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"This book explains the sources of arsenic to paddy soils and the biogeochemical processes and plant physiological attributes of paddy soil-rice ecosystems that lead to high concentrations of arsenic in rice grain. It presents the global pattern of arsenic concentration and speciation in rice, discusses human exposures to inorganic arsenic from rice and the resulting health risks. It also highlights particular populations that have the highest rice consumptions, which include Southern and South East Asians, weaning babies, gluten intolerance sufferers and those consuming rice milk. The book also presents the information of arsenic concentration and speciation in other major crops and outlines approaches for lowering arsenic in rice grain and in the human diet through agronomic management."

"Arsenic contaminated sludge can be substantially found from the treatmen of arsenic contaminated ground water. Lake of proper management and reuse of this sludge can create further environmental problem as there is probability of mixing with soil and water...."

"A study at several geothermal systems in West Java,Indonesia shows that thermal waters could naturally contain up to 2.6 ppm As and 6.5 ppb Hg,and the survace hydrothermal alteration could contribute up to 50 ppm As and 800 ppb Hg...."

"Arsenic is a ubiquitious element in the environment and occurs naturally in both organic and inorganic forms. Under aerobic condition, the dominant form of arsenic in waters in arsenata, which is highly mobile and toxic...."