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Determination of orthophosphate by flow injection analysis with amperometric detection
A technique for obtaining matrix-assisted laser desorption/ionization time-of-flight mass spectra of poorly soluble and insoluble aromatic polyamides.
Wet grinding methods for obtaining matrix-assisted laser desorption/ionization time-of-flight mass spectra of poorly soluble and insoluble low molecular mass oligomers (<4600 Da) of Nomex and Kevlar… Expand
Preparation, titration, and storage of chloroacetaldehyde for fluorometric determination of adenine and its derivatives
Characterization, supramolecular assembly, and nanostructures of thiophene dendrimers.
- Chuanjun Xia, Xiaowu Fan, J. Locklin, R. Advincula, A. Gies, W. Nonidez
- Chemistry, Medicine
- Journal of the American Chemical Society
- 19 June 2004
The results demonstrated the unique ability of thiophene dendrimers to form nanostructures on surfaces and showed that the different symmetry of packing for 30T and 14T-1 is also dependent on several factors, such as the molecular shape, size, and the presence of noncovalent intermolecular interactions. Expand
Characterization of poly(L-lactide)-block-poly(ethylene oxide)-block-poly(L-lactide) triblock copolymer by liquid chromatography at the critical condition and by MALDI-TOF mass spectrometry.
It is concluded that the interaction of the triblock copolymers with the stationary phase is affected by the distribution of the interacting blocks at the two ends of the center PEO block, in addition to the total number of LLA units in the triblocked copolymer. Expand
Characterization of Poly(ethylene oxide)-block-poly(l-lactide) by HPLC and MALDI-TOF Mass Spectrometry
Various physical proper-ties, such as the sol-gel transition, micellization, anddegradation, need to be considered to optimize thefunctional characteristics of the block copolymer sys-tems, and they… Expand
Direct determination of total serum phospholipid by x-ray fluorescence.
An x-ray fluorescence method for measurement of total serum phospholipid is described, free of interference from other lipid constituents and phosphorous content can be standardized by comparison with very stable inorganic phosphates. Expand
Characterization of an insoluble polyimide oligomer by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry.
- A. Gies, W. Nonidez, M. Anthamatten, R. Cook, J. Mays
- Chemistry, Medicine
- Rapid communications in mass spectrometry : RCM
- 30 October 2002
The spectra obtained by the matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectra are shown to be sensitive to the matrix employed in the analysis as well as the quantity of cationizing agent combined with the matrix. Expand
Flow injection analysis of L-lactate with enzyme amplification and amperometric detection.
A flow injection analysis method for the determination of the lactate anion with enzyme amplification and amperometric detection is described. The system utilizes an oxygen electrode for measurement… Expand