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稻米中多氯联苯及多溴联苯醚残留及风险评估
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Analysis of polychlorinated biphenyls and polybrominated biphenyl ethers in rice and their risk assessment
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    摘要:

    通过分析稻米样品中指示型多氯联苯(PCBs)和12种代表性多溴联苯醚(PBDEs)的存留状况及含量水平,通过膳食风险评估,阐明PCBs和PBDEs在稻米中的安全风险。稻米样品粉碎后,采用直接提取法–酸性硅胶净化法对样品进行前处理,通过气相色谱–串联质谱法对其中7种指示型PCBs和12种代表性PBDEs进行同时检测。45个稻米样品中,PCBs的检出率为42%,合计含量水平在0~78 pg/g干重之间,稻米中PCBs主要检出单体为PCB-28和PCB-52,特征符合我国多氯联苯的生产历史情况;仅在一个样品中检出PBDEs,合计含量为41 pg/g干重。稻米中的PCBs和PBDEs污染水平低,经过风险评估,其未造成稻米的食品安全风险。

    Abstract:

    The risk of polychlorinated biphenyls (PCBs) and polybrominated biphenyl ethers (PBDEs) in 45 rice samples was assessed. The rice samples were collected and ground, and all ground samples were treated according to the direct extraction-acidic silica purification pretreatment method. The analysis of 7 indicator of PCBs and 12 representative of PBDEs was performed with gas chromatography-tandem mass spectrometric method. In these 45 rice samples, PCBs was detectable in 42% samples and the total amount was between 0~78 pg/g dw. The main congeners of PCBs in rice were PCB-28 and PCB-52, which was accordance with the production profile of PCBs in China. PBDEs were detected only in one of the 45 samples with a concentration of 41 pg/g dry weight. The concentrations of PCBs and PBDEs in rice was low and they had no risk to human health as well.

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张 炜,杨永坛*.稻米中多氯联苯及多溴联苯醚残留及风险评估[J].粮油食品科技,2023,31(1):135-142.

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  • 在线发布日期: 2023-01-29
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