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Volume 6 Issue 2
Apr.  2015
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Article Navigation >  Journal of Tropical Biology  > 2015  >  6(2): 197-203

CHEN Bao, PU Hongjun, JIANG Donghua, LUO Zhenggang. Uncertainty Evaluation of Rare Earth Elements in Pu’er Tea by ICP-MS after Microwave Assisted Digestion[J]. Journal of Tropical Biology, 2015, 6(2): 197-203. doi: 10.15886/j.cnki.rdswxb.2015.02.015
Citation: CHEN Bao, PU Hongjun, JIANG Donghua, LUO Zhenggang. Uncertainty Evaluation of Rare Earth Elements in Pu’er Tea by ICP-MS after Microwave Assisted Digestion[J]. Journal of Tropical Biology, 2015, 6(2): 197-203. doi: 10.15886/j.cnki.rdswxb.2015.02.015
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Uncertainty Evaluation of Rare Earth Elements in Pu’er Tea by ICP-MS after Microwave Assisted Digestion

doi: 10.15886/j.cnki.rdswxb.2015.02.015

  • National Center for Pu'er Tea Product Quality Supervision and Inspection, Pu'er 665000, China

  • Received Date: 2014-11-28
  • Samples of Pu’er tea were digested by using a microwave digester and its rare earth elements were determined by ICP-MS. Uncertainty components such as sample weighing,digestion,constant volume,preparation of standard solutions,curve fitting and measurement repeatability were analyzed,and they were combined according to JJF 1059. 1-2012（ Evaluation and Expression of Uncertainty in Measurement）. The sample weighing and constant volume were found to have no obvious effect on the determination while the other factors such as preparation of standard solution,standard curve fitting,repeatability testing and sample digestion had higher effect on the determination and should be controlled strictly for improving the accuracy and objectivity of the determination of rare earth elements.
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Uncertainty Evaluation of Rare Earth Elements in Pu’er Tea by ICP-MS after Microwave Assisted Digestion

doi: 10.15886/j.cnki.rdswxb.2015.02.015
  • National Center for Pu'er Tea Product Quality Supervision and Inspection, Pu'er 665000, China
  • Received Date: 2014-11-28

Abstract: Samples of Pu’er tea were digested by using a microwave digester and its rare earth elements were determined by ICP-MS. Uncertainty components such as sample weighing,digestion,constant volume,preparation of standard solutions,curve fitting and measurement repeatability were analyzed,and they were combined according to JJF 1059. 1-2012（ Evaluation and Expression of Uncertainty in Measurement）. The sample weighing and constant volume were found to have no obvious effect on the determination while the other factors such as preparation of standard solution,standard curve fitting,repeatability testing and sample digestion had higher effect on the determination and should be controlled strictly for improving the accuracy and objectivity of the determination of rare earth elements.

CHEN Bao, PU Hongjun, JIANG Donghua, LUO Zhenggang. Uncertainty Evaluation of Rare Earth Elements in Pu’er Tea by ICP-MS after Microwave Assisted Digestion[J]. Journal of Tropical Biology, 2015, 6(2): 197-203. doi: 10.15886/j.cnki.rdswxb.2015.02.015
Citation: CHEN Bao, PU Hongjun, JIANG Donghua, LUO Zhenggang. Uncertainty Evaluation of Rare Earth Elements in Pu’er Tea by ICP-MS after Microwave Assisted Digestion[J]. Journal of Tropical Biology, 2015, 6(2): 197-203. doi: 10.15886/j.cnki.rdswxb.2015.02.015
shu

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