Arsenic accumulation in maize crop (Zea mays): A review

Epidemiology of chronic disease related to arsenic in Argentina: A systematic review

“…The anthropogenic activities in mining areas that enhance the mobilization of As and other copollutants makes the environmental problem more dramatic . Additionally, the use of arseniccontaminated groundwater for irrigation purposes in crop fields elevates the arsenic contamination (Rosas-Castor et al, 2014). Both pathways were observed in a recent review from Colombia that revealed that As is present in soil sediments, water and in the food chain, exceeding the national and international limits, particularly in mining and agricultural areas (Alonso et al, 2014).…”

Soil Pollution Due to Irrigation with Arsenic-Contaminated Groundwater: Current State of Science

“…Based on (1) the threshold rice-grain As concentration of 200 μg/kg for genotoxic effects associated with rice consumption [44], (2) typical rice consumption rates of 0.47 kg/person/ day in Bangladesh [58], and (3) typical maize consumption rates of 0.33 kg/person/day in Mexico [41], a threshold As maize concentration of 286 μg/kg can be estimated for areas where maize is a staple crop. Cereal crops may have As concentrations that approach this threshold level; however, data from previous research suggest that in most cases, such concentrations are not common (Table 1, Fig.…”

“…High As concentrations have been recorded in groundwater throughout the southwest USA in areas such as the southern Carson Desert in Nevada, San Joaquin Valley in California, and the Basin and Range Province in Arizona [63]. Additionally, the Zimapan Valley, Baja California, Comarca Lagunera, and San Luis Potosi are a few agriculturally productive areas of Mexico where groundwater also may exhibit high concentrations of As [41,63]. Although some irrigation with surface water is common in these regions, areas where groundwater irrigation is extensive, such as the High Plains and California Central Valley in the USA [64] and Sonora State and Baja California Sur in Mexico [65], are susceptible to soil As accumulation.…”

“…Silica impacts As(III) uptake by plants due to their similar modes of sorption to plant roots and transport pathways [46]. Finally, Fe(III) plaques have been found to form in oxic cropping systems, such as maize, and have a similar impact on accumulation and plant uptake as they do within suboxic rice cultivation systems [41].…”

Untitled

“…O comportamento do arsenato no solo é semelhante ao do fosfato e vanadato (Mcbride, 1994;Rosas-Castor et al, 2014). O arsenato sofre adsorção em óxidos de Fe e Al, aluminossilicatos não cristalinos e, em menor extensão, em argilossilicatos.…”