Abstract：
To explore the distribution characteristics of paddy soil and rice AS content, as well as the health risks of rice consumption, and to evaluate the safe planting ability of rice, 209 paddy soil samples and 1 567 groups of paddy soil-rice samples were collected, their As content and basic soil physical and chemical properties were determined, and the single-factor pollution index method was used to evaluate the pollution degree of the samples. The results showed that:① the soil of paddy fields in Guizhou Province was mainly neutral, and its fertilizer retention capacity and organic matter content were above the medium level, and the soil was relatively fertile. The range of ω(As) in paddy soil was 0.042-91.75 mg·kg-1, the geometric mean was 10.03 mg·kg-1, and the cumulative effect of paddy soil As was lower than that of natural soil As (P<0.05) by independent sample T. Compared with the screening value (0.2 mg·kg-1) of the Soil Pollution Risk Management and Control Standard for Agricultural Land (GB 15618-2018), the excess rate of soil samples was 15.37%. ② The ω (As) range of rice grain samples was 0.001-0.937 mg·kg-1, the geometric average value was 0.108 mg·kg-1, 10.21% of the rice grain samples exceeded the limit value of \"Limit of Contaminants in Food (trial)\" (GB 2762-2022), and the locations where the exceedances are mainly found are in the central and northern parts of Qiannan Prefecture, as well as around industrial and mining activity zones in the southern counties and districts of Zunyi. ③ As ingested through rice posed non-carcinogenic risk and carcinogenic risk for adults and children, and the impact on children was greater than that of adults. There is no strict control area for safe rice planting in Guizhou Province, and rice can be safely planted.
摘要：
探究水稻土和水稻AS含量的分布特征,以及大米消费的健康风险，并评估水稻的安全种植能力，收集了209个水稻土样和1567组水稻土样，测定了它们的砷含量和土壤基本理化性质，采用单因子污染指数法对样品的污染程度进行评价。结果表明:①贵州省稻田土壤以中性为主,其肥料保留能力和有机质含量均高于中等水平，土壤相对肥沃。水稻土中ω（As）的范围为0.042-91.75mg·kg-1，几何平均值为10.03mg·kg-1，水稻土As的累积效应低于天然土壤As（P<0.05）通过独立样本T与《农业用地土壤污染风险管理与控制标准》（GB15618-2018）的筛选值（0.2mg·kg-1）相比，土壤样品的过量率为15.37%。②米粒样品的ω(As)范围为0.001-0.937mg·kg-1,几何平均值为0.108mg·kg-1,10.21%的米粒样品超过了《食品污染物限量(试验)》(GB2762-2022)的限值,主要发现超标的地点在黔南州的中部和北部，以及遵义南部县区的工矿活动区周边。③通过大米摄入对成人和儿童构成非致癌风险和致癌风险，对儿童的影响大于对成年人的影响。贵州省没有严格的安全水稻种植控制区,水稻可以安全种植。
