Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7690042 | TrAC Trends in Analytical Chemistry | 2014 | 22 Pages |
Abstract
Ammonia is an important nutrient in coastal and oceanic waters due to its role in the aquatic nitrogen cycle. However, the presence of the analyte at trace concentrations (nanomolar) and the high salinity of the water make its analysis a real challenge. Historically, flow-based methodologies, such as segmented flow analysis, and, more recently, flow-injection analysis and sequential injection analysis, have been used to assist with this difficult task. This review explains the importance of the analysis of ammonia in estuarine and marine water samples and the challenges facing the analytical chemist. We describe the flow-based methodologies that have been developed for this particular application. We discuss detection and on-line sample-pretreatment strategies employed to improve the limit of detection and to reduce and eliminate interferences, and illustrate them with examples of field applications.
Keywords
LFAIndophenol blueMSFIAMCFIAMPFSSIAABASFAHLBMSAOPAAOADICFIAEstuarine waterSeawaterMarine waterAmmoniaEDTAethylene diamine tetraacetic acidSolid-phase extraction (SPE)Gas diffusionammonia oxidizing ArchaeaAnaerobic ammonium oxidationFlow-injection analysisFlow analysisMulti-syringe flow-injection analysishydrophilic-lipophilic balanceLOD یا Limit of detectionMulti-pumping flow systemMethane sulfonic acidlimit of detectionIon chromatography
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
Lenka O'Connor Šraj, M. Inês G.S. Almeida, Stephen E. Swearer, Spas D. Kolev, Ian D. McKelvie,