Oxygen Isotope Analysis of Nanomole Phosphate Using PO3– Fragment in ESI-Orbitrap-MS
Zhenfei Wang,
Shohei Hattori,
Yongbo Peng
et al.
Abstract:The oxygen isotope composition of phosphate is a useful
tool for
studying biogeochemical phosphorus cycling. However, the current Ag3PO4 method is not only tedious in PO4
3– extraction and purification but also requires
a large-sized sample at the micromole level, thereby limiting its
application. Here, we present an approach to measuring the oxygen
isotope composition, δ18O, of dissolved phosphate
at the nanomole level using electrospray ionization Orbitrap mass
spectrometry (ESI-Orbitrap-MS). We compared the… Show more
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