Voltammetric determination of dissolved iron and its speciation in freshwater

Nagai, Takashi; Imai, Akio; Matsushige, Kazuo; Yokoi, Kunihiko; Fukushima, Takehiko

doi:10.1007/s10201-004-0121-x

Cited by 42 publications

(40 citation statements)

References 35 publications

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“…Details of the UV irradiation system have been described previously (Yokoi et al 1999). DOM in water from Lake Kasumigaura was completely digested by UV irradiation within 60 min under these conditions (Nagai et al 2004). Na 2 · EDTA · 2H 2 O was then added to the UV-digested samples (final conc.…”

Section: Methodsmentioning

confidence: 99%

“…The concentration of total dissolved iron (TDFe) was determined by CSV, as described in Nagai et al (2004). Filtrate samples for analysis of TDFe were acidified to pH 2.5 and UV irradiated for 60 min to decompose the DOM.…”

Section: Methodsmentioning

confidence: 99%

“…Imai et al (1999) reported that the ambient level of fulvic acid in Lake Kasumigaura significantly inhibited the growth of Microcystis aeruginosa in artificial growth media because of complexation of Fe(III) with fulvic acid. Furthermore, Nagai et al (2004) determined the speciation of dissolved iron in Lake Kasumigaura by cathodic stripping voltammetry (CSV) and showed that > 99.9% of the dissolved iron is present as organic species. These studies suggest that the iron limitation in Lake Kasumigaura is caused by the low availability of iron.…”

Section: Introductionmentioning

confidence: 99%

“…However, Imai et al (1999) used artificial culture media, not natural water samples, and investigated the effect of iron on the growth of only one species (Microcystis aeruginosa). In the study by Nagai et al (2004), the relationship between iron speciation in lake water and its biological response was not investigated. In order to understand natural aquatic ecosystems, it is therefore necessary to connect iron speciation in natural water samples to its effect on the algal growth.…”

Section: Introductionmentioning

confidence: 99%

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Effect of iron complexation with dissolved organic matter on the growth of cyanobacteria in a eutrophic lake

Nagai¹,

Imai²,

Matsushige³

et al. 2006

Aquat. Microb. Ecol.

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Dissolved organic matter (DOM) in lake water can have a harmful effect on algal growth through either direct toxicity or iron limitation induced by its complexation with iron. We assessed the effect of iron complexation with DOM on algal growth in the eutrophic Lake Kasumigaura, Japan, using 2 species of cyanobacteria, Microcystis aeruginosa and Planktothrix agardhii, by combining the algal growth potential (AGP) test and pretreatment of DOM decomposition by UV irradiation. We also determined which nutrient limited the growth of the 2 species in the lake water using the AGP test: iron limited the growth of the 2 species, as did nitrogen and phosphorus in Lake Kasumigaura. Moreover, the growth of the 2 species was inhibited by iron complexation with DOM. This is consistent with our results regarding iron speciation in Lake Kasumigaura by cathodic stripping voltammetry: most (> 99.9%) of the dissolved iron was present as organic species in the lake water. Furthermore, data from our AGP test suggest that iron requirement or iron availability between the 2 species are different. This difference in growth characteristics between algal species would be an important determinant of the dominance of specific algal species.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of iron complexation with dissolved organic matter on the growth of cyanobacteria in a eutrophic lake

Nagai¹,

Imai²,

Matsushige³

et al. 2006

Aquat. Microb. Ecol.

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“…At present some of the most commonly used methods include spectrophotometry, [3][4][5] chemiluminescence, 6,7 fluorescence analysis, 8 polarographic and voltammetric analysis, 9,10 flow-injection analysis, 6,[11][12][13] atomic emission and atomic absorption spectrometries [14][15][16] and others. 17,18 Various kinetic methods based on the catalytic action of iron on the oxidation of organic compounds have been reported in several reviews [19][20][21] and original papers.…”

Section: Introductionmentioning

confidence: 99%

Spectrophotometric Determination of Trace Iron by Using Its Catalytic Effect on the N-Phenylanthranilic Acid-Potassium Periodate Reaction

Stoyanova

2008

ANAL. SCI.

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The analytical features of the reaction between N-phenylanthranilic acid (PAA) and potassium periodate in acidic medium are explored with the aim of improving the catalytic kinetic determination of iron in water samples. In the presence of Fe(II, III), PAA is oxidized by potassium periodate in a formic acid medium to form a violet-colored compound. The reaction is followed spectrophotometrically by measuring the increase in the absorbance of the oxidation product at 525 nm. The variables that affected the reaction rate were investigated and the reaction conditions were established. Calibration graphs are linear in the range of concentrations 2 -500 ng mL -1 . As low as 10 -8 mol L -1 Fe(II, III) can be easily determined by the fixed time method. The established catalytic method was successfully applied to the determination of iron in tap water and in pharmaceutical samples.

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Determination of Iron: Electrochemical Methods

Lu¹,

Rees²,

Kabakaev³

et al. 2012

Electroanalysis

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Iron is an abundant element in the environment which plays an important role in environmental and biological systems. In particular, its essential function in photosynthesis has been seen as a limiting factor for phytoplanktons in ocean waters. Thus, sensitive speciation and determination of iron is of major interest, and many techniques have been established for analytical purposes. Electrochemical methods have been commonly explored due to their inexpensive, simple and rapid nature, with adsorptive stripping voltammetry (AdSV) being widely used due to its ability to complex and preconcentrate iron ions for ultrasensitive detection. This paper aims to present a review of recent determinations of trace iron using electrochemical methods.

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Voltammetric determination of dissolved iron and its speciation in freshwater

Cited by 42 publications

References 35 publications

Effect of iron complexation with dissolved organic matter on the growth of cyanobacteria in a eutrophic lake

Effect of iron complexation with dissolved organic matter on the growth of cyanobacteria in a eutrophic lake

Spectrophotometric Determination of Trace Iron by Using Its Catalytic Effect on the N-Phenylanthranilic Acid-Potassium Periodate Reaction

Determination of Iron: Electrochemical Methods

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