Pollution evaluation and health risk assessment of heavy metals in the surface water of a remote island Nijhum Dweep, northern Bay of Bengal

Rahman, Mahfuzur; Rim, Sabrina Akhter; Sah, Subrota Kumar; Saima, Jerin; Hossain, Sabbir; Tanni, Tamisra Nath; Bakar, Marina Abu; Siddique, Mohammad Abdul Momin

doi:10.1016/j.enmm.2022.100706

Cited by 11 publications

(7 citation statements)

References 57 publications

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“…The study analyzed ten heavy metals in Thimphu's drinking water sources and found all concentrations to be below MPL set by the BDWQS and WHO, indicating compliance with national and international drinking water quality standards 5,7 . Similar studies conducted in Nepal, Bangladesh and Pakistan all exceeded the MPL [18][19][20] . The contamination with heavy metals may be attributed to poor waste management, open sludge discharge, lack of municipality measures, electronic waste, pesticide application and mining activities 21,22 .…”

Section: Discussionsupporting

confidence: 74%

“…The HPI value of 100 is considered as a critical pollution concentration with respect to heavy metals. HPI results were classified as low (<15), medium (15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(30), or high (>30) pollution. As shown in Table 4, all water sources had HPI value of <15, the sources are classified as low pollution by heavy metals.…”

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confidence: 99%

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Determination of Water Quality Indices and Assessment of Heavy Metal Pollution of Drinking Water Sources in Thimphu

Chophel

2023

BHJ

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Introduction: The well-being of public health is associated with the availability of safe and clean drinking water. Heavy metals, known for their toxicity and potential health risks, are a particular focus of water quality assessments. This study investigates the heavy metal concentrations in five primary drinking water sources of Thimphu city: Motithang, Jungshina, Taba, Dechencholing and Chamgang. Methods: The ten heavy metals, known for their toxicity (Aluminum (Al), Boron (B), Barium (Ba), Cadmium (Cd), Chromium (Cr), Copper (Cu), Manganese (Mn), Nickel (Ni), Lead (Pb), and Zinc (Zn)), were assessed using inductively coupled plasma optical emission spectroscopy (ICP-OES) for precise analysis. The study employed the Heavy Metal Pollution Index (HPI) and the Heavy Metal Evaluation Index (HEI) to evaluate water quality. Results: The test results revealed low heavy metals concentration in the water sources. The HPI and HEI values were also calculated to be low (<15 and <1.24 respectively). Conclusions: The study provides valuable insights into Thimphu’s drinking water quality, indicating a positive status with low heavy metal concentrations

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Section: Discussionsupporting

confidence: 74%

mentioning

confidence: 99%

Determination of Water Quality Indices and Assessment of Heavy Metal Pollution of Drinking Water Sources in Thimphu

Chophel

2023

BHJ

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“…Short-term exposure to mercury Hg and its compounds can affect the respiratory tract, nervous system, kidneys and gastrointestinal tract (Li et al, 2018 ). Depending on the toxicity and concentration of Hg, the effects on human health may include cancer, DNA mutations, alterations in cardiac function, damage to the central nervous system and damage to blood cells and organs such as the liver, kidneys and lungs, among others (Briffa et al, 2020 ; Rahman et al, 2022 ). Among the factors that determine the toxicity of a pollutant in organisms, the following stand out: exposure route, speed of entry and excretion, distribution in the tissues and concentration in them (Briffa et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Assessment of Hg pollution in stream waters and human health risk in areas impacted by mining activities in the Ecuadorian Amazon

Mestanza-Ramón,

Jiménez-Oyola,

Montoya

et al. 2023

Environ Geochem Health

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Illegal gold mining activities have contributed to the release and mobilization of Hg and environmental degradation in many parts of the world. This study aims to determine the concentration of Hg in five provinces of the Amazon Region of Ecuador, in addition to assessing the risk to human health of exposed populations, applying deterministic and probabilistic methods. For this purpose, 147 water samples were collected in rivers and streams crossing and/or located near mining areas. As a result, 100% of the samples analyzed exceeded the maximum permissible limit (MPL) according to the water quality criteria for the preservation of aquatic life of the Ecuadorian regulations, while 7% of the samples exceeded the MPL for drinking water. On the other hand, considering the European Environmental Quality Standard (EQS) for surface water bodies, in our study, 100% of the samples exceed the maximum permissible limit (0.07 µg/L), and with respect to the Canadian water quality guidelines, 35% of the samples exceed the permissible limit (0.001 mg/l) for drinking water, and 100% of the samples exceed the limit for life in water bodies (0.0001 mg/l). The risk assessment revealed that the probability of developing adverse health effects from exposure to Hg is below the recommended limits according to the probabilistic assessment; this is in relation to the criterion of residential and recreational use of water resources. However, it was identified that the child population doubles the acceptable systemic risk level according to the results of the deterministic assessment in the residential scenario. This information can be used by decision-makers to implement strategies to reduce Hg contamination and exposure of the population in Ecuadorian Amazonian rivers.

