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Sampling, sample treatment and quality assurance issues for the determination of phosphorus species in natural waters and soils |
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| Authors: | Worsfold Paul J Gimbert Laura J Mankasingh Utra Omaka Omaka Ndukaku Hanrahan Grady Gardolinski Paulo C F C Haygarth Philip M Turner Benjamin L Keith-Roach Miranda J McKelvie Ian D |
| Affiliation: | a School of Earth, Ocean and Environmental Sciences, University of Plymouth, Drake Circus, Plymouth, PL48AA, UK b Department of Chemistry and Biochemistry, 5151 State University Drive, California State University, Los Angeles, CA 90032, USA c Rua Joao Alencar Guimaraes, 54 Curitiba-PR, 80310-420, Brazil d Institute of Grassland and Environmental Research, North Wyke, Okehampton, Devon, EX202SP, UK e Soil and Water Science Department, University of Florida, Gainesville, FL 32611, USA f Water Studies Centre, School of Chemistry, PO Box 23, Monash University, Victoria 3000, Australia |
| Abstract: | Phosphorus is an important macronutrient and the accurate determination of phosphorus species in environmental matrices such as natural waters and soils is essential for understanding the biogeochemical cycling of the element, studying its role in ecosystem health and monitoring compliance with legislation. This paper provides a critical review of sample collection, storage and treatment procedures for the determination of phosphorus species in environmental matrices. Issues such as phosphorus speciation, the molybdenum blue method, digestion procedures for organic phosphorus species, choice of model compounds for analytical studies, quality assurance and the availability of environmental CRMs for phosphate are also discussed in detail. |
| Keywords: | Phosphorus Natural waters Soils Sampling Sample treatment Sample digestion Quality assurance |
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