An optimized method for extraction and purification of inorganic phosphate from plant material for oxygen isotope ratio analysis
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An optimized method for extraction and purification of inorganic phosphate from plant material for oxygen isotope ratio analysis. / Rieckmann, Maria Monrad; Blake, Ruth Elaine; Chang, Sae Jung; Laursen, Kristian Holst.
I: MethodsX, Bind 12, 102541, 2024.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - An optimized method for extraction and purification of inorganic phosphate from plant material for oxygen isotope ratio analysis
AU - Rieckmann, Maria Monrad
AU - Blake, Ruth Elaine
AU - Chang, Sae Jung
AU - Laursen, Kristian Holst
N1 - Publisher Copyright: © 2024 The Authors
PY - 2024
Y1 - 2024
N2 - Compound-specific stable isotope ratio analysis of oxygen isotopes in inorganic phosphate can be used to study biological phosphorus cycling and the transformation processes controlling the fate of phosphorus. However, methods for extraction of inorganic phosphate from plant tissue for oxygen isotope ratio analysis are not consistent. Further, the purification into solid silver phosphate can be challenging and laborious. In this work, a detailed and optimized method to provide a more consistent, easily implementable and reproducible extraction using trichloroacetic acid and subsequent purification of inorganic phosphate from plant material for oxygen isotope ratio analysis is presented. Key focus points were: uniform extraction of inorganic phosphate from barley leaves, removal of dissolved organic material, flexibility in regards to the amount of inorganic phosphate extracted for the purification into silver phosphate, reduced use of chemicals and, removal of co-precipitated oxygen-bearing compounds before analysis. Most notable optimizations to the method and associated effects were: • Drying of plant material before inorganic phosphate extraction increases the method applicability to a broader range of plant sample types. • Removal of dissolved organic matter improves inorganic phosphate purification. • Sample volume adjustment according to inorganic phosphate content is vital for effective and quantitative precipitations.
AB - Compound-specific stable isotope ratio analysis of oxygen isotopes in inorganic phosphate can be used to study biological phosphorus cycling and the transformation processes controlling the fate of phosphorus. However, methods for extraction of inorganic phosphate from plant tissue for oxygen isotope ratio analysis are not consistent. Further, the purification into solid silver phosphate can be challenging and laborious. In this work, a detailed and optimized method to provide a more consistent, easily implementable and reproducible extraction using trichloroacetic acid and subsequent purification of inorganic phosphate from plant material for oxygen isotope ratio analysis is presented. Key focus points were: uniform extraction of inorganic phosphate from barley leaves, removal of dissolved organic material, flexibility in regards to the amount of inorganic phosphate extracted for the purification into silver phosphate, reduced use of chemicals and, removal of co-precipitated oxygen-bearing compounds before analysis. Most notable optimizations to the method and associated effects were: • Drying of plant material before inorganic phosphate extraction increases the method applicability to a broader range of plant sample types. • Removal of dissolved organic matter improves inorganic phosphate purification. • Sample volume adjustment according to inorganic phosphate content is vital for effective and quantitative precipitations.
KW - Compound-specific
KW - Oxygen
KW - Phosphate
KW - Phosphorus
KW - Plants
KW - Stable isotopes
U2 - 10.1016/j.mex.2023.102541
DO - 10.1016/j.mex.2023.102541
M3 - Journal article
C2 - 38287963
AN - SCOPUS:85182385353
VL - 12
JO - MethodsX
JF - MethodsX
SN - 2215-0161
M1 - 102541
ER -
ID: 381886543