Phenol and nitrophenols in the air and dew waters of Santiago de Chile

Rubio, Marı́a A.; Lissi, Eduardo; Herrera, Natalia; Pérez, Viviana; Fuentes, Natalia

doi:10.1016/j.chemosphere.2011.11.046

Cited by 52 publications

(60 citation statements)

References 40 publications

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“…In contrast, during haze, ion concentrations increased and the decreasing order of ionic concentrations in airborne particles changed to SO 4 2…”

Section: Ionic Compositionmentioning

confidence: 99%

“…We found that ion concentrations in both dew and particulate matter of the atmosphere were similar (Figure 2). In decreasing order of ionic concentration, airborne particles comprised SO 4 2…”

Section: Ionic Compositionmentioning

confidence: 99%

“…Because of urban surface hardening and the heat island effect, not only is the frequency of dew occurrence in urban ecosystems high, but also the condensation quantity is large [1,2]. The dew condensation process represents effective natural atmospheric purification [3,4]. Airborne particles can be captured as condensation nuclei as dew condenses, whereas gases or liquid particles might dissolve into the dewdrops [5].…”

Section: Introductionmentioning

confidence: 99%

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Recognizing Dew as an Indicator and an Improver of Near-Surface Air Quality

Xu¹,

Zhu²

2017

Advances in Meteorology

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The relationship between dew and airborne particles is important in urban ecosystems, but the capability of dew to remove airborne particles remains unclear. During 2015 in Changchun, China, 74 dew and particle samples were collected simultaneously to investigate their chemical characteristics under normal, fog, and haze conditions. Analyses included measuring total dissolved solids, total suspended particulates, PM 2.5 and PM 10 concentrations, major cations (NH 4 + , Na + , K + , Ca 2+ , and Mg 2+ ), major anions (F − , Cl − , SO 4 2− , and NO 3 − ), and organic and elemental carbon. Results showed that air quality deteriorated during haze but improved in fog. The particle size distributions, major cations, and carbonaceous species documented in the dew and airborne particles demonstrated consistent synchronous patterns with values descending in the order haze > normal > fog conditions. We found that dew is a good indicator of near-surface air quality. Specifically, its water-soluble ions and carbonaceous species could be used to distinguish emission sources and to identify the presence of secondary organic carbon. Dew is more effective at removing airborne particles in normal weather than in haze or fog conditions; PM 2.5 removal rates were 21.5%, 15.2%, and 13.7% on normal, foggy, and hazy days, respectively. Dew condensation processes reduce concentrations of gaseous and particulate pollutants in the near-surface layer.

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“…In contrast, during haze, ion concentrations increased and the decreasing order of ionic concentrations in airborne particles changed to SO 4 2…”

Section: Ionic Compositionmentioning

confidence: 99%

Section: Ionic Compositionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Recognizing Dew as an Indicator and an Improver of Near-Surface Air Quality

Xu¹,

Zhu²

2017

Advances in Meteorology

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“…Dew provides nutrients (N, P, and K) to plants [2,3]. During dew formation, the small aerosol in the atmosphere is the condensation nucleus and is important in air purification [4]; furthermore, dew can reveal air pollution status and act as an air quality indicator [5,6]. Accurate measurement of dew condensation quantity is important, and problems involving dew-monitoring methods have become the focus of domestic and overseas studies.…”

Section: Introductionmentioning

confidence: 99%

A novel method for monitoring urban dew condensation and its application

Zhu

Sun

et al. 2017

Teh. vjesn.

