Determination of nitrate in seawater based on deep ultraviolet spectroscopy and optimized algorithm

Xiao-fan Zhu; Xing-yue Zhu; Juan Su; Chi Wu

doi:10.1117/12.2553248

31 January 2020 Determination of nitrate in seawater based on deep ultraviolet spectroscopy and optimized algorithm

Xiao-fan Zhu, Xing-yue Zhu, Juan Su, Chi Wu

Proceedings Volume 11427, Second Target Recognition and Artificial Intelligence Summit Forum; 114274F (2020) https://doi.org/10.1117/12.2553248
Event: Second Target Recognition and Artificial Intelligence Summit Forum, 2019, Changchun, China

Abstract

In order to achieve high-precision, long-term and in-situ monitoring of nitrate concentration in seawater, a new method based on deep ultraviolet spectroscopy is presented to measure the absorbance of multi-component seawater samples at 200nm-400nm, and the measurement models are established using least square algorithm and kernel partial least square algorithm respectively. It is proved that kernel partial least square algorithm is better and the predicted concentration of nitrate is more accurately by comparing the two models. The research results show that the kernel partial least square algorithm can better extract the nonlinear relationship between the absorbance of different wavelengths and the nitrate concentration hidden in the spectrum of multi-component seawater, with better goodness of fit as well as prediction accuracy.

Citation Download Citation

Xiao-fan Zhu, Xing-yue Zhu, Juan Su, and Chi Wu "Determination of nitrate in seawater based on deep ultraviolet spectroscopy and optimized algorithm", Proc. SPIE 11427, Second Target Recognition and Artificial Intelligence Summit Forum, 114274F (31 January 2020); https://doi.org/10.1117/12.2553248

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available