The paper was described that the rice was digested by HNO3-HCIO4.A lot of organic materials were removed. Strong base type anion exchange resin (T910#) were used to separate a large number of K. Na. Ca. Mg and other m...The paper was described that the rice was digested by HNO3-HCIO4.A lot of organic materials were removed. Strong base type anion exchange resin (T910#) were used to separate a large number of K. Na. Ca. Mg and other metal ions in the rice. Then, the trace Cd was determined by IDMS. the results were perfectly satisfaction.展开更多
Isotopic dilution mass spectrometry has the characteristics of absolute measurement. The quantitative separation of the elements during the preparing sample does not need; The method of IDMS has the high sensitivity a...Isotopic dilution mass spectrometry has the characteristics of absolute measurement. The quantitative separation of the elements during the preparing sample does not need; The method of IDMS has the high sensitivity and the high accuracy; The dynamic scope of the measurement is more wide and the determining values could be traced to SI unit.展开更多
This paper describes the method and way for traceability of chemical metrology. The efficieflt primary reference materials were prepared and the reliable analysis method -IDMS was established for transmitting quantity...This paper describes the method and way for traceability of chemical metrology. The efficieflt primary reference materials were prepared and the reliable analysis method -IDMS was established for transmitting quantity and traceability of chemical metrology, to introduce the results of international cooperation study.展开更多
文摘The paper was described that the rice was digested by HNO3-HCIO4.A lot of organic materials were removed. Strong base type anion exchange resin (T910#) were used to separate a large number of K. Na. Ca. Mg and other metal ions in the rice. Then, the trace Cd was determined by IDMS. the results were perfectly satisfaction.
文摘Isotopic dilution mass spectrometry has the characteristics of absolute measurement. The quantitative separation of the elements during the preparing sample does not need; The method of IDMS has the high sensitivity and the high accuracy; The dynamic scope of the measurement is more wide and the determining values could be traced to SI unit.
文摘This paper describes the method and way for traceability of chemical metrology. The efficieflt primary reference materials were prepared and the reliable analysis method -IDMS was established for transmitting quantity and traceability of chemical metrology, to introduce the results of international cooperation study.
