Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/25532
Title: Uptake and depuration of PCB-153 in edible shrimp Palaemonetes varians and human health risk assessment
Authors: Grilo, T. F. 
Cardoso, P. G. 
Pato, P. 
Duarte, A. C. 
Pardal, M. A. 
Keywords: Palaemonetes varians; PCB-153; Bioaccumulation; Depuration; Food safety; Human health
Issue Date: 2014
Publisher: Elsevier Inc.
Keywords: Palaemonetes varians; PCB-153; Bioaccumulation; Depuration; Food safety; Human health
Issue Date: 2014
Publisher: Elsevier Inc.
Abstract: A medium-term mesocosm exposure study was conducted to elucidate bioaccumulation and depuration of polychlorinated biphenyl congener 153 (PCB-153) in edible shrimp Palaemonetes varians. Over the 15-day exposure period, shrimp under different exposure concentrations exhibited a significant increase in PCB153 concentration compared with control organisms. Distinct bioaccumulation patterns and uptake rates were observed depending on the exposure concentrations. For low PCB-153 exposure levels (0.25 μg L 1), accumulation followed a saturation model, reaching an apparent steady state after fifteen days exposure. For intermediate (2.5 μg L 1) and high PCB-153 levels (25 μg L 1), accumulation was faster and linear. In addition, the bioaccumulation rate was not proportional to PCB-153 concentration, and the bioaccumulation was higher at intermediate exposure concentrations. Regarding the depuration phase, P. varians lost up to 30% of PCB-153 after 72h and levels continued slowly to decrease until the end of the 30-d experimental period. However, PCB-153 levels in shrimp did not reach background values, and those exposed to moderate and high PCB-153 concentrations presented contamination levels much higher than the regulatory limit for human food consumption (75ngg 1 ww for Σ6 PCB).
URI: http://hdl.handle.net/10316/25532
DOI: 10.1016/j.ecoenv.2013.12.020
Rights: openAccess
Appears in Collections:FCTUC Ciências da Vida - Artigos em Revistas Internacionais

Files in This Item:
File Description SizeFormat
1-s2.0-S0147651313005447-main.pdf458.43 kBAdobe PDFView/Open
Show full item record

SCOPUSTM   
Citations

2
checked on Jun 25, 2019

WEB OF SCIENCETM
Citations

1
checked on Jun 25, 2019

Page view(s)

65
checked on Aug 20, 2019

Download(s)

34
checked on Aug 20, 2019

Google ScholarTM

Check

Altmetric

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.