By Satinder Ahuja
Presents a workable reference, describing the state-of-knowledge on assets of arsenic infection in floor water, which impacts approximately a hundred million humans around the world. With contributions from world-renowned specialists within the box, this ebook explores advancements within the delivery kinetics, detection, dimension, seasonal biking, accumulation, geochemistry, removing, and toxicology of arsenic. contains compelling case reports describing how arsenic infection happens and the devastating results at the humans and atmosphere stricken by it.
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Extra resources for Arsenic Contamination of Groundwater: Mechanism, Analysis, and Remediation
The lower arsenic level could be attributed to the lower water requirement for wheat. 51 mg/kg DW. Most arsenic data in rice relate to total arsenic. Williams et al. (2005, 2006) have presented data on various arsenic species of Bangladeshi rice samples. According to these authors, Bangladesh rice contains more than 80% inorganic arsenic, followed by a small fraction of organic arsenic and a sizable portion that could not be accounted for. The principal species identiﬁed were As(III), DMA(V), and As(V).
6 million hectares is covered via 23,000 DTWs. 27 million hectares for other crops (FAO, 2006). , 1999). The most severely contaminated districts lie in the north-central, southeastern, and southwestern regions of the country, where up to 90% of the wells tested are contaminated (Figure 1). In general, the southern half of the country is more contaminated than the northern half. In terms of the concentration of arsenic in water, there are very wide variations. However, there is general pattern to this variation: It is wide in the northwest and southwest, whereas it is uniform in the southeast.
2003) also found that the accumulation of arsenic was greater in similar vegetables grown on soils belonging to Gangetic alluvium compared to those growing on soils of Teesta alluvium. The concentration of arsenic in plants seldom exceeds 1 μg/g (Merkert, 1992). However, the concentration of arsenic in arum, amaranthus, gourd leaf, tomato, and certain weeds exceeds the WHO food arsenic content of 2 μg/g FW. 1, the plant can be considered as excluding the element from its tissues. , arum (Colocassia antiquorum) and several leafy vegetables] have shown the reverse phenomenon, indicating their afﬁnity for arsenic accumulation.