FN Archimer Export Format
PT J
TI A re-examination of matrix effects in the segmented-flow analysis of nutrients in sea and estuarine water
BT 
AF COVERLY, Stephen
   KEROUEL, Roger
   AMINOT, Alain
AS 1:1;2:2;3:2;
FF 1:;2:PDG-ODE-DYNECO-PELAGOS;3:PDG-DOP-DCB-DYNECO-PELAGOS;
C1 SEAL Analyt GmbH, D-22844 Norderstedt, Germany.
   IFREMER, Brest, F-29280 Plouzane, France.
C2 SEAL ANALYT GMBH, GERMANY
   IFREMER, FRANCE
SI BREST
SE PDG-ODE-DYNECO-PELAGOS
   PDG-DOP-DCB-DYNECO-PELAGOS
IN WOS Ifremer jusqu'en 2018
   copubli-europe
IF 4.39
TC 22
UR https://archimer.ifremer.fr/doc/00057/16843/14530.pdf
LA English
DT Article
DE ;Nutrient;Determination;Seawater;Estuarine water;Segmented-flow analysis;Matrix effects
AB Modern instruments together with the use of standard reference materials have improved the accuracy and long-term reproducibility of the analysis of nutrients (ammonium, nitrate, nitrite, phosphate and silicate) in sea water using segmented-flow analysis, so that errors arising from matrix effects become more significant. Colorimetric detectors with bubble-through flowcells have become widely used for seawater analysis in recent years and their associated matrix effects are described. A re-examination of all categories of matrix effects, whose main origin is salinity, was thus undertaken to assess how much they are liable to alter the data. Interferences were classified into four types, each of which was examined in order to show its influence on the measurements. We discuss how matrix effects can be identified, quantified, reduced and corrected. Chemistry and instrument design play a major role in some matrix effects and recommendations are given to minimise these or make them easier to correct. In particular, the correction for chemical salt effects is revisited for the general case and new, simplified procedures are proposed for its computation. A semi-automated procedure is proposed for measuring and correcting sample and refractive index blanks.
PY 2012
PD JAN
SO Analytica Chimica Acta
SN 0003-2670
PU Elsevier Science Bv
VL 712
UT 000300764700011
BP 94
EP 100
DI 10.1016/j.aca.2011.11.008
ID 16843
ER

EF