Size distribution, chemical composition and acidity of mist aerosols in fertilizer manufacturing facilities in Florida

Hsu, Yu-Mei; Wu, Chang‐Yu; Lundgren, Dale A.; Birky, Brian K.

doi:10.1016/j.jaerosci.2007.10.008

Cited by 7 publications

(4 citation statements)

References 28 publications

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“…Since many of these sources were not present in the near vicinity of the current study site, so F -concentrations in all the seasons were found to be very low, and during monsoon season F -concentration was found to be lowest. In previous studies (Hsu and Chang, 2008), it has been reported that in presence of high relative humidity F -is mostly concentrated in 3.8-10 μm size ranges so may be due to this reason and due to washout by rainfall, F -concentration was found to be lowest in monsoon. PO 4 3-(phosphate) which is mainly originating from fertilizer production, crustal phosphate rocks (US EPA, Speciate, Version 3.2) shows a somewhat different trend, PO 4 3-concentration is maximum during summer followed by winter while lowest concentration is observed during monsoon period.…”

Section: Anion Concentrationsmentioning

confidence: 85%

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Chemical Characterization and Source Apportionment of Submicron (PM1) Aerosol in Kanpur Region, India

Chakraborty

Gupta

2010

Aerosol Air Qual. Res.

201

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PM 1 (particles having aerodynamic diameter < 1.0 µm) concentrations were measured at a sampling site inside the Indian Institute of Technology (IIT) Kanpur campus for 11 months from July, 2008-May, 2009. The sampling was carried out for all the major seasons of India and a total of 90 samples were collected. The chemical speciation data in terms of element and anion concentrations of all the collected samples were closely studied for any seasonal phenomena and different source contributions to PM 1 mass. Average PM 1 concentration was found to be highest (199 µg/m 3 ) during winter and lowest (31 µg/m 3 ) during monsoon season. Concentrations of different elements and anions also followed similar trend as PM 1 concentration. Nitrate and sulfate were the two most predominant anionic species contributing to almost 80%-90% of total anionic concentrations. Crustal elements (Ca, Mg, and Fe) were the main contributors within the total elemental concentrations. Overall, it was found that anions contributed up to 35% of the total PM 1 mass. Factor Analysis of chemical speciation data and UNMIX (Version 6) revealed that secondary sources and vehicular emissions were the two main sources contributing to PM 1 mass with minor contributions from paved road dust and coal combustion sources.

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Section: Anion Concentrationsmentioning

confidence: 85%

“…During summer, volatilization of NH 4 Cl may lead to the lower concentration of Cl - (Willison et al, 1989). Fluoride ions mainly originated from phosphate fertilizer generation (Hsu and Chang, 2008), marine aerosol etc. (US-EPA, Speciate, Version 3.2).…”

Section: Anion Concentrationsmentioning

confidence: 99%

Chemical Characterization and Source Apportionment of Submicron (PM1) Aerosol in Kanpur Region, India

Chakraborty

Gupta

2010

Aerosol Air Qual. Res.

201

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“…Aerosol pH can change the solubility of metals, such as iron and copper, which have been linked to aerosol toxicity, and at the same time affects nutrient distributions with impacts on photosynthesis productivity and ocean oxygen levels (Meskhidze et al, 2003;Nenes et al, 2011). Adverse health outcomes have been linked to aerosol acidity, including respiratory diseases (Raizenne et al, 1996), oxidative stress (Fang et al, 2017), and lung and laryngeal cancers (Hsu et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Size-resolved aerosol pH over Europe during summer

Pandis¹,

Ζακούρα²,

Kakavas³

et al. 2020

Preprint

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The dependence of aerosol acidity on particle size, location and altitude over Europe during a summertime period is investigated using the hybrid version of aerosol dynamics in the chemical transport model PMCAMx. The pH changes more with particle size in northern and southern Europe owing to the enhanced presence of non-volatile cations (Na, Ca, K, Mg) in the larger particles. Differences of up to 1-4 pH units are predicted between sub- and super-micron particles, while the average pH of PM1-2.5 can be as much as 1 unit higher than that of PM1. Most aerosol water over continental Europe is associated with PM1, while PM2.5-5 and PM5-10 dominate the water content in the marine and coastal areas due to the relatively higher levels of hygroscopic sea salt. Particles of all sizes become increasingly acidic with altitude (0.5-2 units pH decrease over 2.5 km) primarily because of the decrease in aerosol liquid water content (driven by humidity changes) with height. Inorganic nitrate is strongly affected by aerosol pH with the highest average nitrate levels predicted for the PM2.5-5 range and over locations where the pH exceeds 3. Dust tends to increase aerosol water levels, aerosol pH and nitrate concentrations for all particle sizes. This effect of dust is quite sensitive to its calcium content. The size-dependent pH differences carry important implications for pH-sensitive processes in the aerosol.

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“…the rubber industry, semiconductor industry, optoelectronics industry, carbon black manufacturing etc. ), most fluids which are released may atomize to form aerosols, which are a dispersion of liquid droplets in air [1][2][3][4][5][6]. These droplets have the potential to disperse over a larger area than is the case with bulk liquid.…”

Section: Introductionmentioning

confidence: 99%

Performance Study of SMPS and FDMA for Nanometer Aerosol Particle Measurements

Chang

Ming

Hong

et al. 2011

AMR

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A new method of Differential Mobility Analyzer (DMA) operation using a Fast Scanning Differential Mobility Analyzer (FDMA) nanometer particle sizer has been implemented. By optimizing the flow and voltage ramps, improvements can be made in the FDMA's measurement size range, counting statistics and resolution. In this study, an electrostatic classifier was used to generate mono-dispersed particles of different sizes to calibrate the delay time of the FDMA. The aerosol from incense combustion could be measured directly by FDMA although the particulate concentration was as high as 1,011 particles cm-3. The resolution of the FDMA was 3 nm and better than the SMPS (10nm).

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Size distribution, chemical composition and acidity of mist aerosols in fertilizer manufacturing facilities in Florida

Cited by 7 publications

References 28 publications

Chemical Characterization and Source Apportionment of Submicron (PM1) Aerosol in Kanpur Region, India

Chemical Characterization and Source Apportionment of Submicron (PM1) Aerosol in Kanpur Region, India

Size-resolved aerosol pH over Europe during summer

Performance Study of SMPS and FDMA for Nanometer Aerosol Particle Measurements

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