PCBs and PCDD/FS in Fish and Fish Products and Their Impact on the Human Body Burden in Belgium

Abstract

The concentrations of marker PCBs (28, 52, 101, 118, 138, 153, 180) in fish have been assessed with GC-MS: an average concentration of 540 ng-PCB g(-1) fat (5.02 ng-PCB g(-1) wet weight) was observed. The average concentration of PCDD/Fs, assessed with the CALUX bioassay, amounted to 64 pg-CALUX-TEQ g(-1) fat (0.58 pg-CALUX-TEQ g(-1) wet weight) and that of PCDD/Fs + dioxin-like PCBs amounted to 131 pg-CALUX-TEQ g(-1) fat (1.18 pg-CALUX-TEQ g(-1) wet weight). Results of the PCB congeners analyses show that PCB-153 is the most abundant congener in almost all samples, with also main contributions of the 138- and 180-congeners. For some species such as the sand sole and lemon sole, a fairly constant PCB content, independent of the fat percentage, was observed. For a second group of species such as whelks, cod, and whiting, a positive correlation was observed between their PCB concentration (ng g(-1) fat) and their % of fat. The relationship between marker PCBs and PCDD/Fs concentrations, when plotted on a log scale, fits a straight line (correlation coefficient r = 0.83). With our results on fish and literature data for other food products, intake of marker PCBs and PCDD/Fs could be calculated for the adult population in Belgium (19-60 years old). The Total Daily Intake (TDI) of marker PCBs (ng-PCB day(-1)) ranges between 1690 and 2210. The TDI of PCDD/Fs (pg-CALUX day(-1)) ranges between 80.5 and 122, that of PCDD/Fs + dioxin-like PCBs amounts to 151. When PCDD/Fs in fish are assessed with GC-HRMS, the TDI can be lower. The relative importance of fish regarding marker PCB intake amounts to 15-19%, while regarding PCDD/Fs intake it amounts to 34-51%. Using TDI, the body burden evolution of marker PCBs and PCDD/Fs, with age has been calculated.

Bioaccumulation of six PCB indicator congeners in a heavily polluted water reservoir in Eastern Slovakia: tissue-specific distribution in fish and their parasites

“…In aquatic organisms, most information about PCB substances is related to muscles of fish and fish-eating birds Baeyens et al 2007;Sagerup et al 2009), and very few data are available regarding PCB content in other organs. Only recently, more attention has been paid to a tissue-specific PCB distribution in fish (Monosson et al 2003).…”

Dietary exposure to dioxin-like compounds in three age groups: Results from the Flemish environment and health study

“…For Belgium, several intake assessments of dioxin-like substances are available, based on different food consumption and contamination data and using different methods to combine both in order to estimate the intake (Focant et al, 2002;Vrijens et al, 2002;De Bont et al, 2004;Baeyens et al, 2007). A detailed intake assessment was performed in the aftermath of the 1999 PCB incident by Vrijens et al (2002).…”

Distribution of polychlorinated biphenyl residues in several tissues of fish from the North End Lake, Port Elizabeth, South Africa

“…In aquatic organisms, most studies have reported on PCBs in the muscles of fish (Baeyens et al, 2007, Kočan et al, 2001. While industries are a key component of the country's economy, little research has been conducted on PCB contamination and no literature is available for PCB analysis in different organs of fish from the North End Lake.…”