Experimental study of the scavenging process by means of a sequential precipitation collector, preliminary results

Durana, Nieves; Casado, H.; Ezcurra, A.; Garcı́a, Carlos; Lacaux, Jean‐Pierre; Dinh, Pham Van

doi:10.1016/0960-1686(92)90373-s

Cited by 29 publications

(9 citation statements)

References 11 publications

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“…The negative or weak correlation between major ions concentration and rain intensity for all rain events except for K + and NO3sampled on December 05 th , 2007 was found (Table 1). The same results were emerged by (Ames et al, 1987;Durana et al, 1992;Gatz and Dingle, 1971).…”

Section: Determination Of the Relationship Between The Elements Of Thsupporting

confidence: 79%

Chemical Analysis of Wet Deposition Sequential Samples at Istanbul, Turkey

Oruc¹,

Akkoyunlu²,

Dogruel³

et al. 2018

Uluslararası Muhendislik Arastirma Ve Gelistirme Dergisi

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In this study, the relations between wet deposition fluxes of major ions, concentrations and rain intensity in the precipitation events occurring on a) November 10 th , 2007 and b) December 05 th , 2007 are presented. The variations on the ion concentrations were investigated during the rain events. The concentrations of all ions drastically decreased to minimum levels in the first sub sequential events for each the rain events. Some ions had a significant decrease in concentrations in comparison with other ions, because they have higher concentration in the atmosphere as much as they exist in the large atmospheric particles which are being sourced from in the soil or sea. The strongest relation between the wet deposition flux and the rain intensity were found for Ca 2+ and SO4 2among the all the ions sampled on November 10 th , 2007. It was found that K + and NO3concentrations sampled on December 05 th , 2007 had a positive correlation with rain intensity; on the other hand, other ions had a negative correlation. Positive correlations were found between wet deposition flux and the rain intensity for all ions in each rain events.

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Section: Determination Of the Relationship Between The Elements Of Thsupporting

confidence: 79%

Chemical Analysis of Wet Deposition Sequential Samples at Istanbul, Turkey

Oruc¹,

Akkoyunlu²,

Dogruel³

et al. 2018

Uluslararası Muhendislik Arastirma Ve Gelistirme Dergisi

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“…The atmospheric conditions in this rain event were regarded as stable because there were no remarkable changes in the wind direction and velocity. The observed fluctuation of concentrations was found also in an earlier study 50) under fairly stable meteorological conditions. b) ASI group NO 3 -, nss-SO 4 2-, NH 4 + , and F -of the ASI group in Fig.4(d) showed similar behavior to those of the SSI group in Fig.4(c), also reflecting the "wash-out" effect.…”

Section: R1 (%)supporting

confidence: 61%

“…Another earlier study 49) showed that each concentration of Cl -, NH 4 + and SO 4 2-was high in the initial period, thereby reflecting the effects of "wash-out" by the precipitation. Durana et al 50) demonstrated that, for rain events under stable meteorological condition and in areas without local pollution, the concentration of rain components was high during the initial period. It then decreased rapidly.…”

Section: R1 (%)mentioning

confidence: 99%

FLUCTUATION OF ION COMPONENTS, TRACE METALS, AND Pb/Zn RATIO IN PRECIPITATION AT TSU CITY

et al. 2014

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To elucidate the air pollution, its features, its sources, and the influence of yellow sand (kosa) in Tsu City, the ion components and trace metals in precipitation at Mie University were measured along with their temporal changes. From the obtained correlation coefficients and the results of the principal component analysis, the ions and the trace metals in the precipitation were classified into three groups: the SSI group (the ions of Cl -, Na + , K + , Mg 2+ , ss-SO 4 2-and ss-Ca 2+ , of which the main sources were sea salt); the ASI group (the ions of F -, NO 3 -, NH 4 + , nss-SO 4 2-and nss-Ca 2+ , of which the main sources were anthropogenic pollution and soil); and the ASM group (trace metals of Al, Fe, Mn, Pb, and Zn, of which the main sources were anthropogenic pollution and soil). The concentrations of the SSI group tended to be higher with increased wind velocity. Results suggest that seawater was raised into the atmosphere in proportion to the wind velocity, and that the sea salt ions were transported and increased in the precipitation. The effects of long-range transport and local pollution on the pollutants and the soil elements in the precipitation were discussed from measurements of the concentration ratios of Pb and Zn (Pb/Zn) and backward trajectory analysis. The concentrations of ion components and trace metals during the rain events in Tsu City, Mie generally decreased over time. The condensed pollutants in the air are regarded as removed in the initial period of the rain events. We can confirm that the concentration ratios (Pb/Zn ratios) are almost identical to reported values for rain clouds through Japan. Only one day showed high rates of pollutants, but it is presumed to be not the effect of kosa but of the industrial zone to the north east of Tsu City.

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“…Thus, this dissagregation procedure, necessary in trying to predict the 'spot' stream observations, introduces uncertainty in the timing of the peak rainfall chloride concentration/chloride mass input, which is lost in the 'bulked' data. For example much of the highconcentration rainfall can occur in the earlier part of storm events (Durana et al, 1992;Peters and Ratcliffe, 1998).…”

Section: Observed Data and Model Inputsmentioning

confidence: 99%

Modelling the chloride signal at Plynlimon, Wales, using a modified dynamic TOPMODEL incorporating conservative chemical mixing (with uncertainty)

Page

Beven

Freer

et al. 2006

Hydrological Processes

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Abstract:The application of a modified version of dynamic TOPMODEL for two subcatchments at Plynlimon, Wales is described. Conservative chemical mixing within mobile and immobile stores has been added to the hydrological model in an attempt to simulate observed stream chloride concentrations. The model was not fully able to simulate the observed behaviour, in particular the short-to medium-term dynamics. One of the primary problems highlighted by the study was the representation of dry deposition and cloud-droplet-deposited chloride, which formed a significant part of the long-term chloride mass budget. Equifinality of parameter sets inhibited the ability to determine the effective catchment mixing volumes and coefficients or the most likely partition between occult mass inputs and chloride mass inputs determined by catchment immobile-store antecedent conditions. Some success was achieved, in as much as some aspects of the dynamic behaviour of the signal were satisfactorily simulated, although spectral analysis showed that the model could not fully reproduce the 1/f power spectra of observed stream chloride concentrations with its implications of a wide distribution of residence times for water in the catchment.

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Experimental study of the scavenging process by means of a sequential precipitation collector, preliminary results

Cited by 29 publications

References 11 publications

Chemical Analysis of Wet Deposition Sequential Samples at Istanbul, Turkey

Chemical Analysis of Wet Deposition Sequential Samples at Istanbul, Turkey

FLUCTUATION OF ION COMPONENTS, TRACE METALS, AND Pb/Zn RATIO IN PRECIPITATION AT TSU CITY

Modelling the chloride signal at Plynlimon, Wales, using a modified dynamic TOPMODEL incorporating conservative chemical mixing (with uncertainty)

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