Levels of PCDD/Fs and DL-PCBs in selected foods and estimated dietary intake for the local residents of Luqiao and Yuhang in Zhejiang, China

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• 作者：Yang  ; Song^a ;   ; ^{sygp_0@163.com} ; Nanxiang  ; Wu^a ;   ; ^{wunanxiang@hotmail.com} ; Jianlong  ; Han^b ; Haitao  ; Shen^b ; Yufeng  ; Tan^a ; Gangqiang  ; Ding^b ; Juxiang  ; Xiang^c ; He  ; Tao^a ; Shunliang  ; Jin^c
• 关键词：Polychlorinated dibenzo-p-dioxins/furans ; Dioxin-like polychlorinated biphenyls ; Foods ; e-Waste ; Zhejiang
• 刊名：Chemosphere
• 出版年：2011
• 出版时间：October 2011
• 年：2011
• 卷：85
• 期：3
• 页码：329-334
• 全文大小：510 K

文摘

Polychlorinated dibenzo-p-dioxins/furans (PCDD/Fs) and dioxin-like polychlorinated biphenyls (DL-PCBs) were measured by high resolution gas chromatograph/high resolution mass spectrometer (HRGC/HRMS) in six food groups from Luqiao (LQ) where the e-waste has been recycled and from Yuhang (YH) where the agriculture dominates in Zhejiang Province in China. The total WHO-TEQ values of PCDD/Fs and DL-PCBs in selected foods from LQ were significantly much higher than those from YH. The highest level of the total WHO-TEQ was in crucian carp (10.87 pg g^? w.w.) followed by duck (3.77 pg g^? w.w.), hen eggs (2.80 pg g^? w.w.), chicken (2.43 pg g^? w.w.), rice (0.08 pg g^? w.w.) and vegetables (0.022 pg g^? w.w.) in LQ. By contrast, the highest levels were measured in duck (0.74 pg g^? w.w.) followed by hen eggs (0.69 pg g^? w.w.), crucian carp (0.55 pg g^? w.w.), chicken (0.44 pg g^? w.w.), vegetables (0.002 pg g^? w.w.) and rice (0.0002 pg g^? w.w.) in YH, respectively. The monthly intake of PCDD/Fs and DL-PCBs for the local residents was 401.75 pg WHO-TEQ g^? w.w. in LQ, which is above the provisional tolerable monthly intake (PTMI) set by the Joint FAO/WHO Expert Committee on Food Additives (JECFA). We determined a monthly intake of 37.13 pg WHO-TEQ g^? w.w. in YH, which is below the PTMI. Crucian carp was the predominant contributor to the estimated monthly intake (EMI), accounting for 67.74 % and 36.51 % in LQ and YH, respectively. High levels of PCDD/Fs and DL-PCBs in selected foods indicate severe contamination of these pollutants in the e-waste recycling site.