Arsenates solubility

Han F.X., Kingery W.L., Selim H.M., Gerard P.D., Cox M.S. Arsenic solubility and distribution in poultry-waste and long-term amended soil. Sci Total Environ 2004a 320 51-61. 

Gao, S., Goldberg, S., Herbel, M.J. et al. (2006) Sorption processes affecting arsenic solubility in oxidized surface sediments from Tulare Lake bed, California. Chemical Geology, 228(1-3 Special Issue), 33-43. 

Iron(III)-arsenate compounds are stable under oxidizing conditions (Fig. 12.15). Assuming that redox conditions in the stratum become reductive, iron(III) converts to iron(II) and arsenate becomes arsenite (AsO3- or AsO ). As conditions reduce further, arsenic solubility is regulated by sulfides and pH (arsenic MCL is set at 0.05 mg L 1, arsenosulfides exhibit a solubility near 1 mg L 1). Arsenic redox reactions can be carried... 

The Si-As system has been reassessed based on the phase equilibrium data reported by Klemm and Pirscher [15], Ugay and Miroshnichenko [16], and Ugay et al. [17]. Arsenic solubility data measured by Trumbore [18], Sandhu and Reuter [19], Fair and Weber [20], Ohkawa et al. [21], Fair and Tsai [22], Miyamoto et al. [23] and the activity data given by Reuter [19], Ohkawa... 

Properties Light-blue, blue, or bluish-green powder. Variable composition. Contains approximately 33% copper and approximately 29% arsenic. Soluble in dilute acids, ammonium hydroxide insoluble in alcohol, water. 

Soil and sediment oxidation-reduction reactions play an important role in determining arsenic solubility, mobility, bioavailability, and toxicity. Under natural environmental conditions, arsenate... 

LE Devel, AR Swoboda. Arsenic solubility in a reduced environment. Soil Sci Soc Am Proc 36 276-278, 1972. 

This cascading behavior is partially explained by the increase in pH, which results in increased arsenic solubility. The first data points (days 130, 132 and 140) did not yet require sulfide addition as the Eh was still very low (compare production Eh=-478mV) and decreased to 0 mV... 

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