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Magnesium gluconate is a classical pharmaceutical compound used as a source of magnesium for the prevention and treatment of hypomagnesemia. To the best of our knowledge, a robust and reliable liquid chromatography tandem mass spectrometry technique has not yet been reported for the qualitative and quantitative analysis of magnesium gluconate. This study describes the method development for the LC–ESI–MS/MS analysis of magnesium gluconate using three different reversed-phase HPLC conditions (Method I–III) with comprehensive fragmentation pattern and the structural characterization by NMR spectroscopy. The LC–MS and NMR data were found in accordance with the structure of magnesium gluconate. When magnesium gluconate was dissolved in the acetonitrile and water–methanol solutions, it exists in situ in three different forms: magnesium gluconate itself, gluconic acid, and magnesium gluconate chelate with gluconic acid by a coordinate covalent bond. Method I exhibited pseudo-molecular ion peaks with more magnesium gluconate chelates with gluconic acid, while method II showed an adduct of magnesium gluconate with the solvent along with the molecular ion peak. There was no pseudo-molecular ion peaks found in method III. Thus, method III was found to be the more accurate, robust and reliable LC–MS method for the qualitative and quantitative analysis, structural characterization, and could also be suitable for the pharmacokinetic study of magnesium gluconate. The detailed fragmentation analysis might be useful for the structural characterization of unknown divalent organometallics.

The objective of the current study was to evaluate the effect of biofield energy treatment on the isotopic abundance ratios of PM+1/PM, PM+2/PM, PM+3/PM and PM+4/PM in p-DCB using gas chromatography-mass spectrometry (GC-MS). The p-DCB was divided into two parts - one part was control sample, and another part was considered as the treated sample which was subjected to biofield energy treatment (The Trivedi Effect®). T1, T2, T3, and T4 were referred the biofield treated p-DCB having analyzed at different time intervals. The GC-MS analysis of both the control and biofield treated p-DCB indicated the presence of the parent molecular ion peak at m/z 146 along with four major fragmentation peaks at m/z 111, 75, 55 and 50. The relative peak intensities of the fragmented ions in the biofield treated p-DCB were notably changed as compared to the control sample with respect to the time. The isotopic abundance ratio analysis using GC-MS revealed that the isotopic abundance ratio of PM+1/PM at T1, T2, T3, and T4 (biofield energy treated p-DCB) was significantly increased by 10.87, 83.90, 225.16, and 241.15%, respectively as compared to the control sample. Consequently, the percentage change in the isotopic abundance ratio of PM+2/PM at T1, T2, and T3 (biofield energy treated p-DCB) was enhanced by 4.55, 9.49, and 1.80%, respectively as compared to the control sample. Beside these, another two isotopic molecular ion peaks at m/z 149 and 150 were found in the GS-MS spectra due to arise from the contributions of various combinations of 2H, 13C, and 37Cl. The isotopic abundance ratios of PM+3/PM in biofield energy treated sample at T1, T2, T3, and T4 was significantly increased by 15.14, 82.57, 192.43, and 218.31%, respectively as compared to the control sample. Similarly, the PM+4/PM in biofield energy treated sample at T1, T2, T3, and T4 was significantly increased by 13.80, 86.66, 186.13, and 204.29%, respectively as compared to the control sample. Overall, the isotopic abundance ratios of PM+1/PM (2H/1H or 13C/12C), PM+2/PM (37Cl/35Cl), for PM+3/PM and PM+4/PM (the probable combinations of 2H/1H, 13C/12C, and 37Cl/35Cl) were significantly enhanced in the biofield energy treated p-DCB. The biofield treated p-DCB has shown improved isotopic abundance ratios that might have altered the physicochemical properties, thermal properties and rate of reaction. Biofield treated p-DCB might be useful in pharmaceutical and chemical industries as intermediates during the manufacturing of pharmaceuticals and chemicals by monitoring the rate of chemical reaction. https://www.trivedieffect.com/science/determination-of-isotopic-abundance-ratio-of-biofield-energy-treated-14-dichlorobenzene-using-gas-chromatography-mass-spectrometry-gc-ms http://www.sciencepublishinggroup.com/journal/paperinfo?journalid=121&doi=10.11648/j.mc.20160403.11, Mahendra Kumar Trivedi, Alice Branton, Dahryn Trivedi, Gopal Nayak, Kalyan Kumar Sethi, Snehasis Jana. Determination of Isotopic Abundance Ratio of Biofield Energy Treated 1,4-Dichlorobenzene Using Gas Chromatography-Mass Spectrometry (GC-MS). Modern Chemistry. Vol. 4, No. 3, 2016, pp. 30-37. doi: 10.11648/j.mc.20160403.11