A Simple, Low-Cost Double Beam Spectrophotometer for Colorimetric Detection of Nitrite in Seawater
Gong, Weidong, Mowlem, Matt, Kraft, Michael and Morgan, Hywel (2009) A Simple, Low-Cost Double Beam Spectrophotometer for Colorimetric Detection of Nitrite in Seawater. IEEE Sensors Journal, 9, (7), 862-869. (doi:10.1109/JSEN.2009.2020659).
Download
Full text not available from this repository.
Description/Abstract
This paper reports on the optical detection system of a prototype nitrite sensor for seawater analysis. The sensor uses a colorimetric Griess reaction that produces an Azo dye with an absorption peak at 540 nm. A simple low-cost double beam spectrophotometer using a green light emitting diode (LED) light source, two integrated photo detectors and lock-in detection is described. A log-ratio amplifier is used to produce an output proportional to absorbance. The optical devices were mounted in a cast resin block to prevent shock and vibration. Experimental results show the detection system has a limit of detection of 0.1 muM.
| Item Type: | Article |
|---|---|
| ISBNs: | 9781424421251 (hardback) |
| ISSNs: | 1530-437X (print) |
| Related URLs: | |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering G Geography. Anthropology. Recreation > GC Oceanography |
| Divisions: | University Structure - Pre August 2011 > School of Electronics and Computer Science University Structure - Pre August 2011 > National Oceanography Centre (NERC) |
| Item ID: | 71835 |
| Date Deposited: | 04 Jan 2010 |
| Last Modified: | 01 Jun 2011 12:37 |
| Contributors: | Gong, Weidong (Author) Mowlem, Matt (Author) Kraft, Michael (Author) Morgan, Hywel (Author) |
| Date: | July 2009 |
| Status: | Published |
| URI: | http://eprints.soton.ac.uk/id/eprint/71835 |
Actions (login required)
 |
View Item |
