中文摘要：

本研究于2009年至2013年在全国20个省份按照中国总膳食研究方法采集食物样品160份,用高分辨气相色谱-高分辨质谱（HRGC-HRMS）结合同位素稀释技术测定8类食物中7种多溴联苯醚（PBDEs）组分含量,通过膳食消费量计算各省普通居民的PBDEs膳食摄入量和3种组分的暴露边界值（MOEs）.7种PBDEs在所有食物类别中都有检出.含量平均值最高的食物为蛋类（316 pg·g^（-1）fw（fresh weight））、水产（169 pg·g^（-1）fw）和肉类（97.1 pg·g^（-1）fw）.摄入量最高的地区为上海（1.88 ng·kg^（-1）bw·d^（-1））、福建（1.63 ng·kg^（-1）bw·d^（-1））和辽宁（1.55 ng·kg^（-1）bw·d^（-1））.与2007年比,膳食中PBDEs含量和摄入量总体呈下降趋势,不会造成健康风险;但个别食物以及上海、福建、辽宁趋于严重的污染状况值得重点关注和持续监测.

英文摘要：

Samples of selected food groups were collected from 20 provinces in China. Concentrations for 7 congeners of polybrominated diphenyl ethers（ PBDEs） were measured using high-resolution gas chromatography-high resolution mass spectrometry（ HRGC-HRMS） and isotope dilution methodology. The dietary intakes of nonoccupationally exposed population were calculated by combining the levels of PBDEs in foods with the local food consumption data. The margins of exposure（ MOE） approach recommended by European Food Safety Authority（ EFSA） was applied to assess health risk of PBDEs intake. The highest mean values were found in eggs（ 316 pg·g~（-1）fw（ fresh weight））,aquatic foods（ 169 pg·g~（-1）fw） and meats（ 97. 1 pg·g~（-1）fw）. Dietary intake of Shanghai（ 1.88 ng·kg~（-1）bw·d~（-1））,Fujian（ 1.63 ng·kg~（-1）bw·d~（-1））,and Liaoning（ 1.55 ng·kg~（-1）bw·d~（-1））were at upper level in this study. Concentrations and dietary intake of PBDEs in China decreased from 2007 to 2013 for most foods and regions,indicating the estimated dietary exposure was unlikely to be a significant health concern. Further studies are important for monitoring the foods with relatively high concentration of PBDEs.