Chemosphere

, volume 31 , issue 5 , pages 3323-3344

Photodegradation of polychlorinated biphenyl congeners using simulated sunlight and diethylamine

Yawjian Lin ¹

Joel Baker ²

Hide authors affiliations Show authors affiliations: 2 affiliations

Department of Natural Sciences University of Maryland Eastern Shore Princess Anne, MD 21853, U.S.A. |

Chesapeake Biological Laboratory, University of Maryland Solomons, Md 20688, U.S.A. |

Publication type: Journal Article

Publication date: 1995-09-01

Elsevier

Chemosphere

scimago Q1

SJR: 1.896

CiteScore: 18.1

Impact factor: —

ISSN: 00456535, 18791298

DOI: 10.1016/0045-6535(95)00177-a

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General Chemistry

General Medicine

Environmental Chemistry

Environmental Engineering

Health, Toxicology and Mutagenesis

Public Health, Environmental and Occupational Health

Pollution

Abstract

Photodegradation of polychlorinated biphenyls (PCBs) can be an important natural decomposition mechanism. As most PCB congeners do not strongly absorb wavelength above 300 nm, sensitizers are used in the transfer of light energy to the PCB molecule in order to enhance their degradation. The objectives of this study were to determine the rate-order of reaction and the photodegradation rates of PCB congeners by simulated sunlight in the presence of diethylamine. Five PCB congeners (66, 101, 110, 118, and 138) with diethylamine were exposed to simulated sunlight from 0, 1, 2, 4, 8, to 24 hr. These five congeners constitute 45.45 % of all the Aroclor 1254 congeners. Half-lives of these congeners, after exposure to simulated sunlight and diethylamine, ranged from 3.4 to 9.9 hr. The photodegradation rate constant of the PCB congeners varied from 0.07±0.01 to 0.20±0.04 hr−1. The photodegradation rate was proportional to the concentration of the PCB congener suggesting a pseudo first order reaction of PCB photodegradation. The data also indicated that the photodegradation is independent of the concentration of diethylamine. Degradation of congener 101 was 5 times faster with simulated than with natural sunlight. The product quantum yield of PCB congeners ranged from 2.6±0.3 to 7.5±0.2 × 10−4 in the presence of diethylamine.

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Lin Y., Baker J. Photodegradation of polychlorinated biphenyl congeners using simulated sunlight and diethylamine // Chemosphere. 1995. Vol. 31. No. 5. pp. 3323-3344.

GOST all authors (up to 50) Copy

Lin Y., Baker J. Photodegradation of polychlorinated biphenyl congeners using simulated sunlight and diethylamine // Chemosphere. 1995. Vol. 31. No. 5. pp. 3323-3344.

RIS |

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RIS Copy

TY - JOUR

DO - 10.1016/0045-6535(95)00177-a

UR - https://doi.org/10.1016/0045-6535(95)00177-a

TI - Photodegradation of polychlorinated biphenyl congeners using simulated sunlight and diethylamine

T2 - Chemosphere

AU - Lin, Yawjian

AU - Baker, Joel

PY - 1995

DA - 1995/09/01

PB - Elsevier

SP - 3323-3344

IS - 5

VL - 31

SN - 0045-6535

SN - 1879-1298

ER -

BibTex |

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BibTex (up to 50 authors) Copy

@article{1995_Lin,

author = {Yawjian Lin and Joel Baker},

title = {Photodegradation of polychlorinated biphenyl congeners using simulated sunlight and diethylamine},

journal = {Chemosphere},

year = {1995},

volume = {31},

publisher = {Elsevier},

month = {sep},

url = {https://doi.org/10.1016/0045-6535(95)00177-a},

number = {5},

pages = {3323--3344},

doi = {10.1016/0045-6535(95)00177-a}

}

MLA

Cite this

MLA Copy

Lin, Yawjian, et al. “Photodegradation of polychlorinated biphenyl congeners using simulated sunlight and diethylamine.” Chemosphere, vol. 31, no. 5, Sep. 1995, pp. 3323-3344. https://doi.org/10.1016/0045-6535(95)00177-a.

Publisher

Elsevier

Journal

Chemosphere

scimago Q1

SJR

1.896

CiteScore

18.1

Impact factor

—

ISSN

00456535 (Print)

18791298