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- E-ISSN 2288-8985
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Determination of Amitrole in Water Samples by Evaporation and GC/MS
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2003, v.16 no.6, pp.483-487
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(2003). Determination of Amitrole in Water Samples by Evaporation and GC/MS. Analytical Science and Technology, 16(6), 483-487.
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Abstract
Amitrole is well-known as a non-selective herbicide and it is able to cause contamination of driking water as well as pollution of ground water and surface water. However, it is difficult to extract from water because it has a high solubility for water whereas a low solubility for general organic solvents. This method is described for the determination of amitrole in water samples by GC/MS. After evaporation of 10 mL water sample by a vacuum evaporator, amitrole was derivatized with isobutyl chloroformate (iso-BCF) on room temperature for 15~20 min. As a result, the sensitivity for GCfMS was improved as N-isobutoxycarbonyl amitrole derivative was formed. The linearity of the calibration curve showed good as 0.997. The recoveries were obtained more than 94.9% and relative standard deviations were less than 2.8% at <TEX>$1.0{\mu}g/L$</TEX>, <TEX>$10.0{\mu}g/L$</TEX> and <TEX>$100.0{\mu}g/L$</TEX>. The limit of detection showed <TEX>$0.1{\mu}g/L$</TEX> with a signal-to-noise ratio (S/N) of 3.
- keywords
- amitrole, isobutyl chloroformate, GC/MS
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