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| Web URL(s): | https://dl.sciencesocieties.org/publications/jeq/pdfs/30/4/1231
Last checked: 12/14/2016
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https://dl.sciencesocieties.org/publications/jeq/articles/30/4/1231
Last checked: 12/14/2016
Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Conder, Jason M.;
Lanno, Roman P.;
Basta, Nicholas T. |
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| Author Affiliation: | Conder and Lanno: Department of Zoology, Oklahoma State University, Stillwater, OK; and Basta: Department of Plant and Soil Sciences, Oklahoma State University, Stillwater, OK |
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| Title: | Assessment of metal availability in smelter soil using earthworms and chemical extractions |
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| Source: | Journal of Environmental Quality. Vol. 30, No. 4, July/August 2001, p. 1231-1237. |
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| Publishing Information: | Madison, Wisconsin: American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America |
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| # of Pages: | 7 |
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| Keywords: | TIC Keywords: Metals; Assessment; Soils; Earthworms; Extraction; Remediation; Heavy metals; Toxicity; Sewage sludge; Rock phosphate; DTPA; Zinc; Lead; Lime; Soil amendments; Calcium nitrate; Cadmium; pH; Soil toxicity; Chemicals
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| Abstract/Contents: | "Chemical immobilization is a relatively inexpensive in situ remediation method that reduces soil contaminant solubility, but the ability of this remediation treatment to reduce heavy metal bioavailability and ecotoxicity to soil invertebrates has not been evaluated. Our objectives were to (i) assess the ability of chemical immobilization amendments (municipal sewage sludge biosolids and rock phosphate) to reduce metal bioavailability and toxicity in a toxic metal-contaminated smelter soil and (ii) evaluate soil extraction methods using Ca(o3)2 solution or ion-exchange membranes coated with diethylenetriaminepentaacetic acid (DTPA) as surrogate measures of metal bioavailability and ecotoxicity. We treated a soil contaminated by Zn and Pb milling and smelting operations and an uncontaminated control soil with lime-stabilized municipal biosolids (LSB), rock phosphate (RP), or anaerobically digested municipal biosolids (SS) and evaluated lethality of the remediated soils to earthworm (Eisenia fetida Savigny). Lime-stabilized municipal biosolids was the only remediation amendment to successfully immobilize lethal levels of ZRn in the smelter soil (14-d cumulative mortality <15%). Calcium nitrate-extractable Zn in the lethal Zn smelter soil-amendment combinations was 11.5 to 18.2 mmol/kg, compared with the nonlethal LSB amended soil (0.62 mmol/kg). The Ca(3)2-extractable Zn-based median lethal concentration 5O(LC^D#50) of 6.33 mmol/kg previously developed in Zn-spiked artificial soils was applicable in the remediated smelter soils despite a 14-fold difference in total Zn concentration. Chelating ion-exchange membrane uptake among the soils was highly variable (mean CV = 39%) compared with the Ca(3)2-extraction (mean CV = 1.9%) and not well related to earthworm toxicity." |
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| Language: | English |
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| References: | 47 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Conder, J. M., R. P. Lanno, and N. T. Basta. 2001. Assessment of metal availability in smelter soil using earthworms and chemical extractions. J. Environ. Qual. 30(4):p. 1231-1237. |
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| Web URL(s):
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Last checked: 12/14/2016
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https://dl.sciencesocieties.org/publications/jeq/articles/30/4/1231
Last checked: 12/14/2016
Access conditions: Item is within a limited-access website |
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MSU catalog number: S 900 .J6 |
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