Method development for determination of fluroxypyr in soil

M. Halimah, Y. A. Tan, Ismail Sahid

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Four methods were developed for the analysis of fluroxypyr in soil samples from oil palm plantations. The first method involved the extraction of the herbicide with 0.05 M NaOH in methanol followed by purification using acid base partition. The concentrated material was subjected to derivatization and then cleaning process using a florisil column and finally analyzed by gas chromatography (GC) equipped with electron capture detector (ECD). By this method, the recovery of fluroxypyr from the spiked soil ranged from 70 to 104% with the minimum detection limit at 5 μg/kg. The second method involved solid liquid extraction of fluroxypyr using a horizontal shaker followed by quantification using high performance liquid chromatography (HPLC) equipped with UV detector. The recovery of fluroxypyr using this method, ranged from 80 to 120% when the soil was spiked with fluroxypyr at 0.1-0.2 μg/g soil. In the third method, the recovery of fluroxypyr was determined by solid liquid extraction using an ultrasonic bath. The recovery of fluroxypyr at spiking levels of 4-50 μg/L ranged from 88 to 98% with relative standard deviations of 3.0-5.8% with a minimum detection limit 4 μg/kg. In the fourth method, fluroxypyr was extracted using the solid liquid extraction method followed by the cleaning up step with OASIS® HLB (polyvinyl dibenzene). The recovery of fluroxypyr was between 91 and 95% with relative standard deviations of 4.2-6.2%, respectively. The limit of detection in method 4 was further improved to 1 μg/kg. When the weight of soil used was increased 4 fold, the recovery of fluroxypyr at spiking level of 1-50 μg/kg ranged from 82-107% with relative standard deviations of 0.5-4.7%.

Original languageEnglish
Pages (from-to)765-777
Number of pages13
JournalJournal of Environmental Science and Health - Part B Pesticides, Food Contaminants, and Agricultural Wastes
Volume39
Issue number5-6
DOIs
Publication statusPublished - 2004

Fingerprint

fluroxypyr
Soil
Soils
Recovery
soil
Cleaning
Liquids
Limit of Detection
methodology
detection limit
Ultraviolet detectors
liquid
Palm oil
vinyl compounds
cleaning
Herbicides
detectors
High performance liquid chromatography
liquids
Gas chromatography

Keywords

  • Fluroxypyr
  • HLB (Polyvinyl dibenzene)
  • Method development
  • OASIS®
  • Soil
  • SPE

ASJC Scopus subject areas

  • Environmental Science(all)
  • Environmental Chemistry
  • Public Health, Environmental and Occupational Health
  • Waste Management and Disposal

Cite this

Method development for determination of fluroxypyr in soil. / Halimah, M.; Tan, Y. A.; Sahid, Ismail.

In: Journal of Environmental Science and Health - Part B Pesticides, Food Contaminants, and Agricultural Wastes, Vol. 39, No. 5-6, 2004, p. 765-777.

Research output: Contribution to journalArticle

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