Simultaneous multiple injection in monosegmented flow analysis
Simultaneous multiple injection in monosegmented flow analysis
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DOI：
10.1016/s0003-2670(98)00321-3
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发表时间：
1998-10-05
影响因子：
6.2
通讯作者：
Raimundo, IM
中科院分区：
文献类型：
--
作者：
Brito, VO;Raimundo, IM
介绍了一种用于单段流动分析（MSFA）的同时多重进样（SMI）流动法。在这种方法中，样品和试剂（或其他溶液，例如稀释流体）被同时注入单段流动分析仪的反应线圈中。单片段在被携带至检测器时被均质化。样品稀释程序不是基于梯度浓度模式，通过使用流体动力学采样获得了高达150的稀释因子。将该系统应用于血浆葡萄糖测定中的样品稀释。结果表明，与UNICAMP临床医院获得的结果有很好的相关性。将SMI方法应用于天然水中亚硝酸盐的测定，其采样频率为72 h（-1），相对标准偏差
A flow approach for simultaneous multiple injection (SMI) in monosegmented flow analysis (MSFA) is described. In this approach, the sample and the reagent (or other solution, such as a diluting fluid) are simultaneously injected into the reaction coil of a monosegmented flow analyser. The monosegment is homogenised while it is carried towards the detector. The sample dilution procedure is not based on a gradient concentration pattern and dilution factors up to 150 were obtained by using hydrodynamic sampling. The system was applied to perform sample dilution in the determination of glucose in blood plasma. The results showed good correlation with those obtained by the Clinical Hospital of UNICAMP. The SMI approach was also applied to add reagent to the sample in nitrite determination in natural water, providing a methodology that has a sampling frequency of 72 h(-1), a relative standard deviation of