The application of algal growth potential tests (AGP) to the canals and lakes of western Netherlands

Klapwijk, S. P.; Bolier, G.; Does, J. van der

doi:10.1007/bf00027785

Cited by 13 publications

(4 citation statements)

References 11 publications

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“…Algal growth potential (AGP) tests have been applied in limnology since the 1960s (Klapwijk et al 1989). Algal assay procedures to determine AGP were used to study the environmental requirements of plankton.…”

Section: Date Of Submissionmentioning

confidence: 99%

ASM Sci. J., Vol. 4, No. 1, 2010

Liki

2010

ASMScJ

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Figure on the right is the High Voltage Engineering Europe 2.0 MV Medium CurrentPlus TandetronTM accelerator providing 2.5 MeV protons which is situated in SurreyIon Beam Centre. It is taken from Figure 1(a) of the article Ion Beam ElementalAnalysis of Doped SiO2 Optical Fibre and Its Thermoluminescence Response WhenIrradiated with Proton—research work undertaken by scientists from the Universityof Technology Malaysia and the University of Surrey, Guildford, U.K. (pp. 15–21).Figure on the top left of the cover shows skeletons of simulated flood from anarticle which describes characterization of skeletons of simulated droughts and floodof water bodies (Figure 5, pp. 68). Subsequent designs shown below are from Figures6 and 4 of the first research article of this issue—Ex-vivo Differentiation of Stem Cellsfrom Human Extracted Deciduous Teeth into Bone Forming Cells which describesthe isolation of mesenchymal stem cells derived from extracted deciduous teeth anddifferentiate them into osteoblast and identifies the molecular characterization of thedifferentiated cells by using reverse transcriptase PCR (RT-PCR) analysis.

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Section: Date Of Submissionmentioning

confidence: 99%

ASM Sci. J., Vol. 4, No. 1, 2010

Liki

2010

ASMScJ

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“…Recent reports have suggested biological and chemical methods to measure PBAP, but these methods are time-consuming. Among biological methods, algal growth potential (AGP) is the most direct method used for estimating the bioavailability of P in samples (Miller et al 1980 ; Raschke and Schultz 1987 ; Klapwijk et al 1989 ; Okubo et al 2012 ). The AGP test requires a 14-day incubation; thus, it is not suitable for quantifying BAP in a large number of samples (Schultz et al 1994 ).…”

Section: Introductionmentioning

confidence: 99%

Developing a method to measure bioavailable phosphorus in river water via simultaneous multisample ultrasonic extraction

Ling,

Phong,

Yokota

et al. 2024

Environ Sci Pollut Res

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To reduce aquatic eutrophication, measurements of bioavailable phosphorus (BAP) rather than total phosphorus (TP) are deemed critical. However, current methods require much time to separate sediments from river water, which limits the routine measurement of BAP in rivers. Therefore, in this study, a simultaneous multisample ultrasonic extraction method is proposed to directly measure total BAP (TBAP) in river water without the separation of sediment and water. Spike-and-recovery assessments showed that at least three extractions are required to maintain efficiency. A process including 2-min extraction time and three extractions was suggested. The concentrations of TBAP extracted by this process showed no significant differences with the spike calculations. Furthermore, river water TBAP was quantified using the conventional and proposed method to examine the practicality of using the proposed method for simultaneous multisample ultrasonic extraction and to evaluate its adaptability to actual river water analysis. The extracted concentrations matched those obtained using the conventional method, in which total BAP is calculated as the sum of dissolved BAP and particulate BAP; no significant difference was observed between the concentrations. Ultrasonic extraction was considerably less time-consuming than the conventional method because more samples could be analyzed during a single run. Therefore, the simultaneous multisample ultrasonic extraction method proposed in this study can be used to directly quantify total BAP in river water.

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“…Among biological methods, algal growth potential (AGP) is the most direct method used for estimating the bioavailability of P in samples (Klapwijk et al 1989;Miller et al 1980;Okubo et al 2012;Raschke and Schultz 1987). The AGP test requires a 14-day incubation; thus, it is not suitable for quantifying BAP in a large number of samples (Schultz et al 1994).…”

Section: Introductionmentioning

confidence: 99%

Developing a Method to Measure Bioavailable Phosphorus in River Water via Simultaneous Multisample Ultrasonic Extraction

Ling,

Phong,

Yokota

et al. 2023

Preprint

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To reduce watershed eutrophication, measurements of bioavailable phosphorus (BAP) rather than total phosphorus (TP) are deemed critical. However, standard methods for direct and routine BAP measurement in river water have not been widely investigated. Therefore, in this study, a simultaneous multisample ultrasonic extraction method is proposed to measure total BAP (TBAP) in river water. Spike-and-recovery assessments showed that at least three repeated extractions are required to maintain accuracy. Results showed that sample P concentrations obtained using a 2-min extraction time and three extractions were consistent with theoretical values. Furthermore, the TBAP extraction results from custom samples containing different P sediment concentrations obtained under these conditions showed no significant differences between experimental and theoretical concentrations. Additionally, river water TBAP was quantified using the conventional and proposed method to examine the practicality of using the proposed method for simultaneous multisample ultrasonic extraction and to evaluate its adaptability to actual river water analysis. The extracted concentrations matched those obtained using the conventional method, in which total BAP is calculated as the sum of dissolved BAP and particulate BAP; no significant difference was observed between the concentrations. Ultrasonic extraction was considerably less time-consuming than the conventional method because more samples could be analyzed during a single run. Therefore, the simultaneous multisample ultrasonic extraction method proposed in this study can be used to directly quantify total BAP in river water.

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The application of algal growth potential tests (AGP) to the canals and lakes of western Netherlands

Cited by 13 publications

References 11 publications

ASM Sci. J., Vol. 4, No. 1, 2010

ASM Sci. J., Vol. 4, No. 1, 2010

Developing a method to measure bioavailable phosphorus in river water via simultaneous multisample ultrasonic extraction

Developing a Method to Measure Bioavailable Phosphorus in River Water via Simultaneous Multisample Ultrasonic Extraction

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