Pollution arsenic

Maeda, S., S. Nakashima, T. Takeshita, and S. Higashi. 1985. Bioaccumulation of arsenic by freshwater algae and the application to the removal of inorganic arsenic from an aqueous phase, n. By Chlorella vulgaris isolated from arsenic-polluted environment. Separation Sci. Technol. 20 153-161. 

Mcarthur, J.M., Ravenscroft, P., Banerjee, D.M., Milsom, J. Hudson-Edwards, K.A., Sengupta, S., Bristow, C., Sarkar, A., Tonkin, S., Purohit, R. 2008. How palaeosols influence groundwater flow and arsenic pollution a model from the Bengal Basin and its worldwide implication. Water Resources Research, 44, W11411. 

Severe local arsenic pollution can occur adjacent to industrial enterprises producing the various arsenicals used in timber preservation and as agricultural pesticides. Concern expressed by environmental groups has led to a reduction in the use of arsenicals in agriculture over the last decade, and this trend is likely to continue. Waste disposal is the main problem in industrial arsenic production and this problem has been responsible for closing several plants in Western Europe. 

The arsenic chemistry of the Krka estuary, Croatia, is very pristine that is, essentially unaffected by arsenic pollution from humans. Total dissolved arsenic concentrations in the estuary waters vary from 0.13 to 1.8 pgL-1 (Table 3.7 (Smedley and Kinniburgh, 2002), 525). The range of concentrations can be readily explained by low-arsenic (0.13 pg E1) river water simply diluting 1.8 pgL-1-arsenic seawater in various proportions (Smedley and Kinniburgh, 2002), (Seyler and Martin, 1991), 525. In this estuary, arsenic (in particular As(V)) behaves conservatively that is, the element is relatively unreactive in at least the short... 

Cappuyns, V., Van Herreweghe, S., Swennen, R. et al. (2002) Arsenic pollution at the industrial site of Reppel-Bocholt (north Belgium). Science of the Total Environment, 295(1-3), 217-40. 

Diamond, M.L. (1995) Application of a mass balance model to assess in-place arsenic pollution. Environmental Science... 

Mirlean, N., Andrus, V.E., Baisch, P. et al. (2003) Arsenic pollution in Patos Lagoon estuarine sediments, Brazil. Marine Pollution Bulletin, 46(11), 1480-84. 

Berg, M Giger, W Tran, H.C. (2006) Extent and severity of arsenic pollution in Vietnam and Cambodia, in Managing Arsenic in the Environment From Soil to Human Health (eds R. Naidu, E. Smith, G. Owens et al.), CSIRO Publishing, Collingwood. 

Tong, N.T. (2002) Arsenic Pollution in Groundwater in the Red RiverDelta, Geological Survey of Vietnam, Northern Hydrogeological-Engineering Geological Division. 

Masuda, H., Ibuki, Y. and Tonokai, K. (1999) Mechanism of natural arsenic pollution of shallow groundwater in the northern part of Osaka Prefecture, Japan. Journal of Groundwater Hydrology, 41(3), 133-46. 

Arsenic pollution can be originated in anthropic activities (mining, use of biocides, wood preservers). However, most pollution is natural, coming from mineral dissolution in surface or groundwaters (Bundschuh et al., 2000, 2004 Litter, 2002). Predominant As forms in natural ground and surfacewaters (neutral pH) are arsenate (As(V), as H2AsO and HAsO ) and arsenite (As(III), as neutral H3ASO3). The mobility of arsenical forms in waters is very dependent on pH, Eh conditions, and presence of different chemical species (Smedley et al., 2002). Consequently, removal methods... 

Arsenic pollution of soils at old industrial sites. Acta Agric. Scand. , 28, 97-100 (1978). 

Garelick, Hemda, Huw Jones, Agnieszka Dybowska, and Eugenia Valsami Jones. Arsenic Pollution Sources. Reviews of Environmental Contamination and Toxicology 197 (2008) 17 60. 

DCH, 1997, Arsenic pollution in groundwater of Bangladesh Dhaka, Dhaka Community Hospital Trust. 

PHED, 1991, Arsenic pollution in groundwater in West Bengal. Final Report Public Health Engineering Department, Pubhc Health Department, Government of West Bengal. 

Tareq SM, SafiuUah S, Anawar HM, Rahman MM, Ishizuka T. Arsenic pollution in groundwater A self-organizing complex geochemical process in the deltaic sedimentary environment, Bangladesh. Sd Total Environ 2003 313 213-26. 

MacMillan Smoke Wars, pp. 243—245 Quivik, Smoke and Tailings, pp. 434— 438. The Anaconda smelter produced 14,000 tons of arsenic in 1933 (it is unclear whether this is expressed as As or as As203) T. LeCain, The Limits of Eco-efficiency Arsenic Pollution and the Cottrell Electrical Precipitator in the U.S. Copper Smelting Industry, Environmental History, vol. 5, pp. 336—351 (2000). Arsenic usage for pesticides in the United States in 1934 can be calculated from P. A. Neal et al., A Study of the Effect of Lead Arsenate Exposure on Orchardists and Consumers of Sprayed Fruit, Public Health Service Bulletin 267, 1941, p. 12, as approximately 21,000 tons (as As). In this calculation, the average arsenic content of lead arsenate is assumed to be 20% and the annual consumption of Paris green is assumed to be 4.5 million pounds. 

Tab. 6.3 Worldwide arsenic pollution in groundwater and population at risk, listed in order of discovery.

The foregoing shows that arsenite in aerobic environments can undergo bacterial oxidation to arsenate. Since, as shown in the chapter on arsenate reduction, some anaerobic bacteria have the ability to reduce As(V) to different lower oxidation states, bacterial arsenite oxidation must represent part of a microbial arsenic cycle. Microbial activity can also mobilize arsenic in some minerals as arsenite and/ or arsenate. These microbial activities have to be considered in any assessment of environmental arsenic pollution. 

O 54. The "Chemistry in Focus" segment Putting the Brakes on Arsenic discusses the dangers of arsenic and a possible help against arsenic pollution. Is arsenic a metal, a nonmetal, or a metalloid What other elements are in the same group on the periodic table as arsenic ... 

Strategies for the Engineered Phytoremediation of Mercury and Arsenic Pollution... 

Precautions in many countries have diminished arsenic pollution. But there are problems by burning of coal, timber, and fossil fuels and the contamination of soils and water released by refuse deposits. Plants grown on As-contaminated soils show growth reduction [20]. The restoration of these soils may become a problem of the future [21],... 

Air Water Allergens, pollution Arsenic, pollution Itching, sneezing, drowsiness, nasal stuffiness, watery eyes, etc. Nausea, vomiting, diarrhea, abdominal pain, decreased production of red and white blood cells... 

Ravensorofl, P. (2007) Predicting the global extent of arsenic pollution of groundwater and its potential impact on human health. Report prepared for UNICEF, New York, NY. 

Berg, M., Caroline, St.R, Pham, T.K.T., Mickey, H.V, Sampson, L., Leng, M., Samreth, S. Fredericks, D. (2007) Magnitude of arsenic pollution in the Mekong and Red River deltas - Cambodia and Vietnam. Science of the Total Environment, 372,413 25. 

Ravenscroft, Peter, Hugh Brammer, and Keith Richards, Arsenic Pollution A Global Synthesis, Blackwell, Malden, MA, 2009. 

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