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“…En minería, el hombre a través de los procesos productivos genera alteraciones al medio ambiente, en particular, parte del resultado del proceso metalúrgico no se excusa de esto, en vista de que los residuos producidos, en los efluentes, aún en el transitar tecnológico del presente siglo XXI, no se llega a controlar eficientemente emisiones con metales pesados tóxicos que continúan desembocando en corrientes acuíferas, afectando y disminuyendo cada vez más los escasos recursos naturales, importantes para la sobrevivencia humana y cualquier variedad de vida (Rahman et al, 2022).…”

Section: Razones De La Investigaciónunclassified

“…El cadmio (Cd) es un metal que se biomagnifica y representa una grave amenaza para los humanos y otros organismos donde la exposición al Cd causa insuficiencia renal (Maia-Elkhoury et al, 2021). Rahman et al (2022), encontró que la contaminación por metales pesados de las aguas superficiales en la Bahía de Bengala, clasifican en orden descendente de Pb (0,3 mg/L) > Cd (0,11 mg/L), analizado mediante espectroscopía de absorción atómica.…”

Section: Introductionunclassified

Eficiencia de bioadsorción de vegetales silvestres sometidos a metales y metaloides contenidos en agua superficial

Acharte,

Enríquez,

Quispealaya

et al. 2023

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La contaminación de aguas superficiales procedentes de cabeceras de cuenca de zonas mineras con metales y metaloides, es un problema ambiental que debe ser abordado, a través de la investigación científica, para minimizar sus impactos y sus efectos. El objetivo de este estudio fue determinar y evaluar la eficiencia de bioadsorción de vegetales silvestres en la eliminación de metales y metaloides presentes en agua superficial proveniente de cabeceras de cuencas del centro poblado de San Pedro de Mimosa Ccochaccasa en la provincia de Angaraes, Huancavelica - Perú. Esto implica utilizar plantas silvestres como agentes de absorción para reducir la concentración de contaminantes en el agua, en este caso, metales y metaloides provenientes de la actividad minera. El estudio se llevó a cabo de manera experimental, prospectiva, transversal y analítica, lo que corresponde al nivel de investigación aplicativa. El muestreo se realizó de manera intencional a criterio de los investigadores. La eficiencia de adsorción para la planta chilca fue 16.28% de As, 28.60% de Cd y 27.31% de Pb, para diente de león 28.70% de As, 79.33% de Cd y 28.75% de Pb y a cascara de tuna 48.39% en As, 46.38% de Cd y 45.23% de Pb. El resultado es significativo, diente de león con 45.59% supera a cascara de tuna en 39.44% y chilca en 33.44%. Se llevó a cabo un análisis estadístico con método Tukey y se determinó que no existe una diferencia significativa en las eficiencias de bioadsorción entre las plantas. Los resultados podrían ser aprovechados para diseñar sistemas de tratamiento de aguas basados en la bioadsorción utilizando estas plantas, ofreciendo una alternativa sostenible y económica a los métodos convencionales de remoción de contaminantes.

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Pollution evaluation and health risk assessment of heavy metals in the surface water of a remote island Nijhum Dweep, northern Bay of Bengal

Cited by 11 publications

References 57 publications

Determination of Water Quality Indices and Assessment of Heavy Metal Pollution of Drinking Water Sources in Thimphu

Determination of Water Quality Indices and Assessment of Heavy Metal Pollution of Drinking Water Sources in Thimphu

Assessment of Hg pollution in stream waters and human health risk in areas impacted by mining activities in the Ecuadorian Amazon

Eficiencia de bioadsorción de vegetales silvestres sometidos a metales y metaloides contenidos en agua superficial

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