Using sequential injection analysis for fast determination of phosphate in coastal waters
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In: Talanta, Vol. 70, No. 3, 15.10.2006, p. 513-517.
Research output: Journal contributions › Journal articles › Research › peer-review
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TY - JOUR
T1 - Using sequential injection analysis for fast determination of phosphate in coastal waters
AU - Frank, Carsten
AU - Schroeder, Friedhelm
AU - Ebinghaus, Ralf
AU - Ruck, Wolfgang
N1 - Parallel als Online-Ausg. erschienen unter der Adresse http://dx.doi.org/10.1016/j.talanta.2005.12.055
PY - 2006/10/15
Y1 - 2006/10/15
N2 - A sequential injection analysis system (SIA) is described which is suited for the fast determination of filterable molybdate reactive phosphate (FRP, 0.2 μm) in coastal waters. It processes up to 270 samples per hour with a detection limit (3σ) of 0.05 μM and is used for surface mapping of phosphate in areas with steep concentration gradients like the Wadden Sea. The determination is based on the reaction of phosphate with acidic molybdate to phosphomolybdate, which builds non-fluorescent ion pairs with rhodamine 6G. The remaining rhodamine fluorescence is detected at 550 nm with an excitation at 470 nm. Syringe pump, valve and detector were controlled by a self made python programme, which was optimised for high speed SIA measurements in monitoring applications.
AB - A sequential injection analysis system (SIA) is described which is suited for the fast determination of filterable molybdate reactive phosphate (FRP, 0.2 μm) in coastal waters. It processes up to 270 samples per hour with a detection limit (3σ) of 0.05 μM and is used for surface mapping of phosphate in areas with steep concentration gradients like the Wadden Sea. The determination is based on the reaction of phosphate with acidic molybdate to phosphomolybdate, which builds non-fluorescent ion pairs with rhodamine 6G. The remaining rhodamine fluorescence is detected at 550 nm with an excitation at 470 nm. Syringe pump, valve and detector were controlled by a self made python programme, which was optimised for high speed SIA measurements in monitoring applications.
KW - Chemistry
KW - sequential injection analysis
KW - Phosphate
KW - Molybdate
KW - Rhodamine
UR - http://www.scopus.com/inward/record.url?scp=33645983779&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/5efd2987-0181-37ee-b6cd-58ee12eeac84/
U2 - 10.1016/j.talanta.2005.12.055
DO - 10.1016/j.talanta.2005.12.055
M3 - Journal articles
C2 - 18970800
VL - 70
SP - 513
EP - 517
JO - Talanta
JF - Talanta
SN - 0039-9140
IS - 3
ER -