Arsenic speciation in soil using high performance liquid chromatography/inductively coupled plasma/mass spectrometry

Technical Report · Thu Aug 01 04:00:00 EDT 1996

DOI:https://doi.org/10.2172/432912· OSTI ID:432912

Bass, D A; Yaeger, J S; Parish, K J; Crain, J S; Kiely, J T; Gowdy, M J ^[1]; Mohrman, G B; Besmer, M G ^[2]

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1. Argonne National Lab., IL (United States)
2. Rocky Mountain Arsenal, Commerce City, CO (United States)

A method has been developed to identify and quantify As(III), As(V), and organoarsenic compounds in soil samples from the Rocky Mountain Arsenal (RMA) by high performance liquid chromatography/inductively coupled plasma/mass spectrometry (HPLC/ICP/MS). The soils were extracted using tetrabutylammonium hydroxide (TBAH) and sonication. The percentages of As(III), As(V), and organoarsenic species extracted from soil samples were 30, 50, and 100 respectively. The arsenic species were not altered during the extraction process. They were separated by reversed-phase, ion-pairing, HPLC using a microbore Inertsil-ODS{trademark} column. The HPLC column effluent was introduced into an ICP/MS system using a direct injection nebulizer (DIN). Detection limits of less than 1 pg were readily obtained for each arsenic species. Internal standards are recommended to increase accuracy and precision. Soil samples spiked with arsenic oxide, sodium arsenate, dimethylarsinic acid (DMAA), and chlorovinyl arsenious acid (CVAA) were extracted, identified and quantified with the HPLC/ICP/MS system. The soil samples were analyzed in support of the analytical needs of a thermal desorption treatability study being conducted at the RMA.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: USDOE Assistant Secretary for Human Resources and Administration, Washington, DC (United States); Department of Defense, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 432912
• Report Number(s): ANL/ACL--96/2; ON: DE97002506
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
ARSENIC
ECOLOGICAL CONCENTRATION
EXPERIMENTAL DATA
ICP MASS SPECTROSCOPY
LIQUID COLUMN CHROMATOGRAPHY
ORGANIC ARSENIC COMPOUNDS
REMEDIAL ACTION
SITE CHARACTERIZATION