油菜花粉和茶花花粉中重金属含量的分布特征研究

Distribution of heavy metals in the species of Brassica campestris L. bee pollen and Camellia japonica L. bee pollen

中文关键词:  蜂花粉  电感耦合等离子体质谱法  重金属  环境污染物

英文关键词:bee pollen  inductively coupled plasma mass spectrometry  heavy metals  environmental pollutants

中文摘要:

      目的 考察油菜花粉和茶花花粉中7种重金属(类金属)元素含量的分布特征。方法 采用微波消解-电感耦合等离子体质谱法对所采集的蜂花粉样品中铬、锰、砷、铜、镍、镉和铅7种元素含量进行分析测定, 通过统计分析考察油菜花粉和茶花花粉中各元素含量是否有显著性差异。结果 油菜花粉和茶花花粉均存在重金属污染问题, 但重金属污染水平存在差异。锰、镍、铜3种元素在所采集的油菜花粉样品和茶花花粉样品中的含量差异具有显著统计意义(P<0.05); 铬、砷、镉和铅4种元素含量在油菜花粉和茶花花粉中差异不显著(P>0.05)。结论 对于具有较高重金属污染风险的花粉种类应加强监管, 将样品来源地环境无机污染物引起的重金属污染问题纳入到生产规范标准制订修订的考量之中。

英文摘要:

      Objective To investigate the distribution features of 7 kinds of heavy metals (metalloid) in the species of Brassica campestris L. bee pollen and Camellia japonica L. bee pollens. Methods The content of 7 kinds of elements (chromium, manganese, arsenic, copper, nickel, cadmium and lead) in bee pollen samples was determined by microwave digestion-inductively coupled plasma mass spectrometry (ICP-MS). The statistical analysis was conducted to investigate whether there was significant difference in the content of each element between the species of Brassica campestris L. bee pollen and Camellia japonica L. bee pollen. Results The pollution of heavy metals was found in both species of bee pollens, but the pollution levels of heavy metals were different. There were significant differences in the content of Mn, Ni and Cu in the species of Brassica campestris L. bee pollen samples and Camellia japonica L. bee pollen samples (P<0.05), while there was no significant difference in the content of chromium, arsenic, cadmium and lead between the 2 species of bee pollens (P>0.05). Conclusion The supervision of bee pollens with high risk of heavy metal pollution should be strengthened, and the heavy metal pollution caused by inorganic pollutants in the environment of the place of origin should be taken into consideration in the formulation and revision of production specification standards.