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Original scientific paper Dew is crucial moisture input for the water balance of urban ecosystems. Dew, which is an important environmental factor of urban ecosystem, can be easily absorbed by plant leaves and provide nutrients (N, P, and K) to plants. Moreover, dew formation is important in air purification. However, few internationally accepted standard methods or instruments are currently available for measuring dew amount in urban ecosystems because of the small dew amount. In order to accurately measure the night water vapour condensation and evaluate the effects of surface hardening to near-surface water cycle, this study monitored dew condensation and combined dew with leaf area index, and a novel method was proposed for monitoring and calculating dew amount in different underlying surfaces in urban ecosystems. The Changchun City in China was considered as an example and the proposed method was used to observe dew condensation in different functional areas of the city during the frost-free period (April 2016 to October 2016). Finally, the main meteorological factors affecting dew condensation were analyzed by summarizing the rule of vapour condensation; moreover, dew intensity and annual dewfall of different landscapes were obtained. Results indicate that greenbelt landscapes are important sites for dew deposition. The landscapes of dew intensity, in descending order, are greenbelt landscape, bare landscape, and road landscape (P < 0.01). Relative humidity is the main factor affecting water vapour migration. Dewfall amounts in the greenbelt, road, and bare landscapes are 61.43, 0.56, and 1.23 mm, respectively. The annual dewfall is 22.98 mm in Changchun according to the proportion of each landscape. The dew-monitoring method system in urban area is improved and the wet deposition from vapour condensation of different surfaces underlying at night is added. The method provides theoretical reference for further research on revealing the near-surface water cycle. Keywords: dew intensity; dewfall; landscape; urban ecosystem Nova metoda za praćenje kondenzacije rose u gradu i njezina primjenaIzvorni znanstveni članak Rosa predstavlja unos vlage bitan za održavanje razine vode gradskih ekosustava. Rosu, koja je važan ekološki faktor gradskih ekosustava, lišće biljaka lako apsorbira i tako se opskrbljuje hranjivim tvarima (N, P i K). Osim toga, stvaranje rose važno je u pročišćavanju zraka. Ipak, ima malo internacionalno prihvaćenih standardnih metoda ili instrumenata trenutačno raspoloživih za mjerenje količine rose u urbanim ekosustavima, zbog male količine rose. U svrhu točnog mjerenja kondenzacije vodene pare noću i procjene učinaka stvrdnjavanja površine na tokove vode blizu površine, u radu se prati kondenzacija rose i kombinira rosa s indeksom površine lista te se predlaže nova metoda za praćenje i izračunavanje količine rose u različitim površinama urbanih ekoloških sustava. Grad Changchun u Kini uzet je kao primjer i predloženom metodom se promatrala kondenzacija rose u njegovim različitim funkcionalnim ...

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“…They therefore belong to the group of the eleven most pollutant phenols described by the EPA 6,7 . In addition, most of these compounds are deposited in water and soil, including rainwater 8 , wastewater effluent from various industries 9 and drinking water. In humans, most nitrophenols are absorbed through the skin, the gastrointestinal tract or the lungs through inhalation of fine droplets 10 .…”

Section: Introductionmentioning

confidence: 99%

Study of the Removal of 4-Nitrophenol From Aqueous Media by Adsorption on Different Materials

Matus

Camu

Villarroel

et al. 2016

J. Chil. Chem. Soc.

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The removal of 4-Nitrophenol (4-NP) from aqueous media by adsorption is studied in a batch system using different porous materials: activated carbon, zirconia, alumina, sepiolite, natural zeolite and 13X zeolite. Depending on their adsorption capacities, the best adsorbent was chosen to be impregnated with different levels of nickel (Ni) in order to study the adsorption by π-complexation in batch and continuous systems. The samples of Ni(x)/support (x= 2, 4, 6%) were prepared by wet impregnation and were characterised using the same method as with all the materials, by N 2 adsorption-desorption using the BET method, surface acidity and Z potential measurements by electrophoretic migration. The samples were measured in a UV-Vis electrophotometer at a wavelength of 318 nm, while the adsorption capacity of the material in the batch system was determined by calculating the difference in concentration once the adsorbent became saturated after an initial concentration of ~20 ppm, and in the continuous system this was done by integrating the area under the adsorption curve. The results suggest that adsorption capacity depends on the specific BET area, apparent acid strength and the IEP of each support, and that it varies with the addition of Ni.

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Phenol and nitrophenols in the air and dew waters of Santiago de Chile

Cited by 52 publications

References 40 publications

Recognizing Dew as an Indicator and an Improver of Near-Surface Air Quality

Recognizing Dew as an Indicator and an Improver of Near-Surface Air Quality

A novel method for monitoring urban dew condensation and its application

Study of the Removal of 4-Nitrophenol From Aqueous Media by Adsorption on Different Materials

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