Groundwater Contamination Due to Nitrate in a Coastal Aquifer: Conjecture and Identification Along the West Coast from Katana to Negombo, Sri Lanka

Ratha, P.

doi:10.17577/ijertv8is060573

Cited by 3 publications

(7 citation statements)

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“…About 9 and 10 boreholes equivalent to 12% and 13.3% during wet and dry seasons, respectively had NO2concentrations greater than WHO recommended values. Such values are likely to expose bottle-fed infants to methemoglobinemia (Khaniki et al, 2008;Ratha et al, 2019).…”

Section: Nutrient Variations In the Boreholesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…On the other hand, degradation of groundwater quality in unplanned settlements is influenced by the location of point and diffuses pollutants sources (Ratha et al, 2019). Previous studies (Cruz-Fuentes et al, 2014;Phiri, 2016 andRatha et al, 2019) have pointed out the most common sources of groundwater pollution include domestic sewage, latrines, municipal solid wastes, agricultural manure and industrial wastes. Absences of sewerage systems and poor waste management practices in unplanned settlements lead to the dependence on onsite sanitation systems particularly septic systems and pit latrines which are located in the proximity of groundwater sources, which in turn threaten the quality of dependable water sources (Musa et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

“…It is also formed naturally in the human body (Gao et al, 2012;Phiri, 2016 andElisante et al, 2017). High concentrations of nitrates exceeding 50 mg/L in the drinking water cause health risks including conversion of hemoglobin to methemoglobin which reduces oxygen levels in the human blood (WHO, 2008 andRatha et al, 2019). Long term effects of nitrogen in drinking water include enlargement of the thyroid gland, birth defects, hypertension and cancer 88 | P a g e (especially for older people), stomach cancer and esophageal, thyroid and diabetes (Ratha et al,2019).…”

Section: Introductionmentioning

confidence: 99%

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Occurrence of Elevated Nitrogenous and Phosphorus in Groundwater Sources Used in Unplanned Settlements, Dar Es Salaam - Tanzania

2022

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Groundwater in unplanned settlements is stressed by multiple pollution sources threatening health of consumers. Elevated nitrogen and phosphorus affect the quality of groundwater as they leach through the soil to groundwater. This study aimed at establishing variations of nitrogenous and phosphorus compounds in 75 boreholes used in 8 unplanned settlements in Dar es Salaam, Tanzania. Laboratory analysis using Spectrophotometer DR/4000 was conducted at Ardhi University. Principal Component Analysis was conducted by using Paleontological Statistics (PAST) software, version 3.08 and statistical significance set at p < 0.05. Results indicated that about 84% and 73.3% of sampled boreholes during wet and dry seasons, respectively had nitrate nitrogen greater than WHO recommendations for drinking water quality standards. Concentration of NO2-N showed that 12% and 14.7% of sampled boreholes during wet and dry seasons, respectively were greater than 0.9 mg/L TZS (574:2016) recommended guidelines. Phosphate concentration was greater than 2.2 mg/L TZS (574:2016) recommended guidelines in 49.3% and 12% of sampled boreholes during both wet and dry seasons, respectively. These results indicated that consuming such polluted water may be unsafe to infants and older people and therefore alternative drinking water source is recommended.

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Section: Nutrient Variations In the Boreholesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Occurrence of Elevated Nitrogenous and Phosphorus in Groundwater Sources Used in Unplanned Settlements, Dar Es Salaam - Tanzania

2022

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“…Konsentrasi nitrit pada lokasi penelitian memiliki nilai yang lebih tinggi dibandingkan penelitian Choeronawati et al (2019) yaitu berkisar antara 0,01-0,3 ppm. Ratha et al (2019) menyatakan bahwa tingginya kandungan nitrat di dalam air tanah kawasan pesisir dimungkinkan berasal dari sistem sanitasi dan limbah rumah tangga penduduk/pemukiman yang ada dan dengan tambahan kegiatan pertanian.Keberadaan konsentrasi nitrit yang tinggi pada organisme air akan mengakibatkan terhambatnya pengikatan oksigen pada darah yang berakibat pada kematian organisme air, dan mengakibatkan toleransi organisme air terhadap oksigen rendah menurun (Wyk & Scarpa, 1999). Akumulasi nitrit dapat menurunkan kualitas air, meningkatkan konsumsi oksigen dan ekskresi amonia, mengurangi pertumbuhan dan bahkan kematian dengan tingkat toksisitas nitrit akan bergantung dengan tingkat salinitas, dimana akan semakin toksik pada tingkat salinitas yang rendah (Liu & Chen, 2004;Valencia-Castañeda et al, 2018).…”

Section: Pendahuluanunclassified

Analisis Kesesuaian Air Sumber untuk Budidaya Udang di Kecamatan Purwodadi, Kabupaten Purworejo

