我国市售液态乳中15种元素含量特征分析及风险评估
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(国家食品安全风险评估中心,北京 100021)

作者简介:

马兰 女 副主任技师 研究方向为食品卫生检验 E-mail:malan@cfsa.net.cn

通讯作者:

周爽 女 研究员 研究方向为分析化学 E-mail:zhoush@cfsa.net.cn

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国家重点研发计划项目(2017YFC1600500)


Occurrence and exposure risk assessment of elements in liquid milk in China
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(China National Center for Food Safety Risk Assessment, Beijing 100021, China)

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    摘要:

    目的 通过对我国不同地区市售液态乳中营养元素及有害元素含量测定,分析我国居民通过饮用液态乳对多元素的摄入状况,评估成年消费人群中多元素暴露水平及健康风险,为相关标准制定提供依据。 通过对我国不同地区市售液态乳中营养元素及有害元素含量测定,分析我国居民通过饮用液态乳对多元素的摄入状况,评估成年消费人群中多元素暴露水平及健康风险,为相关标准制定提供依据。方法 采集全国7个地理区域市售液态乳样品共计110份,以微波消解-电感耦合等离子体质谱法测定镁、钙、钒、铬、锰、铁、钴、镍、铜、锌、砷、硒、钼、镉和铅15种元素含量,分析地域性差异。对于营养元素采用推荐摄入量(RNI)和适宜摄入量(AI)评价营养状况,对于污染元素采用暴露边界比(MOE)和暂定每月耐受摄入量(PTMI)评价健康风险。 采集全国7个地理区域市售液态乳样品共计110份,以微波消解-电感耦合等离子体质谱法测定镁、钙、钒、铬、锰、铁、钴、镍、铜、锌、砷、硒、钼、镉和铅15种元素含量,并分析地域性差异。对于营养元素采用推荐摄入量(RNI)和适宜摄入量(AI)评价营养状况,对于污染元素采用暴露边界比(MOE)和每月耐受摄入量(PTMI)评价健康风险。结果 液态乳中钙含量普遍较高(430~939 mg/kg);铁、铬、钴、锰、钒、镍、铅、砷、镉9种元素的含量分布具有一定的地域性差异;液态乳中砷、铅和铬检出值均小于我国限量标准。暴露评估结果显示,营养元素镁、钙、硒、钼的摄入量均大于其RNI的10%;污染元素铅MOE远远大于1,镉PTMI均小于0.1 μg/kg BW,镍MOE远远大于10。 液态乳中钙元素含量普遍较高(430~939 mg/kg);铁、铬、钴、锰、钒、镍、铅、砷、镉9种元素的含量分布具有一定的地域性差异;液态乳中砷、铅和铬检出值均小于我国卫生限量标准,超标率为零。暴露评估结果显示,营养元素镁、钙、硒、钼的摄入量均大于其RNI的10%;污染元素铅MOE远远大于1,镉PTMI均小于0.1 μg/kg BW/m,镍MOE远远大于10。结论 液态乳中富含多种营养元素,可通过日常饮用液态乳获得一定的营养元素补充;液态乳中有害元素污染普遍较低,对人体健康的潜在风险较低。 液态乳中富含多种营养元素,可通过日常饮用液态乳获得一定的营养元素补充;液态乳中有害元素污染普遍较低,对人体健康的潜在风险较低。

    Abstract:

    Objective To analysed nutritious and harmful elements found in liquid milk marketed in different regions across China, analyzed the intake of elements from drinking milk, assessed exposure to elements and health risks in adults, and provided basis for relevant standards. Methods As many as 110 milk samples were collected in seven geographic regions across China. A total of 15 elements, Mg, Ca, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Se, Mo, Cd and Pb, were determined with microwave digestion - inductively coupled plasma mass spectrometry to analyze regional differences. Recommended Nutrient Intake (RNI) and Adequate Intake (AI) were used to assess nutrition status while Margin of Exposure (MOE) and Provisional Tolerable Monthly Intake (PTMI) were used to assess health risks. Results The result showed that milk generally has high level of Ca (430-939 mg/kg). The levels of 9 elements, namely Fe, Cr, Co, Mn, V, Ni, Pb, As and Cd, varied geographically. The measured concentrations of As, Pb and Cr in liquid milk were all lower than the limits of the Chinese standards. According to the result of exposure assessment, the RNIs of Mg, Ca, Se and Mo were higher than 10%. The MOE of Pb was much higher than 1. The PTMI of Cd was lower than 0.1 μg/kg BW/month, and the MOE of Ni was much higher than 10. Conclusion Milk contains abundant nutritious elements and is an important supplementary to human nutrition. In addition, milk generally contains low levels of harmful elements, which poses low risk to human health.

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马兰,赵馨,尚晓虹,赵云峰,周爽.我国市售液态乳中15种元素含量特征分析及风险评估[J].中国食品卫生杂志,2021,33(3):325-331.

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  • 收稿日期:2020-12-09
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  • 在线发布日期: 2021-06-30
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