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. 2000 Jun;66(6):2548–2554. doi: 10.1128/aem.66.6.2548-2554.2000

TABLE 4.

Proportions of the components in the O1s XPS peak for phosphate salts (G. Vereecke, personal communication) and for glucose-6-phosphate (20) and proportions of the expected types of oxygen

Compound Proportion (%)
Determined by XPS
Expected
532.4–532.9 eV 530.9–531.5 eV P—OH, P—O—C, C—OH P=O, P—O−, C=O
KH2PO4 40 60 50 50
CaHPO4 27 73 25 75
FePO4 15 85 0 100
Glucose-6-phosphate 76 24 78 22