Rate constants for reaction of hydroxyl radicals with several drinking water contaminants
Article Abstract:
Relative rate methods were used to measure rate constants for reactions of the hydroxyl radical with possible organic contaminants in drinking water. Some 25 contaminants were studied, including solvents, aromatics and pesticides. Structure-activity relationships were used to estimate rate constants for 19 additional compounds. The results show that hydroxyl is a fairly nonselective radical toward bonds between carbon and hydrogen. The rate constants can be used to calculate organic compounds' hydroxyl-induced oxidation rates in aqueous systems.
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:
Analytical interferences of mercuric chloride preservative in environmental water samples: determination of organic compounds isolated by continuous liquid-liquid extraction or closed-loop stripping
Article Abstract:
A study on analytical interferences in samples of groundwater preserved with mercuric chloride was conducted. The interferences were examined while organic compounds were being determined. The analytical isolation method influenced the type of interference. A mercuric chloride 'peak' was observed to interfere with the determination of coeluting organic analytes when liquid-liquid extraction was used on the water samples. Closed-loop stripping purged the mercuric chloride.
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:
Analyte stability studies conducted during the National Pesticide Survey
Article Abstract:
Studies of the analyte stability of final extracts and samples of well water were a key component of the National Pesticide Survey (NPS). The NPS measured the amount of pesticides in wells of drinking water. Some 147 compounds were spiked into samples of well water, and 26 of these compounds exhibited as much as 100% loss. Samples of well water had been stored for 14 days at four degrees Celsius. Some 121 analytes in the well water exhibited stability.
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: Tonotopic organization of the auditory cortex: pitch versus frequency representation. The Benefits of Recycling
- Abstracts: Predominant expression of T cell receptor V alpha7 in tumor-infiltrating lymphocytes of uveal melanoma
- Abstracts: Predominant expression of T cell receptor V alpha7 in tumor-infiltrating lymphocytes of uveal melanoma. part 2
- Abstracts: The role of B cells for in vivo T cell responses to a Friend virus-induced leukemia. T cell antigen receptor-mediated activation of phospholipase C requires tyrosine phosphorylation
- Abstracts: Occurrence of chlorate in hypochlorite solutions used for drinking water disinfection. Physical and chemical characterization of indoor aerosols resulting from the use of tap water in portable home humidifiers