PM2.5 particles
  on a filter and then weighing the filter to
  determine the concentration of PM2.5. The
  gravimetric method is accurate but it is
  also tedious, time-consuming, and expensive,
  making it an inefficient method.

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New technologies for measuring PM2.5

• In recent years, several new technologies have
  been developed for measuring PM2.5. These
  technologies are more
• affordable and more accessible to use than the
  gravimetric method.
• Optical spectroscopy One of the most promising
  new technologies for measuring PM2.5 is optical
  spectroscopy. Optical spectroscopy uses light to
  measure the size and concentration of PM2.5
  particles. Optical spectroscopy is accurate and
  fast, and it can be used to measure PM2.5 in real
  time.
• Laser scattering Another promising new
  technology for measuring PM2.5 is laser
  scattering. Laser scattering uses a laser beam to
  measure the size and concentration of PM2.5
  particles. Laser scattering is accurate and fast,
  and it can be used to measure PM2.5 in real time.
• Beta Attenuation Monitor The Beta Attenuation
  Monitor (BAM) is a widely used method for
  measuring airborne particulate matter (PM)
  concentrations, specifically focusing on PM2.5
  and PM10. The BAM measurement method is based on
  the principle of beta attenuation, which involves
  the attenuation (reduction) of beta radiation as
  it passes through a filter loaded with
  particulate matter. The beta radiation source
  used in the BAM is typically a radioactive
  isotope, such as promethium-147 (Pm-147), which
  emits beta particles.

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• The BAM method provides continuous real-time
  measurements of PM2.5 concentrations, allowing
  for near-instantaneous data availability. It is
  widely used and recognized as a standard method
  for regulatory compliance monitoring and research
  purposes.
• Particulate Testing One of the most interesting
  modern methods is particulate testing.
  Particulate testing is the process of measuring
  the concentration of particulate matter in a
  given environment. Particulate matter is a
  mixture of solid particles and liquid droplets
  suspended in the air. It can be generated from
  various sources, including combustion, industrial
  processes, and natural sources such as dust and
  pollen.

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Several different methods for particulate testing
include

• Sieving This method involves passing a sample of
  air through a series of sieves with different
  mesh sizes. The particles trapped on the sieves
  are then weighed to determine the concentration
  of particulate matter.
• Impaction This method directs a stream of air at
  a surface coated with a sticky material. The
  particles in the air are then impacted onto the
  surface and can be counted or weighed.?
• Optical microscopy This method uses a microscope
  to count and measure the size of particles in a
  sample of air.

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Newer methods for particulate testing include

• Inductively coupled plasma mass spectrometry
  (ICP-MS) This method uses a high-energy plasma
  to ionize particles in a sample of air. The ions
  are then separated and measured by their mass to
  determine the concentration of different types of
  particulate matter.?
• Total suspended particulate (TSP) This method
  measures the total mass of particulate matter in
  a sample of air.
• The choice of particulate testing method depends
  on many factors, including the size of the
  particles to be measured, the concentration of
  particulate matter in the air, and the desired
  accuracy of the results.

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What are the benefits of using new technologies
to measure PM2.5?

• There are a number of benefits to using new
  technologies to measure PM2.5.
• New technologies are more affordable and have no
  such maintenance costs. This makes it possible
  for more people to measure PM2.5, which can help
  to improve air quality monitoring.
• These are also easier to use than the
  gravimetric method. This makes it possible for
  people with less technical expertise to measure
  PM2.5, which can help to expand the reach of air
  quality monitoring. 
• New technologies can be used to measure PM2.5 in
  real time. This allows people to take action to
  protect their health when PM2.5 levels are high,
  making it highly beneficial. There are also data
  accessibility and analysis opportunities on a
  personalized dashboard.
• Data calibration and monitoring take only a few
  seconds with these devices.

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How do we measure PM2.5 at Ambee?

• Traditional methods for tracking air pollution
  have remained the same since the 1900s, which can
  be seen as outdated and inefficient. These
  methods are not scalable and only cover a minimal
  portion of a city, leaving the majority
  unmonitored. Despite these limitations,
  governments are compelled to utilize this
  technology due to a need for alternatives.
• At Ambee, we combine data from on-ground
  sensors, remote imagery from satellites, and
  other sources. Our proprietary models measure,
  process, and analyze data from over a dozen
  sources, processing many terabytes of data every
  day.
• We also provide sensors to monitor city-wide air
  quality and emission levels. These devices use
  use low-cost sensors for continuous AQ
  monitoring. These sensors work on the
  Non-Dispersive Infra-Red (NDIR) principle, widely
  accepted as the industry standard at this level.
  Ambees sensors are extremely reliable, as proven
  in tests and real-world scenarios, with uptime
  for all the devices at approximately 98.8.
• Learn more about Ambees IoT-Enabled sensor
  network here.

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• To derive meaningful insights, we employ our
  proprietary artificial intelligence and
  sophisticated data science and analytics
  methodologies. By harnessing the power of these
  technologies, we can generate air quality data at
  a granular level, precisely pinpointing air
  pollution information down to individual zip
  codes. This enables us to provide a comprehensive
  and accurate representation of air quality,
  empowering governments and communities to make
  informed decisions and take necessary actions to
  address air pollution issues.
• We use globally valid data that follows US EPA
  standards to provide relevant recommendations.

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Measuring and monitoring particulate matterThe
future

• As we know, new technologies are revolutionizing
  how we measure PM2.5 due to their affordability
  and ease of use. As a result, they are making it
  possible for more people to measure PM2.5, which
  can help to improve air quality monitoring and
  protect public health.
• The help of technologies like air quality
  sensors and a combination of different methods to
  generate one highly accurate dataset to measure
  PMs is the best way forward for the betterment of
  human and planetary health. This can help reduce
  outdoor air pollution and initiate indoor air
  quality measurement for a safer future.