Source determination of benzotriazoles in sediment cores from two urban estuaries on the Atlantic Coast of the United States

MARINE POLLUTION BULLETIN

卷:101

Article

Cantwell, Mark G.¹  Sullivan, Julia C.²  Katz, David R.¹  Burgess, Robert M.¹  Hubeny, J. Bradford³  King, John⁴ 

[1] US EPA, Off Res & Dev, Narragansett, RI 02882 USA

[2] Oak Ridge Inst Sci & Educ, Narragansett, RI 02882 USA

[3] Salem State Univ, Dept Geol Sci, Salem, MA 01970 USA

[4] Univ Rhode Isl, Grad Sch Oceanog, Narragansett, RI 02882 USA

关键词: Emerging contaminant;    Benzotriazole;    UV stabilizer;    Sediment core;    Corrosion inhibitor;    Persistent chemical;   

DOI  :  10.1016/j.marpolbul.2015.10.075

来源: Elsevier

【 摘 要 】

Benzotriazoles (BZTs) are used in a broad range of commercial and industrial products, particularly as metal corrosion inhibitors and as ultraviolet (UV) light stabilizer additives in plastics and polymers. In this study, dated sediment cores from two east coast estuaries were analyzed for commonly used BZTs. In Narragansett Bay, UV stabilizing BZTs (UV-BZTs) were present at high levels from 1961 on, reflecting their patent date, local production and long-term preservation in sediment In Salem Sound, UV-BZTs were present at concentrations consistent with other coastal marine locations not influenced by BZT production. Anticorrosive BZTs (AC-BZTs) were found in both cores, with the highest levels reported to date present in Narragansett Bay, indicating sorption to, and preservation in, sediments. This study revealed that both classes of BZTs have remained structurally intact over time in coastal sediment cores, demonstrating their resistance to degradation and persistence in environmental compartments. Published by Elsevier Ltd.

【 授权许可】

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