Feasibility investigation on deep ocean compact autonomous Raman spectrometer developed for in-situ detection of acid radical ions

Zengfeng Du; Ying Li; Jing Chen; Jinjia Guo; Rong’er Zheng

doi:10.1007/s00343-015-4096-8

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Feasibility investigation on deep ocean compact autonomous Raman spectrometer developed for in-situ detection of acid radical ions

OriginalPaper | Updated：2023-05-16

- Feasibility investigation on deep ocean compact autonomous Raman spectrometer developed for in-situ detection of acid radical ions
- Feasibility investigation on deep ocean compact autonomous Raman spectrometer developed for in-situ detection of acid radical ions
- 海洋湖沼学报（英文） 2015年33卷第2期页码：545-550
- Affiliations：
  
  Optics and Optoelectronics Laboratory Ocean University of China
- Author bio：
- Funds：
  
  Supported by the National High Technology Research and Development Program of China (863 Program) (Nos. 2006AA09Z243, 2012AA09A405)
- DOI：10.1007/s00343-015-4096-8
  中图分类号：
- 网络首发：2014-12-10，
  
  纸质出版：2015
- Accepted：
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Feasibility investigation on deep ocean compact autonomous Raman spectrometer developed for in-situ detection of acid radical ions[J]. 海洋湖沼学报（英文）, 2015,33(2):545-550.

Du, Z., Li, Y., Chen, J. et al. Feasibility investigation on deep ocean compact autonomous Raman spectrometer developed for in-situ detection of acid radical ions., Chin. J. Ocean. Limnol. 33, 545–550 (2015). https://doi.org/10.1007/s00343-015-4096-8
Feasibility investigation on deep ocean compact autonomous Raman spectrometer developed for in-situ detection of acid radical ions[J]. 海洋湖沼学报（英文）, 2015,33(2):545-550. DOI： 10.1007/s00343-015-4096-8.

Du, Z., Li, Y., Chen, J. et al. Feasibility investigation on deep ocean compact autonomous Raman spectrometer developed for in-situ detection of acid radical ions., Chin. J. Ocean. Limnol. 33, 545–550 (2015). https://doi.org/10.1007/s00343-015-4096-8 DOI：

摘要

Abstract

A newly developed Deep Ocean Compact Autonomous Raman Spectrometer (DOCARS) system is introduced and used for in-situ detection of acid radical ions in this paper. To evaluate the feasibility and capability of DOCARS for quantitative analysis of the acid radical ions in the deep ocean

extensive investigations have been carried out both in laboratory and sea trials during the development phase. In the laboratory investigations

Raman spectra of the prepared samples (acid radical ions solutions) were obtained

and analyzed using the method of internal standard normalization in data processing. The Raman signal of acid radical ions was normalized by that of water molecules. The calibration curve showed that the normalized Raman signal intensity of SO 4 2−

NO 3 −

and HCO 2 − increases linearly as the concentration rises with correlation coefficient R 2 of 0.99

0.99

and 0.98 respectively. The linear function obtained from the calibration curve was then used for the analysis of the spectra data acquired in the sea trial under a simulating chemical field in the deep-sea environment. It was found that the detected concentration of NO 3 − according to the linear function can reflect the concentration changes of NO 3 − after the sample was released

and the detection accuracy of the DOCARS system for SO 4 2− is 8%. All the results showed that the DOCARS system has great potential in quantitative detection of acid radical ions under the deep-sea environment

while the sensitivity of the DOCARS system is expected to be improved.

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references

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