Related Experiment Video
Updated: Jun 28, 2026
VacuSIP, an Improved InEx Method for In Situ Measurement of Particulate and Dissolved Compounds Processed by Active Suspension Feeders
Published on: August 3, 2016
Determination of nutrients in seawater by segmented-flow analysis with higher analysis rate and reduced interference
M Jodo1, K Kawamoto, M Tochimoto
1Tokyo Kyuei 6906-10 Tsurugamaru Shiba Kawaguchi Saitama-ken Japan.
Abstract:
A microbore continuous-flow analyser was used to determine ammonia, nitrite, nitrate and phosphate in seawater. Ninety samples per hour were measured by optimizing the hydraulic conditions and using a cadmium coil for nitrate reduction. The analysis range was extended and the detection limit was reduced by using two analytical ranges with automatic range-changing. Interference from magnesium on ammonia was investigated and reduced by using a different complexing agent. The results correlated well with a Japanese reference method.
