Historical sediment record and levels of PCBs in sediments and mangroves of Jobos Bay, Puerto Rico

Küçük Resim Yok

Tarih

2016

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Elsevier

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Özet

Polychlorinated biphenyls (PCBs) were quantified in 18 surface sediment samples, 1 sediment core, and several mangrove tissue samples collected in Jobos Bay, Puerto Rico in September 2013. Total PCBs in surface sediments ranged from 0.42 to 1232 ng g(-1) dw. Generally, higher levels were observed near-shore close to urban and industrial areas. The levels suggest significant pollution in Jobos Bay with respect to PCBs. Two-thirds of the sites were dominated by lighter PCB congeners (tri- to penta-chlorinated PCBs) while one-third had heavy PCB congeners (heka- to octa-chlorinated PCBs) dominant. Total PCBs in a sediment core indicated levels fluctuating according to historical usage patterns. Total PCBs were measured in mangal leaves (14-747 ng g(-1) dw), roots (0:26120 ng g(-1) dw), and seeds (16-93 ng g(-1) dw), suggesting bioaccumulation from sediments. This is the first report of a historical profile of PCBs in the study area and of PCB bioaccuinulation in mangroves. This article provides new and, useful information on PCBs in the Caribbean area of the GRULAC region. (C) 2016 Elsevier B.V. All rights reserved.

Açıklama

Anahtar Kelimeler

PCBs, Surface sediments, Sediment core, Mangrove tissue, Jobos Bay, Puerto Rico

Kaynak

Science Of The Total Environment

WoS Q Değeri

Q1

Scopus Q Değeri

Q1

Cilt

573

Sayı

Künye