Application of HPLC and CZE to the analysis of polyoxometalates

Investigation of Intermediates Involved in the Photochemical Formation of Mo‐Blue Nanoring by Capillary Electrophoresis–Mass Spectrometry

“…Lower-nuclearity polyoxometalates have been characterized by ESI-and CSI-MS. [9][10][11][12][13][14][15][16][17][18][19][20][21] Because the response factor for ionization differs among each species and because ionization may be prevented by coexisting different species, [7,22] it is necessary to separate the species in the reaction solution in advance. We employed capillary electrophoresis (CE) [23,24] for ESI-MS analysis of the solution of polyoxometalates instead of chromatographic separation [25][26][27] to avoid their irreversibly strong adsorption on packing materials. This CE procedure is quite compatible with ESI-MS, and CE-MS has been successfully applied to many biological/pharmaceutical systems.…”

Polyoxoniobates and Polyoxotantalates as Ligands—Revisited

“…It is rarely used in the chemistry of POMs [71,72]. The possibilities opened up by the use of CE for POMs mixtures were studied in a few cases [73]. Although in these works CE revealed itself as a promising analytical tool, its potential for POM chemistry is far from being fully exploited.…”

A study of complex phosphovanadomolybdates [PV x Mo12−x O40]−(3+x) by reversed-phase HPLC and capillary zone electrophoresis

“…One of the first successful examples of using normal phase HPLC for the separation of heteropolycom pounds was described in [19]. Afterwards ion pair reversed phase HPLC (IP RP HPLC) became the most widespread method for the analysis of mixtures, a successful application of which to model mixtures was described in [20,21]. Within the period from 1980 to the present time, only one work was published, in which a study of model mixtures of POM of various nature by CZE was described [21].…”

“…Afterwards ion pair reversed phase HPLC (IP RP HPLC) became the most widespread method for the analysis of mixtures, a successful application of which to model mixtures was described in [20,21]. Within the period from 1980 to the present time, only one work was published, in which a study of model mixtures of POM of various nature by CZE was described [21]. It should be noted that the CZE data strongly differ from the IP RP HPLC data obtained in the study of similar systems [21].…”

“…Within the period from 1980 to the present time, only one work was published, in which a study of model mixtures of POM of various nature by CZE was described [21]. It should be noted that the CZE data strongly differ from the IP RP HPLC data obtained in the study of similar systems [21]. Few examples of using capillary electrophoresis in the chemistry of polyoxoanions, as a rule, were associated with the determination of trace elements as heteropolyoxoanions (molybdates or tungstates) absorbing in the UV region [21][22][23][24].…”