The chemistry of dews and frosts in indianapolis, Indiana

Foster, Jeffrey R.; Pribush, Robert A.; Carter, Bradley H.

doi:10.1016/0960-1686(90)90254-k

Cited by 36 publications

(18 citation statements)

References 26 publications

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“…This result is further strengthened as HCO − 3 anion in rainwater has been identified as one of the major anions in the Delhi region, North India, its concentration being found varying between 270 and 1032 µeq l −1 (Subramanian and Saxena, 1980). Similar results were reported for fogs and dews in Indianapolis, Indiana, where HCO − 3 accounted for, on average, 61% of total anion equivalents (Foster et al, 1990). Presumably, the balance of the HCO − 3 was derived from absorption of atmospheric CO 2 or sedimentation of other types of carbonates, such as Na 2 CO 3 or K 2 CO 3 , derived from fertilizers.…”

Section: Chemical Composition Of Fog-and Rainwatersupporting

confidence: 72%

“…This eluent, and the Na 2 CO 3 standard used to generate calibration curves, were kept closed to the atmosphere. The HCO − 3 concentration estimated from the standard curve was multiplied by the ratio of HCO − 3 to total carbonate species plus dissolved CO 2 at the sample pH (which was always too low for any significant CO 2− 3 to exist) (Foster et al, 1990). NH + 4 concentration was determined using a spectrophotometer (655 nm) after chemical reactions (for details see Xie and Wang, 1998).…”

Section: Chemical Analysismentioning

confidence: 99%

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Fog- and Rainwater Chemistry in the Tropical Seasonal Rain Forest of Xishuangbanna, Southwest China

Liu

Meng

et al. 2005

Water Air Soil Pollut

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Abstract. Fogwater, fog drip and rainwater chemistry were examined at a tropical seasonal rain forest in Xishuangbanna, southwest China between November 2001 and October 2002. During the period of observation, 204 days with the occurrence of radiation fog were observed and the total duration of fog was 1949 h, of which 1618 h occurred in the dry season (November to April), accounting for 37.0% of the time during the season. The mean pH of fogwater, fog drip and rainwater were 6.78, 7.30, and 6.13, respectively. The ion with the highest concentration for fog-and rainwater was HCO , and K + in fogwater samples collected in the dry season were significantly greater when compared to those collected in the rainy season. It was found that the ionic concentrations in fog drip were higher than those in fogwater, except for NH + 4 and H + , which was attributed to the washout of the soil-and ash-oriented ions deposited on the leaves and the alkaline ionic emissions by the leaves, since biomass burns are very common in the region and nearby road was widening.

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Section: Chemical Composition Of Fog-and Rainwatersupporting

confidence: 72%

Section: Chemical Analysismentioning

confidence: 99%

Fog- and Rainwater Chemistry in the Tropical Seasonal Rain Forest of Xishuangbanna, Southwest China

Liu

Meng

et al. 2005

Water Air Soil Pollut

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“…The dew pH in Indianapolis ranges between 6.0 and 7.2 (Foster et al, 1990), whereas the average dew pH in Arkansas, USA is 6.37 (Wagner et al, 1992). In Zadar, Croatia, the dew pH is between 5.5 and 7.8, with a mean of 6.7 (Lekouch et al, 2010).…”

Section: Ph Of Leaf Dewmentioning

confidence: 96%

Leaf dew contributes nutrients to paddies and improves rice growth

Yan

Zhu

2013

Acta Agriculturae Scandinavica, Section B - Soil & Plant Sc

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Leaf dew is an important input in farmland ecosystems, but information regarding the nutrients from leaf dew deposition in paddy fields is scarce. Leaf dew samples were monitored and collected in situ from the Sanjiang Plain paddy experimental station during the rice growing periods in 2008, 2009, and 2010. The pH and essential nutrients [ammonium nitrogen (NH þ 4 ÀN), nitrate nitrogen (NO À 3 ÀN), and phosphorus (P)] in paddy leaf dew were investigated, the nutrients in guttation and condensed dew were distinguished. In addition, the nutrient contributions of foliar fertilizer to Oryza sativa L (rice) were compared with those of leaf dew. The results indicate that the mean pH of leaf dew on rice is 6.3 (n 056), lower than the pH of rain and surface water. Condensed dew contributes about 97.7% of the nitrogen (N) and 95.7% of the phosphorus (P) in paddy leaf dew. Guttation provides a minor part of the N and P in leaf dew. The amount of leaf dewfall is much larger than the volume of foliar fertilization, with the amount of NH þ 4 ÀN, NO À 3 ÀN, and P deposition from leaf dew almost 100 higher than from foliar fertilization. Compared with foliar fertilizer, leaf dew is a natural and potential fertilizer. Leaf dew is an important pathway for nutrient transfer within paddies.

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“…The chemical properties of dew are driven by dissolution of surrounding gas and atmospheric particles that fall on the substrate. Studies have revealed that concentrations of chemical species in dew samples are much higher than in rain samples collected in the same areas (FOSTER et al, 1990;WANGER et al, 1992). Dew composition can be a good indicator of the level of atmospheric pollution in a geographical region of interest, because of the types and quantities of chemicals and materials transported by dew and the range of its interactions.…”

Section: Introductionmentioning

confidence: 99%

“…CHAMEIDES (1987) studied generation of acid dew from dry deposition of HNO 3 as well as SO 2 , using a model involving dynamical resistance, surface resistance, and reactions in dew droplets. No large variation in concentration of ions of various dew samples was reported by FOSTER et al (1990) over a 13-month period in Indiana, USA where the mean pH of dew samples was found to be 6.82. WANGER et al (1992) reported mean pH of dew samples of 6.37 and found that the concentrations of various ions in dew were several times those in rain, attributing this to the evaporation effect.…”

Section: Introductionmentioning

confidence: 99%

Chemical Composition of Dew Resulting from Radiative Cooling at a Semi-arid Site in Agra, India

Lakhani

Parmar

Prakash

2011

Pure Appl. Geophys.

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Dew samples were collected between October 2007 and February 2008 from a suburban site in Agra. pH, conductivity, major inorganic ions (F -, Cl -, NO 3 -, SO 4 2-, Na ? , K ? , Ca 2? , Mg 2? , and NH 4 ? ), and some trace metals (Cr, Sn, Zn, Pb, Cd, Ni, Mn, Fe, Si, Al, V, and Cu) were determined to study the chemistry of dew water. The mean pH was 7.3, and the samples exhibited high ionic concentrations. Dew chemistry suggested both natural and anthropogenic influences, with acidity being neutralized by atmospheric ammonia and soil constituents. Ion deposition flux varied from 0.25 to 3.0 neq m -2 s -1 , with maximum values for Ca 2? followed by NH 4 ? , Mg 2? , SO 4 2-, Cl -, NO 3 -, Na ? , K ? , and F -. Concentrations of trace metals varied from 0.13 to 48 lg l -1 with maximum concentrations of Si and minimum concentration of Cd. Correlation analysis suggested their contributions from both crustal and anthropogenic sources.

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The chemistry of dews and frosts in indianapolis, Indiana

Cited by 36 publications

References 26 publications

Fog- and Rainwater Chemistry in the Tropical Seasonal Rain Forest of Xishuangbanna, Southwest China

Fog- and Rainwater Chemistry in the Tropical Seasonal Rain Forest of Xishuangbanna, Southwest China

Leaf dew contributes nutrients to paddies and improves rice growth

Chemical Composition of Dew Resulting from Radiative Cooling at a Semi-arid Site in Agra, India

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