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    • 1. 发明申请
    • MEASUREMENT OF PARTICLE CHARGE
    • 颗粒电荷的测量
    • WO2015033090A1
    • 2015-03-12
    • PCT/GB2014/000347
    • 2014-09-03
    • IZON SCIENCE LIMITEDGLOSSOP, Benjamin, Mark
    • GLOSSOP, Benjamin, MarkVOGEL, RobertWEATHERALL, EvaJONES, Martin, David
    • G01N15/12G01N15/00G01R29/24G01N15/10G01N33/487
    • G01N27/44791G01N15/12G01N15/1209G01N15/1218G01N27/4163G01N27/44704G01N2015/0003G01N2015/1075G01R29/24
    • A method of determining a charge of at least one test particle (as herein defined), comprising: applying one of an electric current or a voltage across an aperture connecting two chambers, whereby the chambers are at least partially filled with electrolyte and whereby the at least one test particle is suspended in the electrolyte of at least one of the chambers; measuring a value indicative of the other of the electric current or voltage across the aperture; determining a time interval between a first and a second point in time, the second point in time corresponding to a point in time when the measured current or voltage has reached a specific proportion of the measured current or voltage at the first point in time; and determining the charge of the at least one test particle by: determining a value indicative of an electrical velocity component of a total velocity of at least one calibration particle having a known charge, taking into account that the total velocity of the at least one calibration particle comprises a non¬ zero convective velocity component and the electrical velocity component; determining a value indicative of an electrical velocity component of a total velocity of the at least one test particle, taking into account that the total velocity of the at least one test particle comprises a non-zero convective velocity component and the electrical velocity component; and using the determined values indicative of the electrical velocity components of the test particle and the calibration particle to calibrate the quantitative relationship between the charge of the at least one test particle and the determined time interval.
    • 一种确定至少一个测试颗粒(如本文定义的)的电荷的方法,包括:施加电流或电压中的一个穿过连接两个室的孔,由此所述室至少部分地填充有电解质, 至少一个测试颗粒悬浮在至少一个室的电解质中; 测量表示所述孔径上的另一电流或电压的值; 确定第一和第二时间点之间的时间间隔,所述第二时间点对应于当所测量的电流或电压达到所述第一时间点的测量电流或电压的特定比例的时间点; 以及通过以下步骤确定所述至少一个测试颗粒的电荷:考虑到所述至少一个校准的总速度,确定指示具有已知电荷的至少一个校准颗粒的总速度的电速分量的值 颗粒包括非零对流速度分量和电速分量; 考虑到至少一个测试颗粒的总速度包括非零对流速度分量和电速度分量,确定指示所述至少一个测试颗粒的总速度的电速分量的值; 并且使用所述确定的值来指示所述测试颗粒和所述校准颗粒的电速分量,以校准所述至少一个测试颗粒的电荷与所确定的时间间隔之间的定量关系。