【摘要】 目的调查山西野生连翘主产地安泽县、陵川县、平定县、古县的连翘叶中15种稀土元素的含量水平及15种稀土总量、轻稀土总量、重稀土总量的分布特征。方法采集四县2018年5月、6月、7月产野生连翘叶,样品经高压罐消解后,采用电感耦合等离子体质谱仪检测15种稀土元素的含量,用SPSS23对数据进行分析。结果样品中15种天然稀土元素均检出,铈(Ce)、镧(La)、钕(Nd)、钇(Y)共占稀土总量的84.3%～92.3%,Ce含量最高,铥(Tm)、镥(Lu)含量最低。轻稀土总量占稀土总量的76.1%～86.7%,是重稀土总量的3.2～6.5倍。稀土总量、重稀土总量均存在时间差异性(P<0.05)。稀土总量、轻稀土总量、重稀土总量均存在地区差异性(P<0.05)。结论野生连翘叶中15种稀土总量、轻稀土总量、重稀土总量存在一定的时间差异性和地区差异性。更多还原

【Abstract】 Objective To investigate the content of 15 rare earth elements in the leaves of Forsythia suspensa in the main producing areas of wild Forsythia in Shanxi(Anze county, Lingchuan county, Pingding county and Guxian County), and research the distribution of 15 rare earths, total light rare earths and total rare earths. Methods The wild Forsythia suspensa leaves were collected from these 4 counties of May, June and July of 2018. After the sample was digested by high pressure tank, the contents of 15 rare earth elements was detected by inductively coupled plasma mass spectrometry, and the data was analyzed by SPSS 23. Results All of 15 natural rare earth elements were detected. Ce, La, Nd and Y were accounting for 84.3%～92.3% of the total rare earth elements, of which Ce was the most abundant and Tm and Lu were the lowest. The total amount of light rare earths accounted for 76.1%～86.7% of the total amount of rare earths, which was 3.2～6.5 times of the total amount of heavy rare earths. The total amount of rare earth and heavy rare earth had time difference(P< 0.05). There were regional differences in the total amount of rare earths, the total amount of light rare earths and the total amount of heavy rare earths(P<0.05). Conclusion There are some time differences and regional differences in the total amount of 15 rare earths, the total amount of light rare earths and the total amount of heavy rare earths in wild Forsythia leaves.更多还原