Multi-Residue Analysis of Frequently Applied Herbicides from Soil Samples Taken in the Area of Halle/S. (FRG)

• Published in: International journal of environmental analytical chemistry Vol. 66; no. 4; pp. 269 - 283
• Main Authors: Holthuis, J.-U., Baumbach, R., Friebe, S., Kraus, G.-J.
• Format: Journal Article
• Language: English
• Published: Amsterdam Taylor & Francis Group 01-05-1997; Gordon and Breach Science
• Subjects: Analysis methods; Analytical chemistry; Applied sciences; bound residues; Chemistry; Chromatographic methods and physical methods associated with chromatography; Exact sciences and technology; Herbicides; HPLC-DAD; Other chromatographic methods; Pollution; soil; Soil and sediments pollution; variability; Europe; Germany; Trace analysis; Solid phase extraction; Chemical analysis; Pesticides; HPLC chromatography; Chemical degradation; Soil pollution; Environmental control; Chemical enrichment; Soils; Reversed phase chromatography; Multicomponent analysis; Ultraviolet detector; Triazine derivatives; Degradation product
• ISSN: 0306-7319; 1029-0397
• DOI: 10.1080/03067319708028369

A high-resolution multimethod is presented for simultaneous determination of frequently applied s-triazine and phenoxyalkanoic acid herbicides extracted from soil samples. The method involves precipitation of interfering humic substances, enrichment of analytes by solid-phase extraction (SPE) and identification by reversed-phase high-performance liquid chromatography coupled to diode-array detection (RP-HPLC-DAD).
Frequent contents of s-triazine residues vary between 10 and 30 μgxkg
−1
dry soil. 50 % of investigated pedogenic material shows s-triazine residues in the range of 10 μgxkg
−1
. Heavily impacted areas (orchards, herbicide storage areas) often show contents in the range from more than 100 up to 433 μgxkg
−1
. Phenoxyalkanoic acid herbicides could be shown to diminish completely within three weeks after application.
An example of temporal and spatial variability of soil's adsorptive behaviour is given.