Bioaccessibility of Metals in Soils for Different Liquid to Solid Ratios in Synthetic Gastric Fluid

Autor:	Paul J. Lioy, Stephanie C. Hamel, Brian Buckley
Rok vydání:	1998
Předmět:	Cadmium Soil test Waste management Extraction (chemistry) chemistry.chemical_element General Chemistry complex mixtures Soil contamination Matrix (chemical analysis) Chromium chemistry Environmental chemistry Soil water Environmental Chemistry Arsenic
Zdroj:	Environmental Science & Technology. 32:358-362
ISSN:	1520-5851 0013-936X
DOI:	10.1021/es9701422
Popis:	The bioaccessible fraction of metals in the stomach has been estimated for two soil materials using laboratory synthesized gastric juice. Heavy metals present in each soil matrix were extracted and measured, as a technique to simulate metal solubilization processes that occur in the human stomach. The results from the synthetic gastric juice extraction were compared to values obtained using a modified EPA concentrated acid extraction procedure, method 3051, on the same soils. The experiments evaluated the effect of varying the liquid to solid ratio on gastric juice extraction efficiency for arsenic (As), chromium (Cr), nickel (Ni), cadmium (Cd), and lead (Pb). Soil samples employed were a National Institute of Standards and Technology (NIST) standard soil (Montana SRM 2710) and a composite hazardous waste contaminated soil from Jersey City, NJ. The current work demonstrates that bioaccessibility is not the same for each metal within a given soil, nor between the soils. Estimates of the bioaccessible fract...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0b213a4f6d394c28b9441d612e1c44f3 https://doi.org/10.1021/es9701422 Zobrazit plný text záznamu