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Haze pollution is inseparable from the transformation of air pollutants especially the ammonium and sulfate. Chemical and physical processes play important roles in this transformation. However, the role of microbial processes has rarely been studied. In this report, we applied the cultivation-independent metagenomic approach to study airborne microorganisms, investigating the potential microbial-catalyzed transformation of ammonium and sulfate in PM samples. Functional genes predict that airborne microorganisms have the potential to catalyze ammonium formation but not ammonium oxidation since no ammoxidation genes were identified. We also found that the frequency of sulfate-forming genes was 1.56 times of those for sulfate-reducing genes. It was speculated that microbial metabolisms in the atmosphere could contribute to the accumulation of ammonium and sulfate. With the increase of PM concentration, the frequency of functional genes and the relative abundance of genera which involved in nitrogen and sulfur metabolisms increased. That suggested air pollution was conducive to the microbial-mediated formation of ammonium and sulfate. Overall, our results provided evidence for the possible role of microbial processes in the air pollutant transformation and brought a new perspective for studying the formation of secondary air pollutants.
This article was published in the following journal.
Name: Environmental pollution (Barking, Essex : 1987)
Antrodia cinnamomea is an important medicinal fungus in Taiwan. This study demonstrates changes of complex sulfated polysaccharides (SPS) by fungus A. cinnamomea after ammonium sulfate-feeding and eva...
The present work is an extensive laboratory study of organosulfate (OS) formation from the reaction of α-pinene oxidation products or proxies with acidified ammonium sulfate aerosols in three differe...
Atmospheric sulfate aerosols have important impacts on air quality, climate, and human and ecosystem health. However, current air-quality models generally underestimate the rate of conversion of sulfu...
The heterogeneous reactions of sea salt single droplets with the mixture of O and SO were studied in real time using microscopic Fourier transform infrared (micro-FTIR) spectrometer. Chemical conversi...
The atmosphere is an important route for transporting and disseminating microorganisms over short and long distances. Understanding how microorganisms are distributed in the atmosphere is critical due...
This study is a pooled statistical analysis of the data from 2 studies concerning efficacy of ammonium-succinate based dietary supplement. In both studies group 1 took the ammonium-succina...
This study examines the efficacy of a non-thermal, atmospheric plasma device in the treatment of a number of different skin disorders
Dental plaque is a well known etiologic factor for gingivitis. Recently, herbal extracts are a matter of scientific interest to inhibit plaque accumulation on teeth. The purpose of this st...
This study uses a crossover study design to examine the impact of a two-week bedroom based indoor air filtration on the concentration of indoor airborne pollutants, personal exposure to ai...
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Derivatives of chondroitin which have a sulfate moiety esterified to the galactosamine moiety of chondroitin. Chondroitin sulfate A, or chondroitin 4-sulfate, and chondroitin sulfate C, or chondroitin 6-sulfate, have the sulfate esterified in the 4- and 6-positions, respectively. Chondroitin sulfate B (beta heparin; DERMATAN SULFATE) is a misnomer and this compound is not a true chondroitin sulfate.
Sulfuric acid diammonium salt. It is used in CHEMICAL FRACTIONATION of proteins.
An enzyme that catalyzes the activation of sulfate ions by ATP to form adenosine-5'-phosphosulfate and pyrophosphate. This reaction constitutes the first enzymatic step in sulfate utilization following the uptake of sulfate. EC 22.214.171.124.
3'-Phosphoadenosine-5'-phosphosulfate. Key intermediate in the formation by living cells of sulfate esters of phenols, alcohols, steroids, sulfated polysaccharides, and simple esters, such as choline sulfate. It is formed from sulfate ion and ATP in a two-step process. This compound also is an important step in the process of sulfur fixation in plants and microorganisms.
The atmospheric properties, characteristics and other atmospheric phenomena especially pertaining to WEATHER or CLIMATE.