Major and trace (including arsenic) groundwater chemistry in central and southern Myanmar

Pincetti-Zúniga, Gianfranco P.; Richards, Laura A.; Tun, Yin Min; Aung, Hla Phone; Swar, Aung Kyaw; Reh, U. Phyar; Khaing, Thet; Hlaing, Moe Moe; Myint, Tin Aung; Nwe, Myat Lay; Polya, David A.

doi:10.1016/j.apgeochem.2020.104535

Cited by 29 publications

(7 citation statements)

References 32 publications

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“…Therefore, a cheap and easy method such as colorimetric detection in the solution phase can be a good alternative, which seems to be the most popular method among users due to time and cost savings. 15 To increase the sensitivity, speed, accuracy, efficiency, and cost-effectiveness of colorimetric sensors, various types of advanced nanoparticles (NPs) have been utilized in this matter. [16][17][18][19][20][21][22][23] Nanostructures have attracted much attention in the eld of metal ion analysis due to their unique optical traits.…”

Section: Introductionmentioning

confidence: 99%

Colorimetric and naked-eye detection of arsenic(iii) using a paper-based microfluidic device decorated with silver nanoparticles

et al. 2022

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Section: Introductionmentioning

confidence: 99%

Colorimetric and naked-eye detection of arsenic(iii) using a paper-based microfluidic device decorated with silver nanoparticles

et al. 2022

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“…Over-dependence on the groundwater resources and human interventions in the catchments has often led to large-scale decline in the quantity and quality of the groundwater resources even in mountainous catchments (Guo and Wang, 2005;Peisert and Sternfeld, 2005;Vaux, 2007;Sadoff and Muller, 2009;Padmalal et al,2011;Vaux, 2011;Hallouche et al, 2017;Kaushal et al,2017). Social and economic activities of the catchments are mostly dependent on the availability and quality of groundwater for various purposes (Hosseinifard and Aminiyan, 2015;Elgallal et al, 2016;Chandran et al, 2017;Wu et al, 2017;Jampani et al, 2018 andPincetti-Zúniga et al,2020). Among the water quality related problems, scaling and solute overloading are one of the major concerns in mountainous catchments with complex geo-environmental settings.…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal variability in groundwater chemistry of a mountainous catchment with complex geologic and climate gradients in south west India

et al. 2021

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Mountainous catchments are one of the world's important water sources that sustains a major portion of global population and a rich biodiversity. The groundwater quantity and quality of mountainous watersheds are depended generally on the geologic characteristics and climate gradients. Although many groundwater studies have been carried out in the midlands and lowlands of many river basins, not enough focus has been paid to the mountainous catchments of tropics. Here we report a case study on groundwater quality and controlling factors of a mountainous catchments of the Western Ghats mountain ranges of peninsular India -the Bhavani river basin, which is identi ed as a testbed for longterm monitoring of the Critical Zone process. A total of 88 water samples were collected seasonally for assessing various physico-chemical parameters, solute contents and scaling properties. The results of the study revealed that the hydrochemistry of groundwater is in uenced by both silicate and carbonate weathering. Mineral stability indices computed for the groundwater reveal that about 52 % of the samples are supersaturated with carbonate minerals and often exhibit scaling due to solute overloading. Among the contributing factors that determine water quality of groundwaters, chemical weathering and anthropogenic activities play a signi cant role.

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“…In the groundwater from below 20 m depth in the Ayeyarwady Delta area, elevated As concentrations (up to ca. 0.6 mg/L), higher than the WHO (World Health Organization) standard for drinking water (0.01 mg/L) [4], were reported [5,6].…”

Section: Introductionmentioning

confidence: 97%

Arsenic and heavy metal contents in white rice samples from rainfed paddy fields in Yangon division, Myanmar—Natural background levels?

Soe

Mu²,

Toyoda

2023

PLoS ONE

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The presence of potentially toxic metal(loid)s (As, Pb, Cd, Cr, Mn, Fe, Zn, Cu, Ni, Mo and Co) in 120 white (polished) rice grains (Oryza sativa; 2017 or earlier crop) purchased from farmers in the five most agriculturally active townships near Yangon in the eastern edge on Ayeyarwady Delta was determined by triple quadrupole inductively coupled plasma mass spectrometry (ICP-QQQ). Their total-As and Ni concentrations (0.16 mg/kg, 0.39 mg/kg) were around the worldwide average literature values from a heavy metal non-contaminated area of intermediate to acidic (non-mafic) composition. Their Pb, Cd, and Cr mean concentrations (0.010, 0.0056, and 0.056 mg/kg, respectively) were lower than the maximum allowable levels by over one magnitude, reaching the concentration ranges comparable to the lowest level in the literature values. This study’s natural background levels were explained by a negligible influence of human, mining and industrial activities in this area, and probably genotype effect, which remains to be examined by the associated paddy soil analysis. Health risks associated with rice consumption (ca. 0.5 kg/day) by the inhabitants were estimated, assuming that inorganic arsenic was 30% of the total. Arsenic was the main contributor (30%) to the total value of the non-cancer risk (HI) of each element, which was 4.5 times the reference value (< 1), followed by Mn, Zn, Cu, Mo, Co and Ni (15–7%) and Pb, Cd, Cr and Fe (below 4%). The total cancer risk (TCR) for each element was around 17 times higher than the upper limit of cancer risk for an environmental carcinogen (< 0.0001): Nickel accounts for two-thirds of the contribution (66%), followed by Cd (16%) and As (13%). This study suggests that consumers of Yangon rice from paddy fields without groundwater irrigation may need to be concerned about the potential risk of Ni intake besides arsenic.

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Major and trace (including arsenic) groundwater chemistry in central and southern Myanmar

Cited by 29 publications

References 32 publications

Colorimetric and naked-eye detection of arsenic(iii) using a paper-based microfluidic device decorated with silver nanoparticles

Colorimetric and naked-eye detection of arsenic(iii) using a paper-based microfluidic device decorated with silver nanoparticles

Spatiotemporal variability in groundwater chemistry of a mountainous catchment with complex geologic and climate gradients in south west India

Arsenic and heavy metal contents in white rice samples from rainfed paddy fields in Yangon division, Myanmar—Natural background levels?

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