Polycyclic aromatic hydrocarbons in animal-based foods from Shanghai: bioaccessibility and dietary exposure

Abstract

A total of 175 samples of 18 types of food were collected from markets in Shanghai, China, and the concentrations and bioaccessibility of 15 priority-controlled polycyclic aromatic hydrocarbons (PAHs) in these samples were determined. The mean concentrations of PAHs varied between 2.4 and 47.1 ng g(-1) wet weight, with the highest being observed in snail and lowest in chicken. The concentrations were lower than the maximum levels of PAH allowed for food per EU regulations. Among the PAHs measured, phenanthrene was the predominant one. Most of the PAHs originated from pyrogenic sources, analysed using molecular indices. The mean bioaccessibility of PAHs varied from 29.0% to 61.2% as measured by simulating the human gastrointestinal digestion process. Linear relationships between the bioaccessibility and lipid contents were observed for most PAH congeners. The daily intake of PAHs by an average Shanghai resident was 848 ng day(-1) and decreased to 297 ng day(-1) when the bioaccessibility of PAHs were considered, demonstrating that most intake might have been overestimated. According to the potency equivalent concentrations and screening values of PAHs, consumption of snail and clam, especially snail, should be limited.

In-situ partitioning and bioconcentration of polycyclic aromatic hydrocarbons among water, suspended particulate matter, and fish in the Dongjiang and Pearl Rivers and the Pearl River Estuary, China

“…This result was comparable to previous investigations, which found that tissue residues of organic chlorine pesticide in fish did not correlate with lipid levels (Fisher, 1995). Yu et al (2012) also found that in most of investigated seawater fish samples, lipid was not correlated with the concentrations of PAHs. The observation in Fig.…”

Seafood consumption among Chinese coastal residents and health risk assessment of heavy metals in seafood

“…5 g/day obtained from the survey conducted by Wang et al (Wang et al 2005). The most four consumed seafood species by Xiamen residents are fish (16.1 (2.14, 42.9) g/day), mollusk (12.9 (3.21, 34.3) g/day), alga (9.29 (2.14, 19.3) g/day), and crustacean (4.29 (1.34, 12.0) g/day), which is lower than fish (40.8 g/day) in Shanghai (Yu et al 2012) and fish (71.43-107. 14 g/day) in Lake Phewa, Nepal (Thapa et al 2014).…”

Nutrients and contaminants in tissues of five fish species obtained from Shanghai markets: Risk–benefit evaluation from human health perspectives

“…In that study, fish sold in five large Chinese cities were analyzed, and the contaminant concentrations were found generally to be lower in farmed fish than in wild fish. The concentrations of a number of pollutants in different animal-based foods from Shanghai have also been determined in a number of studies (Yu et al, 2011(Yu et al, , 2012bLei et al, 2013), but the health risks posed to Shanghai residents by contaminants in foods containing fish products have been evaluated in only one study (Lei et al, 2015). In that study, the estimated total daily intake of contaminants in aquatic products (fish and shellfish) was found to be much higher than the estimated total daily contaminant intake in livestock and poultry products (Lei et al, 2015).…”