Multiresidue method for determination of post-emergence herbicides in water by HPLC/ESI/MS in positive lonization mode

Article Abstract:

Post-emergence (POE) herbicides are foliage-applied products utilized to control weeds that have started to affect the developing crop. A sensitive and specific multiresidue method has been developed, based or reversed-phase liquid chromatograph/mass spectrometry, with an electrospray interface (IC/ESI/MS), for identifying 15 of most representative compounds of a new type of POE herbicides in water samples. The method involved requires passing 2 L of groundwater and 4 L of drinking water samples, respectively, through a 0.5 g graphitized carbon black (GCB) extractor cartridge.

Analysis, Water, Water analysis

---

Automated procedure for extraction of metolachlor from soil

Article Abstract:

An automated robotic procedure was developed to extract metolachlor efficiently from soil. The procedure was demonstrated on a fine-loamy, mixed Udic Haploboroll using existing robotic stations. Results have indicated that duration of equilibration and initial soil pH have no substantial effect on the recovery of metolachlor. Metolachlor recovery, however, is slightly affected by the temperature during perfusion gas interaction. The automated robotic procedure also proved cost effective with regards to reagent cost and reduces hazardous waste generation by 67%.

Usage, Automation, Extraction (Chemistry)

---

Metolachlor and Alachlor Breakdown Product Formation Patterns in Aquatic Field Mesocosms

Article Abstract:

Researchers in Kansas added herbicides to outdoor water tanks simulating various naturally-occurring ecosystems to determine what chemicals result from their breakdown. Tables and figures accompany the article.

United States, Science & research, Kansas, Brief Article, Pollution, Agricultural chemicals industry

Similar abstracts:

• Abstracts: Determination of Cu and Cd content of groundwater colloids by solid sampling graphite furnace atomic absorption spectrometry
• Abstracts: Dark and photoassisted Fe3+-catalyzed degradation of chlorophenoxy herbicides by hydrogen peroxide. Reduction of perchloroalkanes by ferrioxalate-generated carboxylate radical preceding mineralization by the photo-Fenton reaction
• Abstracts: Gas/solid and gas/liquid partitioning of organic compounds: critical evaluation of the interpretation of equilibrium constants
• Abstracts: Predicting the capacity of powdered activated carbon for trace organic compounds in natural waters. Metabolites of alachlor in water: identification bymass spectrometry and chemical synthesis

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.