Paper Info
Title
A Multi-Pumping Flow System for In Situ Measurements of Dissolved Manganese in Aquatic Systems.
Abstract
A METals In Situ analyzer (METIS) has been used to determine dissolved manganese (II) concentrations in the subhalocline waters of the Gotland Deep (central Baltic Sea). High-resolution in situ measurements of total dissolved Mn were obtained in near real-time by spectrophotometry using 1-(2-pyridylazo)-2-naphthol (PAN). PAN is a complexing agent of dissolved Mn and forms a wine-red complex with a maximum absorbance at a wavelength of 562 nm. Results are presented together with ancillary temperature, salinity, and dissolved O-2 data. Lab calibration of the analyzer was performed in a pressure testing tank. A detection limit of 77 nM was obtained. For validation purposes, discrete water samples were taken by using a pump-CTD system. Dissolved Mn in these samples was determined by an independent laboratory based method (inductively coupled plasma-optical emission spectrometry, ICP-OES). Mn measurements from both METIS and ICP-OES analysis were in good agreement. The results showed that the in situ analysis of dissolved Mn is a powerful technique reducing dependencies on heavy and expensive equipment (pump-CTD system, ICP-OES) and is also cost and time effective.
Year
DOI
Venue
2016
10.3390/s16122027
SENSORS
Keywords
Field
DocType
manganese,in situ,multi-pumping flow system,sea water,redoxcline,Baltic Sea
Detection limit,In situ,Analytical chemistry,Spectrophotometry,Absorbance,Chemistry,Seawater,Mass spectrometry,Manganese,Salinity
Journal
Volume
Issue
Citations 
16
12.0
0
PageRank 
References 
Authors
0.34
0
9
Name
Order
Citations
PageRank
David Meyer100.34
Ralf D. Prien200.34
Olaf Dellwig300.34
Joanna J. Waniek400.34
Ingo Schuffenhauer500.34
Jan Donath600.34
Siegfried Krüger700.34
Malte Pallentin800.34
Detlef E. Schulz-Bull900.34