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Most households of rural India and Bangladesh switched from surface water for their drinking water, causing high incidence of diarrheal disease in the 1980s, to groundwater extracted by hand pumps in the 1980s. However, no widespread replication of ECAR plants in the area has occurred since the handover of the ECAR technology and plant to Livpure in 2016. With ongoing studies examining the introduction of next-generation ECAR technologies in rural California and the Philippines, the engineering science behind ECAR continues to be an important field of study.
Source link: https://doi.org/10.1007/978-3-030-86065-3_14
Long-term exposure to arsenic can result in various degrees of liver disease. Using an integrated metabolic approach with an LC-Orbitrap Q Exact (U2122 HF-X mass spectrometer, potential biomarkers and metabolic pathways in Wistar rats treated with arsenic for 24 weeks were investigated in the present study.
Source link: https://doi.org/10.1007/s12011-021-03026-0
Therefore, populations that consume mainly rice may have micronutrient deficiencies, which is linked to various diseases. On the other hand, rice that has been irrigated by floods has a high tendency to accumulate arsenic in the grain. To resolve micronutrient deficiencies such as Fe and Zn and To prevent As from entering the food chain, various strategies have been used. One of the most cost-effective options is to grow genetically biofortified rice plants in Fe and Zn, with low As accumulation, because it does not cost farmers additional money and provides customers with benefits as well. This report sought to summarize the key attempts, advancements, and challenges in rice grains, considering the importance of genetic modification to minimize the effects of micronutrient deficiencies such as Fe and Zn and contamination with As.
Source link: https://doi.org/10.1007/s12011-021-03018-0
Childhood atopic dermatitis is a chronic and recurrent health condition that involves many causes, including immunological and environmental. As part of the POSGRAD clinical trial in Morelos, Mexico, we investigated the effects of docosahexaenoic acid supplementation on prenatal arsenic exposure on preschool children's risk of atopic dermatitis. To determine the effect of prenatal arsenic exposure on AD risk, we created a generalized estimation equation model for longitudinal data, including potential confounders, and looking at pregnancy effects by omega-3 fatty acid supplementation. Prenatal arsenic exposure and AD was found to be marginally linked, but DHA supplementation during pregnancy increased the risk of AD. The results of this research confirm that arsenic use during pregnancy raises the risk of atopic dermatitis early in life.
Source link: https://doi.org/10.1007/s12011-022-03411-3
As soluble As in rice grains, shoots and As species in rice grains, determine the effect of As concentrations on the rice crop's physiological and agronomic characteristics, determine As species's physiochemical and agronomic characteristics, and measure As percentages of As in the soil under various water regimes, with the aim of determining changes in fractions of As in the soil. Grain was significantly reduced in rice grown in 10 and 50 mg kg(u22121 As-contaminated soil with less applied irrigation, as a result of lower rainfall. In both the As-contaminated soils and other irrigation methods, aerobic irrigation has effectively reduced the amount of arsenic in rice grain relative to other irrigation techniques. This report revealed that irrigation techniques other than flood irrigation have significantly affected the As concentration within the rice grains and non-significantly impact crop yield, and that must be considered if limits are based on organic As percentage of total As concentration.
Source link: https://doi.org/10.1007/s11270-022-05856-7
The Hailar Basin is a region with less rainfall in China's Inner Mongolia Autonomous Region, where groundwater is the most important water source. For the efficient management of groundwater resources, it is vital to know the groundwater characteristics and hydrogeochemical processes. Groundwater samples were collected and analyzed in the study area to determine the concentration mechanism of F, As, and U in groundwater. The groundwater in the study area is primarily affected by the hydrogeochemical effects of evaporative crystallization, rock weathering techniques, and the dissolution of silicate rock and evaporative salt rock minerals, as shown by a Gibbs diagram and endmember diagram. Ca2+, Mg, SO_4+, SO_42+, SO_412+, SO_42212, and NO_2212 all have a huge influence on the concentration of U. C. water, with Ca 2+, Mg2+, SO_4+, SO_41212, and NO_2212 influencing the concentration of U. S. C. 2212 and NO_3u2212 having a significant effect on the concentrations.
Source link: https://doi.org/10.1007/s12665-022-10560-0
Arsenic is a non-toxic metalloid abundant in the aquatic environment, posing significant health risks. Natural bentonite clay had no affinity with arsenic. However, organosilane functionalized clay demonstrated greater affinity toward arsenic and arsenic. Natural bentonite was successfully treated with 3-mercaptopropyltrimethoxysilane and 3-aminopropyltrimethoxysilane, according to this. The functionalized materials improved the adsorption capacities of arsenic and arsenic relative to the pristine bentonite. These advanced materials had a very high solution pH, facilitating the removal of arsenic and arsenic by these advanced materials. According to 3-APTES/BN, the maximum sorption capacity of arsenic by 3-MPTS/BN and arsenic by 3-APTES/BN was measured at 11. 93 and 10. 50 mg/g, respectively. Except in EDTA and phosphate, the influence of ionic strength and several co-existing ions showed no influence on the removal's efficiency, except for EDTA and phosphate. The results also showed the selectivity and effectiveness of functionalized materials toward the targeted pollutants.
Source link: https://doi.org/10.1007/s13762-022-04506-z
The concentration of arsenic and other parameters in soilwater of 302 tube-wells in Nakashipara and Tehatta blocks of West Bengal, India, is investigated. The semi to leaky-confined aquifer of Type-2 is presumably more susceptible to producing arsenic release environments from sediment to groundwater among the three identified aquifers. This is due to the increased organic carbon content in Type-2's clay layer, which aids in bacteriogenic reductive dissolution processes. The principal component analysis of 23 variables of 302 water samples has found five physico-chemical key elements responsible for arsenic release to aqueous systems from sediments, according to the principal component analysis. They are shown to represent the various stages of reductive dissolution of arsenic in the order of cluster II u2192 cluster III, which means less reduction to higher reducing aquifer temperatures due to improved reducing aquifer conditions.
Source link: https://doi.org/10.1007/s12665-022-10571-x
Soil geochemical prospecting is a growing part of archaeological study. Using LiDAR DTM images and historical records that show mining in Radzimowice, the 201cStart G 201d deposit was examined in this study. The results were used to create a map of arsenic soil concentrations in this region. In this article, we discuss the possibility of using a geochemical map of arsenic concentrations in soils that are backed by LiDAR results for archaeological purposes.
Source link: https://doi.org/10.1007/s12520-022-01654-8
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