Improving the nondestructive analysis accuracy of liquids in a flexible container based on the multi-pathlength spectrum method

Xingwei Hou; Gang Li; Shengzhao Zhang; Shaoxiu Song; Han Tian; Xin Feng; Ling Lin

doi:10.1063/1.5052909

Improving the nondestructive analysis accuracy of liquids in a flexible container based on the multi-pathlength spectrum method

Rev Sci Instrum. 2019 May;90(5):056101. doi: 10.1063/1.5052909.

Authors

Xingwei Hou¹, Gang Li¹, Shengzhao Zhang², Shaoxiu Song¹, Han Tian³, Xin Feng¹, Ling Lin¹

Affiliations

¹ State Key Laboratory of Precision Measurement Technology and Instrument and School of Precision Instruments and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China.
² Department of Bio-Medical Engineering, School of Life Science, Anhui Medical University, Hefei 230032, People's Republic of China.
³ Huai An Vocational College of Information Technology, Huai'an 223003, People's Republic of China and Nuclear Engineering, Seoul National University, Seoul 151-744, South Korea.

PMID: 31153283
DOI: 10.1063/1.5052909

Abstract

In order to achieve nondestructive analysis of liquid samples, the spectral analysis of solution in a flexible container is proposed in this paper. However, the difference in the flexible containers reduces the accuracy of the spectral analysis. By analyzing the relationship between the condition number of coefficient matrix (CNCM) and the solution accuracy, a method of reducing CNCM by multi-pathlength spectrum is proposed to reduce the error caused by the differences in flexible containers. To verify the feasibility of the method, different concentrations of samples were prepared with intralipids and India-ink, and polyvinyl chloride sample tubes were used as the flexible container. The experimental results show that the proposed strategy can effectively reduce the error caused by the differences in flexible containers.