Cited by 2,485Plant Growth and Agriculture TechniquesEnvironmental and Analytical Chemistry StudiesPhosphorus and nutrient management

Test of an Ascorbic Acid Method for Determining Phosphorus in Water and NaHCO 3 Extracts from Soil

Watanabe, F. S., Olsen, S. R.·1965·Soil Science Society of America Journal

Abstract

Murphy and Riley proposed use of a single reagent for determining P. The method was found to be accurate for determining P in soil extracts. This method is based on reduction of the ammonium molybdiphosphate complex by ascorbic acid in the presence of antimony. The color produced is stable for 24 hours. It is less subject to interfering substances than are methods involving reduction by SnCl 2 .

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Crossref · 10.2136/sssaj1965.03615995002900060025x

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Authors
Watanabe, F. S., & Olsen, S. R.
Affiliations
Agricultural Research Service (US)
Venue
Soil Science Society of America Journal
Publisher
Wiley
Published
1965-11
Volume
29
Issue
6
Pages
677-678
ISSN
  • 0361-5995 (ISSN-L)
  • 1435-0661
OpenAlex
W1990768879
Cited by
2,485
References
0
Citations by year
2026: 87 · 2025: 87 · 2024: 113 · 2023: 120 · 2022: 139 · 2021: 133 · 2020: 126 · 2019: 117 · 2018: 101 · 2017: 74 · 2016: 91 · 2015: 77 · 2014: 80 · 2013: 89 · 2012: 68
FWCI
2.68
Type
journal article
Language
en
Open access
closed
Locations
Soil Science Society of America Journal (publishedVersion)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Plant Growth and Agriculture Techniques
  • Physical Sciences › Environmental Science › Water Science and Technology › Environmental and Analytical Chemistry Studies
  • Physical Sciences › Environmental Science › Waste Management and Disposal › Phosphorus and nutrient management
Keywords
phosphorus determination, ascorbic acid reduction, ammonium molybdophosphate, antimony, soil extracts, aqueous extract, colorimetric assay

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