Setyawan

Purnama

Sudarmadji

2021

JFS

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Kecamatan Purwodadi merupakan kawasan yang diarahkan sebagai wilayah pertambakan udang karena ketersediaan areal pesisir yang luas dan sumber air yang memadai. Kesesuaian lokasi merupakan faktor penting pada budidaya udang, karena dapat mempengaruhi kesuksesan dan keberlanjutan suatu tambak. Pengukuran kualitas parameter perairan terhadap komoditas budidaya perlu dilakukan untuk mengetahui tingkat kesesuaiannya terhadap komoditas yang dibudidayakan. Penelitian bertujuan untuk mengetahui kesesuaian air tanah di kawasan pertambakan Kecamatan Purwodadi, Kabupaten Purworejo. Penelitian dilakukan dengan membandingkan nilai kualitas air sumber dengan baku mutu yang ada dengan menggunakan 10 sumur sumber tambak udang. Hasil pengamatan terhadap kualitas air tanah pada sumur sumber tambak di kawasan pertambakan Kecamatan Purwodadi menunjukan dari 10 parameter yang digunakan, terdapat 4 parameter yang tidak sesuai dengan baku mutu air sumber untuk budidaya udang vanname yaitu oksigen terlarut (6 sumur sumber), chemical oxygen demand (COD) (8 sumur sumber), nitrit (5 sumur sumber), dan amonia (3 sumur sumber). Berdasarkan tingkat kualitas air sumur sumber, mayoritas sumur sumber tidak memenuhi kriteria dengan hanya sumur 5 yang memenuhi baku mutu, dan sumur 3 serta 4 yang paling tidak memenuhi kriteria (4 parameter tidak memenuhi baku mutu). Pemilihan lokasi sumur sumber dan pengecekan kualitas sumur sumber diperlukan untuk mendapatkan air sumber yang memenuhi ambang batas serta penerapan teknologi dalam budidaya perlu dilakukan untuk menjaga kualitas air budidaya.

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Hydro-geochemical Study of the Coastal Aquifer in Tripoli (Lebanon)

Halwani

El-Hajj²,

Halwani³

2022

RJEES

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Groundwater geochemistry refers to the general chemical properties of water, particularly groundwater. Precipitation, volatilization, oxidation/reduction, sorption/partition, and complexation are processes involved in the distribution and fate of organic molecules in water. Determining hydrogeochemical facies is a great help for determining relationships and similarities among the chemistry of waters in an aquifer. This study focused on the coastal aquifer of Tripoli (Lebanon) with Mio-Quaternary age. It is considered as a confined aquifer and an important hydraulic reserve for domestic water use in the region. Recently, it underwent an urban development that leads to an increase in water demand causing a decrease in the piezometric level and a high-risk of deterioration to water quality through seawater intrusion and anthropic pollution. To understand the origin of mineralization and the mechanism of water hydro-chemistry variation and to provide a vision to underground water recharge, this study aims to analyze the hydrodynamic, piezometric, and geochemical characteristics of the coastal aquifer. The fluctuation of physicochemical parameters for cool and warm seasons has been studied and monitored for 16 coastal wells during April, May, and June 2020. Results were interpreted by using a statistical analysis called Principal Components Analysis (PCA). Cartographic of groundwater levels and concentrations for nitrate, chloride, sulphate ions, the ratio sulphate/chloride were determined by using SUFFER8 software. It can be noticed that the Mio-Quaternary formation at Tripoli consists of thick sedimentary sandstones and conglomerates with argillaceous roots, which provide significantly high permeability characteristics. It is mainly recharged from precipitations through karstic formations. Chemical analysis shows that bicarbonate ions (HCO3 -), characterized by dissolution of carbonate rocks from geological upstream formations of Tripoli, means that the aquifer is subjected to intensive recharge of fresh water and snow melting making a hydrostatic equilibrium facing marine intrusion [1]. High contents of chloride and Sodium are due to anthropic contamination or seawater intrusion. However, Magnesium ion concentration assures this intrusion. Meanwhile, nitrates, sulfates and phosphorus high concentrations are related to wastewater leakage or agricultural activities [2].

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Groundwater Contamination Due to Nitrate in a Coastal Aquifer: Conjecture and Identification Along the West Coast from Katana to Negombo, Sri Lanka

Cited by 3 publications

References 6 publications

Occurrence of Elevated Nitrogenous and Phosphorus in Groundwater Sources Used in Unplanned Settlements, Dar Es Salaam - Tanzania

Occurrence of Elevated Nitrogenous and Phosphorus in Groundwater Sources Used in Unplanned Settlements, Dar Es Salaam - Tanzania

Analisis Kesesuaian Air Sumber untuk Budidaya Udang di Kecamatan Purwodadi, Kabupaten Purworejo

Hydro-geochemical Study of the Coastal Aquifer in Tripoli (Lebanon)

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