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1 November 2023 Quantitative analysis and calibration of temperature-related deviations in the seawater total nitrogen analyzer
Yue Zeng, Yan Liu, Qian Shi, Ran Ma, Xuan Cao, Shuwei Zhang, Zhaoyu Wang, Haikuan Ma, Ning Wu, Yang Wang
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Proceedings Volume 12917, International Conference on Precision Instruments and Optical Engineering (PIOE 2023); 1291717 (2023) https://doi.org/10.1117/12.3011109
Event: 3rd International Conference on Precision Instruments and Optical Engineering (PIOE 2023), 2023, Shanghai, China
Abstract
The impact of environmental factors on water quality analysis has always been an important topic in scientific research. Among these factors, temperature is considered one of the key factors that may influence the determination of total nitrogen levels. This study focuses on seawater as the research object and aims to reduce the influence of temperature variations in marine environments on the measurements of an in-situ total nitrogen analyzer. Different environmental water temperatures were collected for the total nitrogen analyzer's measurement data using standard samples. The collected data was then processed using curve plots and regression analysis to establish a linear regression model for thein-situ total nitrogen analyzer. The experiment revealed that as the temperature increases, the absorbance values measured by the total nitrogen analyzer show a decreasing trend, which may lead to underestimated total nitrogen measurements. The results indicate that high temperatures can affect the stability of reagents and the chemical reactions inside the analyzer, thus affecting the measurement results. Based on these findings, a temperature correction model was introduced in this study. This study introduced a temperature correction model. The optimized method effectively reduced the impact of temperature on in-situ total nitrogen analyzer determination, thereby enhancing the accuracy and stability of measurements.
(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Yue Zeng, Yan Liu, Qian Shi, Ran Ma, Xuan Cao, Shuwei Zhang, Zhaoyu Wang, Haikuan Ma, Ning Wu, and Yang Wang "Quantitative analysis and calibration of temperature-related deviations in the seawater total nitrogen analyzer", Proc. SPIE 12917, International Conference on Precision Instruments and Optical Engineering (PIOE 2023), 1291717 (1 November 2023); https://doi.org/10.1117/12.3011109
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KEYWORDS
Nitrogen
Temperature metrology
Absorbance
Analytical research
Linear regression
Equipment
Water
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