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
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
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
建立简便、可靠、灵敏的同位素稀释质谱法测定血浆中奥氮平的浓度。50μL血浆样品中加入稳定同位素(奥氮平-D3)为内标,经特丁基甲醚提取后进样分析。色谱柱为XBridge Shield RP 18(100mm×2.1mm,3.5μm,Waters)。乙腈-缓冲液(氨水-...建立简便、可靠、灵敏的同位素稀释质谱法测定血浆中奥氮平的浓度。50μL血浆样品中加入稳定同位素(奥氮平-D3)为内标,经特丁基甲醚提取后进样分析。色谱柱为XBridge Shield RP 18(100mm×2.1mm,3.5μm,Waters)。乙腈-缓冲液(氨水-醋酸铵,pH8)为流动相,等度洗脱,流速0.4mL·min-1。扫描方式为正离子多离子反应监测(MRM)。定量下限均为0.1ng·mL-1,线性范围为0.1~30ng·mL-1。对特异性、线性、准确度、精密度、回收率、介质效应均进行了方法学考察,且各项结果均符合要求,可以用于奥氮平的生物等效性研究。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.
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.
文摘建立简便、可靠、灵敏的同位素稀释质谱法测定血浆中奥氮平的浓度。50μL血浆样品中加入稳定同位素(奥氮平-D3)为内标,经特丁基甲醚提取后进样分析。色谱柱为XBridge Shield RP 18(100mm×2.1mm,3.5μm,Waters)。乙腈-缓冲液(氨水-醋酸铵,pH8)为流动相,等度洗脱,流速0.4mL·min-1。扫描方式为正离子多离子反应监测(MRM)。定量下限均为0.1ng·mL-1,线性范围为0.1~30ng·mL-1。对特异性、线性、准确度、精密度、回收率、介质效应均进行了方法学考察,且各项结果均符合要求,可以用于奥氮平的生物等效性研究。