Nitrate sensor based on ultraviolet absorption spectrometry for seawater: design, comparison and application

2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI) Pub Date : 2019-11-01 DOI:10.1109/ICEMI46757.2019.9101688

Yang Pengcheng, Wang Ning, Cheng Changkuo, Du Junlan

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引用次数: 1

Abstract

Nitrate sensor based on ultraviolet absorption spectrometry has been developed for measurement of nitrate in seawater. Compared with the chemical laboratory analyses, no chemical regents are required when ultraviolet absorption spectrometry is applied. It is quicker, simpler and easier to perform in on-line measurement. In response to marine environment, the sensor has been designed with an electrical scraper which is used to automatically clean the optical windows before measurement and effectively reduce the influence of biofouling. The results of the comparison experiment for standard solution show that the nitrate sensor has a good performance in accuracy which the average relative error is lower than 10%, and the correlation of the nitrate sensor with laboratory method for seawater samples is higher than 0.9. The nitrate sensor has now been deployed in Bohai sea floor for long-term on-line monitoring, running stably and acquiring large quantities of nitrate data.

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基于紫外吸收光谱法的海水硝酸盐传感器:设计、比较与应用

研制了一种基于紫外吸收光谱法的硝酸盐传感器，用于海水中硝酸盐的测定。与化学实验室分析相比，紫外吸收光谱法不需要化学试剂。它在在线测量中更快、更简单、更容易。针对海洋环境，该传感器设计了电动刮板，用于在测量前自动清洁光学窗，有效减少生物污垢的影响。标准溶液对比实验结果表明，该传感器具有良好的精度性能，平均相对误差小于10%，对海水样品硝酸盐传感器与实验室方法的相关性大于0.9。硝酸盐传感器目前已部署在渤海海底进行长期在线监测，运行稳定，获取了大量硝酸盐数据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2019 14th IEEE International Conference on Electronic Measurement & Instruments (ICEMI)

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