Accurate Determination of Trace Molybdenum in Drinking Water by Isotope Dilution Inductively Coupled Plasma Mass Spectrometry

Song, Pengcheng; Wang, Jun; Ji, Chao; Wang, Qian; Wu, Bing

doi:10.2116/analsci.19n010

Cited by 4 publications

(2 citation statements)

References 15 publications

(14 reference statements)

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“…[7][8][9][10] Compared with other techniques for characterization of analytes, MS has significant advantages in speed, sensitivity and specificity. [11][12][13][14][15][16] Electrospray ionization (ESI) is one of the soft ionization techniques for MS analysis and ESI-MS has been widely used to characterize protein. 17 Under ESI-MS conditions, a protein molecule is typically detected as multiple-charged ions, and thus charge state distribution (CSD) of protein could be related to protein conformation.…”

Section: Introductionmentioning

confidence: 99%

Direct Detection of Lysozyme in Viscous Raw Hen Egg White Binding to Sodium Dodecyl Sulfonate by Reactive Wooden-tip Electrospray Ionization Mass Spectrometry

Yao

Yuan

et al. 2019

ANAL. SCI.

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Direct characterization of native protein binding to ligands in raw biological samples is a challenging task, because the ligand solution might induce proteins to aggregation, flocculation and denaturation. In this work, we developed a reactive wooden-tip electrospray ionization mass spectrometry (ESI-MS) for formation and characterization of protein-ligand complexes upon rapid mixing in electrospray droplets. Raw viscous hen egg white (HEW) was directly loaded onto a wooden tip to induce spray ionization, and sodium dodecyl sulfonate (SDS) solution was directly loaded into the HEW spray by a pipette tip, and thus lysozyme-DS complexes were then formed in the electrospray droplets and were detected subsequently by mass spectrometry. The new approach was successfully applied to investigate interaction of SDS and native lysozyme in electrospray droplets of standard solution and raw egg white. Our results showed that wooden-tip ESI-MS is a promising method to form and characterize protein-ligand complexes.

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Section: Introductionmentioning

confidence: 99%

Direct Detection of Lysozyme in Viscous Raw Hen Egg White Binding to Sodium Dodecyl Sulfonate by Reactive Wooden-tip Electrospray Ionization Mass Spectrometry

Yao

Yuan

et al. 2019

ANAL. SCI.

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“…Hence, the determination of trace, minor and major elements in various matrices with reasonable accuracy and precision is of considerable research interest for the benefit of mankind. [1][2][3][4] With the increase in industrialization a huge amount of pollutants are released into the atmosphere, and therefore the elemental characterization of soil, air, water and vegetation products with respect to trace elements can be directly correlated to nearby industrial installations.…”

Section: Introductionmentioning

confidence: 99%

Universal EDXRF Method for Multi-elemental Determinations Using Fused Bead Specimens

2019

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A systematic study on the EDXRF determination of multi-elements using fusion bead specimens and a universal calibration procedure was carried out. Beads of multi-elements were prepared by mixing MERCK multi-elemental standard solutions with the fusion flux. The elemental X-ray lines of K, Ca, Ba, Cr, Mn, Fe, Co, Ni, Cu and Zn were excited using a Ge secondary target and that of Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Pb, Bi and Sr using a Rh primary target. The relative sensitivities of the elemental X-ray lines obtained using different excitation modes were calculated using a single bead. Using this relative sensitivity, the concentration of elements in other bead samples was determined. The average precision obtained was 3% (1 s) and the average deviation from expected values, calculated on the basis of sample preparation, was 6%. In order to further countercheck the validity of this methodology, a standard soil sample received from IAEA was analyzed.

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Determination of Fe, Ni, Cu, Zn, Cd and Pb in seawater by isotope dilution automatic solid-phase extraction—ICP-MS

Zhang

Jiang

et al. 2022

Acta Oceanol. Sin.

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Accurate Determination of Trace Molybdenum in Drinking Water by Isotope Dilution Inductively Coupled Plasma Mass Spectrometry

Abstract: An optimum 97 Mo/ 95 Mo ratio of 11 was obtained by Eq. (1) to achieve a minimum error multiplication factor, and hence lowered the measurement uncertainty, 16

Cited by 4 publications

References 15 publications

Direct Detection of Lysozyme in Viscous Raw Hen Egg White Binding to Sodium Dodecyl Sulfonate by Reactive Wooden-tip Electrospray Ionization Mass Spectrometry

Direct Detection of Lysozyme in Viscous Raw Hen Egg White Binding to Sodium Dodecyl Sulfonate by Reactive Wooden-tip Electrospray Ionization Mass Spectrometry

Universal EDXRF Method for Multi-elemental Determinations Using Fused Bead Specimens

Determination of Fe, Ni, Cu, Zn, Cd and Pb in seawater by isotope dilution automatic solid-phase extraction—ICP-MS

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