目的通过对乌鲁木齐市调味品和茶叶中总α和总β放射性的调查,掌握本地调味品和茶叶的总α和总β放射性基线资料。方法采集本地产或者原料为新疆的调味品和茶叶,进行称重、碳化和灰化,参照生活饮用水总放射性的比较测量法,采用MPC 9604.低本底α、β测量仪,测定调味品和茶叶中总α和总β放射性水平。结果 11种调味品中总α放射性范围为2.2~182.7 Bq/kg,总β放射性范围为6.4~689.0 Bq/kg,4种茶叶中总α放射性范围为29.8~199.8 Bq/kg,总β放射性范围为568.7~885.9 Bq/kg。结论通过调查初步掌握了乌鲁木齐市各族人民普遍食用的调味品和茶叶中的天然放射性本底资料,积累了基线数据。白砂糖的天然放射性高于其他省市,需要进一步扩大样本量,完善基线值。 Objective To investigate the total α and total β radioactive baseline data of condiments and tea from the investigation of total α and total β radioactivity in condiments and tea in Urumqi. Methods The condiments and tea with local or raw materials were collected from Xinjiang and weighed, carbonized and ashed, with reference to MPC 9604. Low background α, β measuring instrument for measuring condiments And total alpha and total beta radioactivity in tea. Results The results showed that the total α radioactivity ranged from 2.2 to 182.7 Bq / kg, the total β radioactivity ranged from 6.4 to 689.0 Bq / kg, the total α radioactivity ranged from 29.8 to 199.8 Bq / kg, and the total β radioactivity range 568.7 ~ 885.9 Bq / kg. Conclusion Based on the preliminary investigation, natural radioactive background information in condiments and tea commonly used by people of all nationalities in Urumqi was mastered, and baseline data were accumulated. Natural radioactive sugar than other provinces and cities, need to further expand the sample size, improve the baseline value.