Calculate the lifetime of gaseous sulfuric acid (H2SO4) in the presence of aerosol particles with an average diameter of 100 nm and a number density of 7000 particle cm-3. Assume air temperature of 11 °C and an uptake probability of sulfuric acid of 0.96. What is transport scale of sulfuric acid? ('hundreds of meters' or 'tens of kilometers'.)
Answers
Answer:
Explanation:
The main chemical in the creation of new atmospheric particles is sulfuric acid (H2SO4, SA). It is essential to monitor its concentration using delicate equipment, such as chemical ionisation (CI) inlets connected to air pressure interface time-of-flight (APi-TOF) mass spectrometers. There are, nevertheless, certain environmental factors.
For and physical reasons, such as at distant locations or during flight measurements with chemical restrictions, chemical ionisation cannot be employed.
Here, we suggest a theoretical approach for estimating the SA concentration from observations of ambient ion composition and concentration obtained solely by APi-TOF.
From calculating the SA concentration and verifying it using precise CI-APi-TOF measurements, we construct a theoretical expression.
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Answer:
We propose a theoretical approach for estimating SA concentration from APi-TOF observations of ambient ion composition and concentration.
Explanation:
Sulfuric acid is the primary chemical involved in the formation of new atmospheric particles (H2SO4, SA). Chemical ionisation (CI) inlets connected to air pressure interface time-of-flight (APi-TOF) mass spectrometers are essential for monitoring its concentration. Nonetheless, there are some environmental factors to consider.
Chemical ionisation cannot be used for technical or physical reasons, such as in remote locations or during flight measurements with chemical constraints.
We propose a theoretical approach for estimating SA concentration from APi-TOF observations of ambient ion composition and concentration.
We construct a theoretical expression by calculating the SA concentration and verifying it with precise CI-APi-TOF measurements.
Because of the increasing prevalence of airborne engineered nanoparticles or ultrafine particles, counting and sizing of polydisperse airborne nanoparticles has received the most attention. Based on ion diffusion charging and electrical detection, we present a miniature aerosol sensor for detecting the particle size distribution of polydisperse ultrafine particles. The aerosol sensor is made up of a couple of planar electrodes printed on two parallel circuit boards, with charging, precipitation, and measurement sections integrated into a single chip that can detect aerosol particle sizes ranging from 30-500 nm.
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