公开(公告)号：WO2018071664A1

公开(公告)日：2018-04-19

申请号：PCT/US2017/056333

申请日：2017-10-12

Applicant: BENTLEY INSTRUMENTS, INC.

Inventor： PARSONS, Craig ,  LYDER, Henrik

IPC: G01N21/3577 ,  G01N21/27 ,  G01J3/42 ,  G01B11/02 ,  G01J3/02 ,  G01N33/04

Abstract: A transmission spectroscopy device can direct light into a sample, and determine properties of the sample based on how much light emerges from the sample. The device can use a cell to contain the sample, so that the size of the cell defines the optical path length traversed by light in the sample. To ensure accuracy in the measurements, it is beneficial to calibrate the device by measuring the size of the cell periodically or as needed. To measure the size of the cell, the device can perform a transmission spectroscopy measurement of a known substance, such as pure water, to produce a measured absorbance spectrum of the known substance. The device can subtract a known absorbance spectrum of the known substance from the measured absorbance spectrum to form an oscillatory fringe pattern. The device can determine the size of the cell from a period of the fringe pattern.

Abstract translation: 透射光谱学装置可以将光引导到样品中，并且基于从样品中出现多少光来确定样品的性质。 该设备可以使用一个单元来容纳样本，以便单元的大小定义了样本中光线穿过的光程长度。 为了确保测量的准确性，通过周期性地或根据需要测量细胞的大小来校准装置是有益的。 为了测量细胞的大小，该装置可以对已知物质（如纯水）进行透射光谱测量，以产生已知物质的测量吸收光谱。 该装置可以从测量的吸收光谱中减去已知物质的已知吸收光谱以形成振荡条纹图案。 该设备可以根据条纹图案的周期来确定单元的大小。