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Supercritical CO2 Fluid Extraction of Imazaquin From Soil

Published online by Cambridge University Press:  12 June 2017

Krishna N. Reddy  and
Martin A. Locke
Krishna N. Reddy
Affiliation:
South. Weed Sci. Lab., USDA-ARS, Stoneville, MS 38776
Martin A. Locke
Affiliation:
South. Weed Sci. Lab., USDA-ARS, Stoneville, MS 38776
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Abstract

Feasibility of supercritical CO2 fluid extraction of imazaquin from spiked soil (3.21 μmol kg-1) as an alternative to a conventional extraction method was investigated. The supercritical fluid extraction method involved single-step extraction of herbicide from soil with no further sample cleanup procedures. Extraction parameters were optimized for maximum herbicide recovery. Adding water as a modifier to air-dried soil significantly improved herbicide recovery. Extracting a 1-g soil sample with supercritical CO2 at 0.80 g ml-1 density and 3 ml min-1 flow rate, 80 C extraction temperature, 6 min static extraction followed by 25 min dynamic extraction, and analyte trap temperature of 40 C was optimum for maximum herbicide recovery. When optimum supercritical fluid extraction conditions were used, imazaquin recovery from three texturally different soils ranged from 55 to 64%, which was comparable to a conventional extraction method (63%). The supercritical fluid extraction method consumed 4 ml methanol and 75 ml supercritical CO2 and took approximately 1 h for sample extraction.

Keywords

Imazaquin, 2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-3-quinolinecarboxylic acidHerbicide residueHPLCimidazolinone herbicide
Type
Soil, Air, and Water
Information
Weed Science , Volume 42 , Issue 2 , June 1994 , pp. 249 - 253
Copyright
Copyright © 1994 by the Weed Science Society of America 

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References

Literature Cited

1. Anderson, M. R., Swanson, J. T., Porter, N. L., and Richter, B. E. 1989. Supercritical fluid extraction as a sample introduction method for chromatography. J. Chromatogr. Sci. 27:371–377.Google Scholar
2. Ashraf-Khorassani, M. and Levy, J. M. 1990. Quantitative analysis of polymer additives in low density polyethylene using supercritical fluid extraction/supercritical fluid chromatography. J. High Resolut. Chromatogr. 13:742–747.CrossRefGoogle Scholar
3. Ashraf-Khorassani, M., Kumar, M. L., Koebler, D. J., and Williams, G. P. 1990. Evaluation of coupled supercritical fluid extraction-cryogenic collection-supercritical fluid chromatography (SFE-CC-SFC) for quantitative and qualitative analysis. J. Chromatogr. Sci. 28:599–604.Google Scholar
4. Curran, W. S., Liebl, R. A., and Simmons, F. W. 1992. Effects of tillage and application method on clomazone, imazaquin, and imazethapyr persistence. Weed Sci. 40:482–489.Google Scholar
5. Hawthorne, S. B. 1990. Analytical-scale supercritical fluid extraction. Anal. Chem. 62:633A–642A.Google Scholar
6. Howard, A. L. and Taylor, L. T. 1992. Quantitative supercritical fluid extraction of sulfonylurea herbicides from aqueous matrices via solid phase extraction disks. J. Chromatogr. Sci. 30:374–382.Google Scholar
7. Howard, A. L. and Taylor, L. T. 1993. Considerations for analytical supercritical fluid extraction of sulfonyl ureas employing a modified fluid. J. High Resolut. Chromatogr. 16:39–45.Google Scholar
8. Knipe, C. R., Gere, D. R., and McNally, M. E. 1992. Supercritical fluid extraction: Developing a turnkey method. Pages 251–265 in Bright, F. and McNally, M. E., eds. Supercritical Fluid Technology. ACS Symp. Ser. 488. Am. Chem. Soc., Washington, DC.Google Scholar
9. Levy, J. M. and Rosselli, A. C. 1989. Quantitative supercritical fluid extraction coupled to capillary gas chromatography. Chromatographia 28:613–616.Google Scholar
10. Levy, J. M., Cavalier, R. A., Bosch, T. N., Rynaski, A. F., and Huhak, W. E. 1989. Multidimensional supercritical fluid chromatography and supercritical fluid extraction. J. Chromatogr. Sci. 27:341–346.CrossRefGoogle Scholar
11. Locke, M. A. 1993. Supercritical CO2 fluid extraction of fluometuron herbicide from soil. J. Agric. Food Chem. 41:1081–1084.CrossRefGoogle Scholar
12. Loux, M. M. and Reese, K. D. 1992. Effect of soil pH on adsorption and persistence of imazaquin. Weed Sci. 40:490–496.Google Scholar
13. Loux, M. M., Liebl, R. A., and Slife, F. W. 1989. Availability and persistence of imazaquin, imazethapyr, and clomazone in soil. Weed Sci. 37:259–267.Google Scholar
14. McNally, M. E. and Wheeler, J. R. 1988. Supercritical fluid extraction coupled with supercritical fluid chromatography for the separation of sulfonylurea herbicides and their metabolites from complex matrices. J. Chromatogr. 435:63–71.Google Scholar
15. McNally, M. E. and Wheeler, J. R. 1988. Increasing extraction efficiency in supercritical fluid extraction from complex matrices. Predicting extraction efficiency of diuron and linuron in supercritical fluid extraction using supercritical fluid chromatographic retention. J. Chromatogr. 447:53–63.CrossRefGoogle Scholar
16. Wheeler, J. R. and McNally, M. C. 1989. Supercritical fluid extraction and chromatography of representative agricultural products with capillary and microbore columns. J. Chromatogr. Sci. 27:534–539.Google Scholar
17. Wigfield, Y. Y. and Lanouette, M. 1993. Supercritical fluid extraction of the fortified residues of fluazifop-P-butyl (Fusilade II) and its major metabolite, fluazifop-P, in onions. J. Agric. Food Chem. 41:84–88.Google Scholar
18. Xie, Q. L., Markides, K. E., and Lee, M. L. 1989. Supercritical fluid extraction-supercritical fluid chromatography with fraction collection for sensitive analytes. J. Chromatogr. Sci. 27:365–370.CrossRefGoogle Scholar
19. Yocklovich, S. G., Sarner, S. F., and Levy, E. J. 1989. A process application of SF extraction and chromatography. Am. Lab. 5:26–32.Google Scholar