Study of the degradation of polydimethylsiloxanes on soil
Article Abstract:
The interaction of poldimethylsiloxanes (PDMS) with an EPA standard soil matrix was studied to shed light on the mechanics of soil-induced degradation of various industrial products. Spiked soil was extracted for PDMS recovery using several analytical techniques, such as gel permeation chromatography TI detection and high-pressure liquid chromatography. The extraction efficiency of the solvents used in the process was also determined. Results indicate that PDMS exhibit a rapid breakdown on standard soil matrix with low silanol content.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1995
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On-line preconcentration and gas chromatographic determination of N-methylcarbamates and their degradation products in aqueous samples
Article Abstract:
The combination of a continuous liquid-slid extraction system and gas chromatography is proposed as an effective approach to analyze the organic constituents of pollutants in environmental samples. Unlike conventional extraction techniques, the new approach is fast, convenient and provides more accurate results. Application of the technology to determine N-methylcarbamates and their degradation products in water is discussed.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1996
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Comment on "Peroxyisobutyryl Nitrate." (comment on Daniel Grosjean et al, Environmental Science and Technology, vol. 28, p. 167, 1994)
Article Abstract:
The conclusion that peroxyacetic nitric anhydride (PAN) and peroxyisobutyric nitric anhydride (PiBN) coelute in the chromatographic system used in the study is questionable. In addition, PiBN cannot be considered an interference in the analysis of PAN using gas electron chromatography with electron capture detection. More solid and convincing evidence should be presented to prove the coelution of PiBN and PAN.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1995
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