Determination of total phosphorus in waters with amperometric detection by coupling of flow-injection analysis with continuous microwave oven digestion

Hinkamp, S.; Schwedt, Georg

doi:10.1016/s0003-2670(00)83332-2

Cited by 56 publications

(15 citation statements)

References 13 publications

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“…Most of the processes can be automated; i.e., they can also be employed as FIA systems (Table 21). Furthermore, special problems such as determination of the total nitrogen or total phosphorus concentration in wastewater samples can also be solved by using the FIA technique [77,78]. In these processes, digestion of all nitrogen compounds (oxidation under UV radiation with peroxidisulfate) to nitrate or of organic phosphorus compounds to orthophosphate (by acid and microwave radiation) is integrated into the flow system.…”

Section: Anion Analysismentioning

confidence: 99%

Water, 1. Properties, Analysis and Hydrological Cycle

Weingärtner¹,

Franck²,

Wiegand³

et al. 2011

Ullmann's Encyclopedia of Industrial Chemistry

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The article contains sections titled: 1. Water as a Solvent 1.1. Properties of Pure Water 1.1.1. Molecular Properties 1.1.2. Hydrogen Bonding and Water Structure 1.1.3. Bulk Properties of Liquid Water 1.2. Aqueous Solutions 1.2.1. General Solvent Properties 1.2.2. Solutions of Simple Nonpolar Gases 1.2.3. Solutes with Hydrophilic Groups 1.2.4. Electrolyte Solutions 2. Water at High Pressure and Temperature 2.1. Properties of Ice 2.1.1. Thermodynamic Properties 2.1.2. Transport Properties 2.1.3. Electrolytic Properties 2.1.4. Mechanical Properties 2.2. Properties of Fluid Water 2.2.1. Thermodynamic Properties 2.2.2. Transport Properties 2.2.3. Electrolytic Properties 2.2.4. Other Physical Properties 2.3. Properties of Water Vapor 2.4. Water in the Supercritical State 3. Water Analysis 3.1. Sampling and Sample Preservation 3.2. Physicochemical and Sum Parameters 3.3. Inorganic Analysis 3.3.1. Determination of Cations 3.3.2. Anion Analysis 3.3.3. Determination of Dissolved Gases 3.3.4. Quick Test Processes 3.4. Organic Analysis 3.4.1. Spectrometric Methods 3.4.2. Gas and Liquid Chromatography 3.5. Biochemical Methods 4. Hydrological Cycle and Water Use 4.1. World Water Balance 4.2. Hydrological Cycle 4.3. Demand for Water 4.4. Source of Water Used 4.5. Water Treatment 5. Acknowledgement

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Section: Anion Analysismentioning

confidence: 99%

Water, 1. Properties, Analysis and Hydrological Cycle

Weingärtner¹,

Franck²,

Wiegand³

et al. 2011

Ullmann's Encyclopedia of Industrial Chemistry

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“…The concentration of phosphate in environmental water usually ranges from ten to several tens ng mL −1 [2]. Several alternative methods have also been developed for measuring low concentration of phosphate in a matrix, including ion exchange chromatography [3,4], gas chromatography with the phosphine generation system [5,6], amperometric detection [7], fluorometry [8,9] and enzymatic reaction [10,11], molybdenum blue methods [12] and flow injection [13].…”

Section: Introductionmentioning

confidence: 99%

Preconcentration of phosphate ion onto ion-imprinted polymer

Özkütük

Ersöz

Deni̇zli̇

et al. 2008

Journal of Hazardous Materials

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“…These attempts included different flow techniques, as well as digestion and reaction conditions. Some methods have been developed for flow analysis of TDP in various mediums: soil leachate and runoff waters by Peat et al (1997), wastewaters by Aoyagi et al (1988), Hinkamp and Schwedt (1990) and Williams et al (1993). These methods generally use drastic digestion conditions and their limits of detection are inappropriate for unpolluted natural waters, especially seawater.…”

Section: Introductionmentioning

confidence: 99%

An automated photo-oxidation method for the determination of dissolved organic phosphorus in marine and fresh water

Aminot

Kérouel

2001

Marine Chemistry

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A segmented flow automated method with on-line photo-oxidation for the determination of dissolved organic phosphorus+soluble reactive phosphorus (DOP+SRP) in seawater and fresh water is described here. A low-power lamp was used for a compact, easy-to-handle and low-ozone-producing manifold. The influence of seawater matrix components was studied in detail using natural seawater and salt solutions spiked with DOP model compounds. Bromide was found to be the most inhibitory species in seawater. The work shows that most salt solutions referred to as artificial seawater are not satisfactory model matrices to test the actual seawater matrix effect. Since DOP recovered in undiluted seawater samples was about half that obtained in fresh water samples, the described method includes a 5-to 6-fold dilution of seawater samples. This simple procedure overcomes matrix effects and provides satisfactory DOP recovery. No pH effect was found in the 6-9 range corresponding to most natural waters. The standard deviation was 0.007 μmol l −1 and the limit of detection 0.02 μmol l −1 . Linearity was tested up to 5 μmol l −1 of DOP, i.e. far above naturally occurring values. A throughput of 20 samples per hour is easily achieved. ABSTRACTA segmented flow automated method with on-line photo-oxidation for the determination of dissolved organic phosphorus + soluble reactive phosphorus (DOP + SRP) in seawater and fresh water is described here. A low-power lamp was used for a compact, easy-to-handle and low-ozone-producing manifold. The influence of seawater matrix components was studied in detail using natural seawater and salt solutions spiked with DOP model compounds. Bromide was found to be the most inhibitory species in seawater. The work shows that most salt solutions referred to as artificial seawater are not satisfactory model matrices to test the actual seawater matrix effect. Since DOP recovered in undiluted seawater samples was about half that obtained in fresh water samples, the described method includes a 5 to 6-fold dilution of seawater samples. This simple procedure overcomes matrix effects and provides satisfactory DOP recovery. No pH effect was found in the 6-9 range corresponding to most natural waters. The standard deviation was 0.007 µmol l -1 and the limit of detection 0.02 µmol l -1 . Linearity was tested up to 5 µmol l -1 of DOP, i.e. far above naturally occurring values. A throughput of 20 samples per hour is easily achieved.

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Determination of total phosphorus in waters with amperometric detection by coupling of flow-injection analysis with continuous microwave oven digestion

Cited by 56 publications

References 13 publications

Water, 1. Properties, Analysis and Hydrological Cycle

Water, 1. Properties, Analysis and Hydrological Cycle

Preconcentration of phosphate ion onto ion-imprinted polymer

An automated photo-oxidation method for the determination of dissolved organic phosphorus in marine and fresh water

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