福州市主栽蔬菜品种对砷的积累及健康风险

为阐明福州市主要蔬菜基地种植的蔬菜中砷积累特征与食用风险水平，对研究区域内蔬菜和对应土壤中砷含量进行了分析检测，采用Monte-Carlo 模型法对蔬菜中砷引起的健康风险进行了评价，并探讨了蔬菜和土壤砷含量之间的相关性及不同品种、不同类别蔬菜之间积累砷的差异。结果表明：研究区内菜地土壤没有明显的砷超标，砷含量均未超出国家土壤二级标准（30 mg·kg-1）；研究区内蔬菜安全状态很好，不存在明显的健康风险；蔬菜中砷与其对应土壤中砷之间无显著相关性；不同类别的蔬菜之间对于砷的累积存在差异性，蔬菜中砷的富集系数顺序为叶菜类 > 根茎类 > 瓜果类，其中茼蒿的富集系数最大，豌豆和辣椒的最小。

Arsenic accumulation and health risks to human health in major vegetable cultivars of Fuzhou

In order to clarify the accumulation characteristics and risk levels of arsenic (As) in vegetables planted in the main vegetable base of Fuzhou, the As contents of vegetables and soils from the study area were analyzed. Health risk assessment associated with As was conducted using the Monte Carlo model. Analysis was carried out to determine if there was a correlation between the As contents of vegetables and soils, and the differences between As accumulation in vegetables with different cultivars were studied. The results showed that the soils in the study area had no obvious accumulation of As, and the As contents were not beyond the Grade II criteria of the national soil environmental quality standard (30 mg·kg-1). The results of the Monte Carlo model testified that vegetables in the study area were safe to eat and would not cause obvious health risks to local residents. There was no significant correlation between the As contents of the vegetables and those of the soils, however As accumulation in different vegetable cultivars was dissimilar. The order of As bioaccumulation in the different vegetable types was leafy vegetables > roots > fruits, among which crown daisy had the highest bioaccumulation, while peas and peppers had the lowest.