Soluble arsenic and selenium species in fly ash/organic waste-amended soils using ion chromatography-inductively coupled plasma mass spectrometry

Journal Article · Fri Jan 15 04:00:00 EST 1999 · Environmental Science and Technology

DOI:https://doi.org/10.1021/es980409c· OSTI ID:318716

Jackson, B P; Miller, W P ^[1]

---

1. Univ. of Georgia, Athens, GA (United States). Dept. of Crop and Soil Sciences

Mixing coal fly ash with an organic waste increases macronutrient content and may make land application of fly ash a viable disposal alternative. However, trace element chemistry of these mixed waste products warrants investigation. Speciation of As and Se in soil solutions of fly ash-, poultry litter- and sewage sludge-amended soils was determined over a 10-day period by ion chromatography coupled to inductively coupled plasma mass spectrometry (IC-ICP-MS). Detection limits were 0.031, 0.028, 0.051, 0.161, 0.497, and 0.660 {micro}g L{sup {minus}1} for dimethylarsinate (DMA), As(III), monomethylarsonate (MMA), As(V), Se(IV), and Se(VI), respectively. Arsenic was highly water-soluble from poultry litter and appeared to be predominantly As(V). Arsenic(V) was the predominant species in soil amended with two fly ashes. Application of fly ash/poultry litter mixtures increased As solubility and led to the prevalence of DMA as the major As species. DMA concentrations of these soil solutions decreased rapidly over the sampling period relative to As(V), suggesting that DMA readily underwent mineralization in the soil solution. Se(VI) was the predominant soluble Se species in all treatments indicating rapid oxidation of Se(IV) initially solubilized from the fly ashes.

• OSTI ID: 318716
• Journal Information: Environmental Science and Technology, Journal Name: Environmental Science and Technology Journal Issue: 2 Vol. 33; ISSN ESTHAG; ISSN 0013-936X
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
AGRICULTURAL WASTES
ARSENIC
FLY ASH
GROUND DISPOSAL
ION EXCHANGE CHROMATOGRAPHY
MASS SPECTROSCOPY
SELENIUM
SOIL CHEMISTRY
SOILS
WASTE PRODUCT UTILIZATION