摘要:
2009年1~2月，在广东省韶关、清远等11个地区采集了65个家庭室内飞尘样品，分析了其DBDPE和BDE209的残留状况，评估了室内飞尘所含十溴联苯醚（BDE209）及其替代物十溴二苯乙烷（DBDPE）对人体的暴露风险. 结果表明，DBDPE和BDE209在所有样品中均可检出，其范围分别为30.9~16 370、5.44~955ng/g，均值分别为3 020 、167 ng/g；采样家庭室内飞尘BDE209的含量处于较低水平，而DBDPE却处在较高水平；DBDPE残留量可能已超过BDE209. 成人和儿童通过室内飞尘摄入的DBDPE平均日暴露量分别为0.72、14.5 ng/（kg?day），而BDE209则分别为0.80、0.040 ng/（kg?day），儿童DBDPE和BDE209的最高日暴露量分别达58.0、3.21 ng/（kg?day），显示儿童处于相对较高的DBDPE和BDE209暴露风险.
Abstract:
Decabromodiphenyl ether (BDE209) and its substituted product, decabromophenyl ethane (DBDPE) were measured in domestic indoor dust collected from eleven cities in Guangdong Province, including Shaoguan, Qingyuan, Heyuan and so on , to assess human exposure to BDE209 and DBDPE via indoor dust. DBDPE and BDE209 were detected in all samples, and the concentrations of DBDPE and BDE209 in indoor dust were 30.9-163,70 and 5.44-955ng/g, with an mean value of 3020 and 167 ng/g, respectively. Compared with correlated results from domestic and international studies , the DBE209 level in the present study was at the low end, while DBDPE was at the high end; the ratios of DBPDE/BDE209 were between 1.70 to 194 , indicating that DBDPE residue in Guangdong indoor dust has already surpassed that of BDE209. Average daily estimated intake of DBDPE via indoor dust was 0.72 ng/kg?day for adults and 14.5 ng/kg?day for young children, and the corresponding value for BDE209 was 0.040 ng/kg?day in adults and 0.80 ng/kg?day in children; the maximum daily estimated intake of DBDPE and BDE209 for children was 58.0 and 3.21 ng/kg?day, about 20 fold of that for adults. The results suggested that DBDPE and BDE209 may pose higher health risk to children than adults via contaminations in indoor dust.
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