Use of extraction disks for tracer enrichment of various pesticides from river water and simulated seawater samples followed by liquid chromatography-rapid scanning UV-visible and thermospray-mass spectrometry detection
Article Abstract:
A preconcentration method based on physicochemical principles for the identification and quantitation of pesticides in water matrices is discussed. Several pesticides, atrazine metabolites, organophosphorous, phenylurea, propioanilide and carbamate were isolated from river water and simulated seawater and trace enriched. Liquid chromatography with rapid-scanning UV-visible spectrometry was used to determine the recoveries of pesticides and atrazine metabolites. The advantages of the combination of the extraction disks with the spectrometry technique used were demonstrated.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1993
User Contributions:
Comment about this article or add new information about this topic:
Similarities in the chemical composition fo carbonate groundwaters and seawater
Article Abstract:
An analysis of chemical elements in spring water flowing through carbonate rock in Ash Meadows in southern Nevada and Death Valley, California showed that the chemical concentrations of trace elements followed the similar concentrations in seawater, both ancient and present. One possible explanation for the similarity in chemical concentration between spring water and ancient seawater is the rainfall theory, where rainfall deposited the trace elements on the carbonate rock, providing a record of ancient seawater chemical composition.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1998
User Contributions:
Comment about this article or add new information about this topic:
Characterization of individual particles in the North Sea surface microlayer and underlying seawater: comparison with atmospheric particles
Article Abstract:
The chemical characterization and specific particle type specification of analyzed particles in the microlayer and the underlying bulk water are discussed. Electron probe x-ray microanalysis and laser microprobe mass analysis were used on five pairs of North Sea bulk waters and their corresponding surface microlayer samples. Results were compared with atmospheric and riverine particle data. Data from both environments exhibited similar particle abundances.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1992
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Evaluation of ELISA kits followed by liquid chromatography-atmospheric pressure chemical ionization-mass spectrometry for the determination of organic pollutants in industrial effluents
- Abstracts: Characterization of polychlorinated biphenyl isomers in Sovol and Trichlorodiphenyl formulations by high-resolution gas chromatography with electron capture detection and high-resolution gas chromatography-mass spectrometry techniques
- Abstracts: Hydrocarbon wastes at petroleum- and creosote-contaminated sites: rapid characterization of component classes by thin-layer chromatography with flame ionization detection
- Abstracts: Rebuttal to comment on 'Destruction of organohalides in water using metal particles: carbon tetrachloride/water reactions with magnesium, tin, and zinc
- Abstracts: PM-10 high-volume collection and quantitation of semi- and nonvolatile phenols, methoxylated phenols, alkanes, and polycyclic aromatic hydrocarbons from winter urban air and their relationship to wood smoke emissions