1986
DOI: 10.1021/jf00069a040
|View full text |Cite
|
Sign up to set email alerts
|

Determination of dicamba and 2,4-D in water and soil by isotope dilution GC/MS

Abstract: An isotope dilution GC/MS technique for the analysis of low part per billion (ppb) concentrations of dicamba and 2,4-D in water and soil is described. Known amounts of stable-labeled isotopes such as dicamba-d, and 2,4-D-d3 are spiked into each sample prior to extraction. Water samples are extracted with methylene choride at pH 51; soil samples are extracted with acetone-hexane at pH 51. Analysis is performed by high-resolution GC/MS, with the mass spectrometer operated in the selected ion monitoring mode, fol… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

0
2
0

Year Published

1988
1988
1997
1997

Publication Types

Select...
5
2

Relationship

0
7

Authors

Journals

citations
Cited by 21 publications
(2 citation statements)
references
References 6 publications
0
2
0
Order By: Relevance
“…Phenoxyacid herbicides are compounds that have presented difficulties in GC analyses. Analytical methodology for these compounds has relied on the use of derivatization steps prior to GC with electron capture detection [2][3][4][5]. In an attempt to avoid the derivatization step, researchers have recently applied LC/MS methods to the analysis for phenoxyacid herbicides.…”
mentioning
confidence: 99%
“…Phenoxyacid herbicides are compounds that have presented difficulties in GC analyses. Analytical methodology for these compounds has relied on the use of derivatization steps prior to GC with electron capture detection [2][3][4][5]. In an attempt to avoid the derivatization step, researchers have recently applied LC/MS methods to the analysis for phenoxyacid herbicides.…”
mentioning
confidence: 99%
“…The procedure is sensitive (1.6 ppb) and applicable to multiple samples, eliminates the need for costly and environmentally hazardous solvents, and does not require any solvent evaporation steps.Dicamba (3,6-dichloro-2-methoxybenzoic acid) is a postemergence herbicide used for the control of broad-leaf weeds in cereals and grasslands. Established methods of dicamba analysis involve its extraction from acidic aqueous media with diethyl ether followed by derivatization and gas chromatographic analysis (Devine and Zweig, 1969; Garbrecht, 1970; Chau and Terry, 1976;Agemian and Chau, 1977;Lopez-Avila et al, 1986). However, these procedures are time-consuming and require expensive pesticide-grade solvents.…”
mentioning
confidence: 99%