Sedimentary record of polychlorinated naphthalene concentrations and deposition fluxes in a dated lake core
Journal Article
·
· Environmental Science and Technology
Polychlorinated naphthalene (PCN) concentrations and fluxes were measured in a dated core from the profundal sediments of Esthwaite Water, a seasonally anoxic semirural lake in northwest England. The vertical profile shows that the {Sigma}PCN flux remained fairly constant at 0.4--0.6 {micro}g m{sup {minus}2} y{sup {minus}1} from depth until the early 1940s, escalating sharply thereafter to a subsurface maximum of {approximately}12 {micro}g m{sup {minus}2} y{sup {minus}1} in the late 1950s to mid-1960s followed by a 4-fold decrease to the sediment-water interface. The {Sigma}PCN maximum predates the {Sigma}PCB maximum by {approximately}20 years, broadly consistent with the time lapse in the production and wide use of both compounds. Furthermore, there was a secondary peak in the profiles of both compound classes corresponding to the period of maximum input of the other compound class. This may be a result of PCNs present as impurities in the manufacture of PCBs and vice versa. The vertical profiles of the individual PCN homologue groups closely followed that of the {Sigma}PCN profile with no overall change in the mass percent contribution of individual PCN congeners throughout the core. To their knowledge, this is the first study to reconstruct the historical record of PCNs in the environment.
- Research Organization:
- Lancaster Univ. (GB)
- OSTI ID:
- 20014614
- Journal Information:
- Environmental Science and Technology, Journal Name: Environmental Science and Technology Journal Issue: 1 Vol. 34; ISSN ESTHAG; ISSN 0013-936X
- Country of Publication:
- United States
- Language:
- English
Similar Records
Polychlorinated naphthalenes and coplanar polychlorinated biphenyls in arctic air
Isomer-specific analysis and toxic evaluation of polychlorinated naphthalenes in soil, sediment, and biota collected near the site of a former chlor-alkali plant
Concentrations and deposition fluxes of polynuclear aromatic hydrocarbons and heavy metals in the dated sediments of a rural English lake
Journal Article
·
Sat Oct 31 23:00:00 EST 1998
· Environmental Science and Technology
·
OSTI ID:323744
Isomer-specific analysis and toxic evaluation of polychlorinated naphthalenes in soil, sediment, and biota collected near the site of a former chlor-alkali plant
Journal Article
·
Tue Sep 01 00:00:00 EDT 1998
· Environmental Science and Technology
·
OSTI ID:655392
Concentrations and deposition fluxes of polynuclear aromatic hydrocarbons and heavy metals in the dated sediments of a rural English lake
Journal Article
·
Wed Sep 01 00:00:00 EDT 1993
· Environmental Toxicology and Chemistry; (United States)
·
OSTI ID:5816024