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Occurrence of some chlorinated enol lactones and cyclopentene-1,3-diones in chlorine-treated waters

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Occurrence of some chlorinated enol lactones and cyclopentene-1,3-diones in chlorine-treated waters. / Smeds, A.; Franzen, R.; Kronberg, L.

In: Environmental Science and Technology, Vol. 29, No. 7, 1995, p. 1839-1844.

Research output: Contribution to journalArticleScientificpeer-review

Harvard

Smeds, A, Franzen, R & Kronberg, L 1995, 'Occurrence of some chlorinated enol lactones and cyclopentene-1,3-diones in chlorine-treated waters', Environmental Science and Technology, vol. 29, no. 7, pp. 1839-1844. https://doi.org/10.1021/es00007a022

APA

Smeds, A., Franzen, R., & Kronberg, L. (1995). Occurrence of some chlorinated enol lactones and cyclopentene-1,3-diones in chlorine-treated waters. Environmental Science and Technology, 29(7), 1839-1844. https://doi.org/10.1021/es00007a022

Vancouver

Smeds A, Franzen R, Kronberg L. Occurrence of some chlorinated enol lactones and cyclopentene-1,3-diones in chlorine-treated waters. Environmental Science and Technology. 1995;29(7):1839-1844. https://doi.org/10.1021/es00007a022

Author

Smeds, A. ; Franzen, R. ; Kronberg, L. / Occurrence of some chlorinated enol lactones and cyclopentene-1,3-diones in chlorine-treated waters. In: Environmental Science and Technology. 1995 ; Vol. 29, No. 7. pp. 1839-1844.

Bibtex - Download

@article{4efdb4f7697349f8acf841fbb0a91ffa,
title = "Occurrence of some chlorinated enol lactones and cyclopentene-1,3-diones in chlorine-treated waters",
abstract = "Enol lactones (5-dichloromethylene-2-furanones) and 2,2- dichlorocyclopentene-1,3-diones, a total of six compounds, were synthesized and subsequently qualitatively and quantitatively determined in a sample of chlorination stage liquor from the bleaching of softwood kraft pulp (CBL), in chlorine-treated natural humic water (HW), and in three samples of drinking water treated with various disinfectants (DW1-3). All the compounds could be observed in the samples, in concentrations ranging from 2 to 170 μg/L in CBL, from 7 to 65 ng/L in HW, and at most a few nanograms per liter in DW1- 3. The compounds were found to be weakly mutagenic in the Ames assay (strain TA100 without metabolic activation). The contribution of the compounds to the total mutagenicity in the studied samples was negligible. The compounds were unstable in aqueous solutions at pH 7.0, and under these conditions they were in part converted to 5-(dichloromethyl)-5-hydroxy-2-furanones. In acidified methanol, the enol lactones were partially converted to 5-(dichloromethyl)- 5-methoxy-2-furanones.",
author = "A. Smeds and R. Franzen and L. Kronberg",
year = "1995",
doi = "10.1021/es00007a022",
language = "English",
volume = "29",
pages = "1839--1844",
journal = "Environmental Science and Technology",
issn = "0013-936X",
publisher = "American Chemical Society",
number = "7",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Occurrence of some chlorinated enol lactones and cyclopentene-1,3-diones in chlorine-treated waters

AU - Smeds, A.

AU - Franzen, R.

AU - Kronberg, L.

PY - 1995

Y1 - 1995

N2 - Enol lactones (5-dichloromethylene-2-furanones) and 2,2- dichlorocyclopentene-1,3-diones, a total of six compounds, were synthesized and subsequently qualitatively and quantitatively determined in a sample of chlorination stage liquor from the bleaching of softwood kraft pulp (CBL), in chlorine-treated natural humic water (HW), and in three samples of drinking water treated with various disinfectants (DW1-3). All the compounds could be observed in the samples, in concentrations ranging from 2 to 170 μg/L in CBL, from 7 to 65 ng/L in HW, and at most a few nanograms per liter in DW1- 3. The compounds were found to be weakly mutagenic in the Ames assay (strain TA100 without metabolic activation). The contribution of the compounds to the total mutagenicity in the studied samples was negligible. The compounds were unstable in aqueous solutions at pH 7.0, and under these conditions they were in part converted to 5-(dichloromethyl)-5-hydroxy-2-furanones. In acidified methanol, the enol lactones were partially converted to 5-(dichloromethyl)- 5-methoxy-2-furanones.

AB - Enol lactones (5-dichloromethylene-2-furanones) and 2,2- dichlorocyclopentene-1,3-diones, a total of six compounds, were synthesized and subsequently qualitatively and quantitatively determined in a sample of chlorination stage liquor from the bleaching of softwood kraft pulp (CBL), in chlorine-treated natural humic water (HW), and in three samples of drinking water treated with various disinfectants (DW1-3). All the compounds could be observed in the samples, in concentrations ranging from 2 to 170 μg/L in CBL, from 7 to 65 ng/L in HW, and at most a few nanograms per liter in DW1- 3. The compounds were found to be weakly mutagenic in the Ames assay (strain TA100 without metabolic activation). The contribution of the compounds to the total mutagenicity in the studied samples was negligible. The compounds were unstable in aqueous solutions at pH 7.0, and under these conditions they were in part converted to 5-(dichloromethyl)-5-hydroxy-2-furanones. In acidified methanol, the enol lactones were partially converted to 5-(dichloromethyl)- 5-methoxy-2-furanones.

UR - http://www.scopus.com/inward/record.url?scp=0029071371&partnerID=8YFLogxK

U2 - 10.1021/es00007a022

DO - 10.1021/es00007a022

M3 - Article

VL - 29

SP - 1839

EP - 1844

JO - Environmental Science and Technology

JF - Environmental Science and Technology

SN - 0013-936X

IS - 7

ER -