Abstract
The design, construction and performance of a remotely deployed submersible flow injection-based nutrient (total oxidized nitrogen) sensor are described. The sensor featured a custom-built microcomputer and a solid-state, flow-through spectrophotometric detector, and the derivatization chemistry was based on in-line coppercadmium reduction of nitrate to nitrite, and diazotization with N1NED and sulphanilamide. The limit of detection was 0.0014 mg l-1 NO3-N and the linear range was 0.0014- 0.77 mg l-1 with a 260 μl sample volume and a 20 mm path length flow cell. Results from submersed deployments in the Tamar estuary and North Sea are also reported.
DOI
10.1155/s1463924699000012
Publication Date
1999-01-01
Publication Title
Journal of Automated Methods and Management in Chemistry
Volume
21
Issue
1
Publisher
Hindawi Limited
ISSN
1464-5068
Embargo Period
2024-11-25
First Page
1
Last Page
9
Recommended Citation
David, A., McCormack, T., & Worsfold, P. (1999) 'A submersible battery-powered flow injection (FI) sensor for the determination of nitrate in estuarine and coastal waters', Journal of Automated Methods and Management in Chemistry, 21(1), pp. 1-9. Hindawi Limited: Available at: https://doi.org/10.1155/s1463924699000012
