Chemical characteristics of wet precipitation at Peradeniya in Sri Lanka

Liyandeniya, A. B.; Deeyamulla, M.P.; Abeysundara, Sachith; Priyantha, Namal

doi:10.1007/s10661-020-08772-7

Cited by 7 publications

(8 citation statements)

References 37 publications

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“…Kandy is a city with heritage value, located at 519 m above mean sea level. The latitude and longitude coordinates of Kandy city are approximately 7.2914 and 80.6366, respectively [5,10,32]. It has a high population density of about 6000 persons per km 2 ; its daily transient population is around 100,000 people, and daily traffic flow is over 100 000 vehicles through four main entrances towards the city center [10,25].…”

Section: Study Areamentioning

confidence: 99%

“…The capital of the district is Kandy. The average daytime ambient temperature is in the range of 28 -32 °C, and the monthly rainfall is in the range of 52 -398 mm, while the daytime relative humidity is in the range of 63 -83% [5,32]. Kandy is a city with heritage value, located at 519 m above mean sea level.…”

Section: Study Areamentioning

confidence: 99%

“…The sampling site was located in an open area near the Department of Chemistry. The university livestock is located in a few km distance to the sampling area [5,32].…”

Section: University Of Peradeniya (Uop) Sitementioning

confidence: 99%

“…In the laboratory, the volume of each wet deposition sample that was taken from each of the three sites was measured separately, for the estimation of the average rainfall. Thereafter, each sample was divided into three parts: The first part was used to measure water quality parameters [pH, conductivity, salinity, and total dissolved solids (TDS)]; The second part was used to determine the hardness of rainwater using ethylenediaminetetraacetic acid (EDTA) titration method; The third part of the sample was filtered through a 0.45 µm cellulose acetate filter paper into a polyethylene bottle, and stored at 4  C until further analysis of ions [7,32,37].…”

Section: Sample Collection and Storagementioning

confidence: 99%

“…Nevertheless, very limited studies have been conducted for determining the cations and anions in the bulk deposition of the Kandy area. A study conducted in the Peradeniya area in Kandy District from 2012 to 2014 showed that major ionic species present in bulk precipitation samples were in the order of Ca 2+ > Na + > Cl − > NH 4 + >SO 4 2− > K + > NO 3 − > Mg 2+ [32]. Another study that was conducted in Kandy District from 2013 to 2014 showed that the ionic species were present in depositions in the order of NH…”

Section: Introductionmentioning

confidence: 99%

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Comparison of Ionic Concentrations (Na+, Ca2+, Mg2+, NH4+, Cl-, SO42-, NO3-) and Water Quality Parameters of Bulk Depositions Among Three Sites in Kandy Area, Sri Lanka

Dharmapriya

Rathnayake

Deeyamulla

et al. 2023

Preprint

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The chemical composition of atmospheric deposition changes over time due to a variety of physical, chemical, and biological conditions. The objectives of this study were to use statistical methods to compare the composition of cations, anions, and water quality parameters of bulk deposition. Three sampling sites of 7 km apart in Kandy District in Sri Lanka were selected for the study: The Kandy City Center (KCC) site represented an urban environment located in a valley, the University of Peradeniya (UoP) site and the Polgolla sites represented a suburban environment. Bulk depositions were collected weekly over eight months (from 03.08.2018 to 27.03. 2019). The chemical analyses of anions (Cl-, NO3-, SO42-) and cations (Na+, K+, Ca2+, Mg2+, NH4+) in bulk depositions carried out using ion chromatography indicated that the volume-weighted mean (VWM) concentrations of cationic species in KCC, UoP, and Polgolla sites followed as, Na+> Ca2+> Cl-> K+> Mg2+> NH4+> SO42-> NO3-, Ca2+> Na+> Cl-> Mg2+> NH4+> SO42-> NO3-> K+, and Na+> Cl-> Ca2+> NH4+> K+> NO3-> SO42-> Mg2+ respectively. The VWA pH in KCC, UoP, and Polgolla sites were 6.93, 6.82, and 6.85, respectively, which are nearly neutral due to the neutralization effect. The VWA conductivity values of KCC, UoP, and Polgolla sites were 64.22 µS cm-1, 49.40 µS cm-1, and 42.66 µS cm-1, respectively. Average values of other water quality parameters (salinity, total dissolved solids, and hardness) were higher in the KCC site than those in the other two sites.

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Section: Study Areamentioning

confidence: 99%

Section: Study Areamentioning

confidence: 99%

“…The sampling site was located in an open area near the Department of Chemistry. The university livestock is located in a few km distance to the sampling area [5,32].…”

Section: University Of Peradeniya (Uop) Sitementioning

confidence: 99%

Section: Sample Collection and Storagementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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