Air Pollution

Atshuller, A P.

doi:10.1021/ac60198a001

Cited by 5 publications

(1 citation statement)

References 58 publications

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“…Pure glutaric acid particles have been shown to act as cloud condensation nuclei by absorbing water at typical atmospheric conditions for cloud formation (26)(27)(28). Pinonic acid is a major product of the ozone oxidation of R-pinene and major biogenic secondary species (29)(30), given that Rand β-pinene are the most abundant monoterpenes (31)(32)(33). Therefore, because of their observed abundance in the atmosphere and potential effect on the hygroscopic properties of preexisting inorganic aerosol, glutaric and pinonic acid were chosen for this study.…”

Section: Introductionmentioning

confidence: 99%

Deliquescence and Hygroscopic Growth of Mixed Inorganic−Organic Atmospheric Aerosol

Cruz

Pandis

2000

Environ. Sci. Technol.

407

454

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Deliquescence and hygroscopic growth measurements were performed for four internally mixed aerosol mixtures: NaCl-glutaric acid, NaCl-pinonic acid, (NH4)2SO4-glutaric acid, and (NH4)2SO4-pinonic acid with varying organic mass fractions (0, 0.2, 0.5, 0.8, and 1.0). No effect on the deliquescence relative humidity of the salts was observed for any of the organic mixtures tested. The NaCl-organic mixed aerosols deliquesced at a relative humidity (DRH) 75 ± 1% and the (NH4)2SO4-organic aerosol at 79 ± 1% independent of organic mass fraction. The growth factors at RH = 85 ± 1%, G(85%), were also measured for the different aerosol mixtures. There was an observed decrease in G(85%) with increasing mass fraction of the organic. Measured G(85%) for the mixtures can be approximated as a first step with the assumption that the species absorb water independently. Overall, the organic portion was observed to enhance the water uptake of the (NH4)2SO4-organic aerosol systems by as much as a factor of 2−3 for particles consisting of 80% organic acids. The NaCl-organic mixtures presented evidence of positive and negative interaction depending on organic mass fraction, ranging from a 40% decrease to an 20% increase in water uptake as compared to that by the inorganic fraction alone.

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Section: Introductionmentioning

confidence: 99%

Deliquescence and Hygroscopic Growth of Mixed Inorganic−Organic Atmospheric Aerosol

Cruz

Pandis

2000

Environ. Sci. Technol.

407

454

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Chromatographic Techniques in Industrial Hygiene

Hahne

2000

Encyclopedia of Analytical Chemistry

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Chromatographic techniques in industrial hygiene are defined as those separation and analysis techniques which rely on the separation of multiple chemical constituents by taking advantage of the differential adsorption, absorption, mobility, or affinity of the components in a system with a stationary phase (solid, liquid coated on solid, reactive substituent attached to solid surface, ion exchange resin, etc.) and a mobile phase (gas or liquid) which transports the separated constitutents to a detector for immediate identification and possible quantitation or to a collector for later identification and possible quantitation. By industrial (occupational) hygiene is meant that science and art which is the anticipation, identification, assessment, and control of chemical and physical hazards in the workplace (meant to include offices, places of business, retail establishments, and schools) and home. Included among those methods that make possible the identification and assessment of such hazards are those methods which are used to determine the concentration of airborne and surface chemical contaminants, as well as those which assess levels of exposure to chemical contaminants by the analysis of exhaled breath, blood, urine, or other biological samples.

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Chromatographic Techniques in Industrial Hygiene

Hahne,

LeBouf

2016

Encyclopedia of Analytical Chemistry

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Chromatographic techniques in industrial hygiene are defined as those separation and analysis techniques that rely on the separation of multiple chemical constituents by taking advantage of the differential adsorption, absorption, mobility, or affinity of the components in a system with a stationary phase (solid, liquid coated on solid, reactive substituent attached to solid surface, ion‐exchange resin, etc.) and a mobile phase (gas or liquid) that transports the separated constituents to a detector for immediate identification and possible quantitation or to a collector for later identification and possible quantitation. By industrial (occupational) hygiene is meant that science and art, which is the anticipation, identification, assessment, and control of chemical and physical hazards in the workplace (meant to include offices, places of business, retail establishments, and schools) and home. Included among those methods that make possible the identification and assessment of such hazards are those methods that are used to determine the concentration of airborne and surface chemical contaminants, as well as those that assess levels of exposure to chemical contaminants by the analysis of exhaled breath, blood, urine, or other biological samples.

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Air Pollution

Cited by 5 publications

References 58 publications

Deliquescence and Hygroscopic Growth of Mixed Inorganic−Organic Atmospheric Aerosol

Deliquescence and Hygroscopic Growth of Mixed Inorganic−Organic Atmospheric Aerosol

Chromatographic Techniques in Industrial Hygiene

Chromatographic Techniques in Industrial Hygiene

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