A review on the modem instrumental analysis methods of multicomponent precious metal elements was presented with 145 references published between 1992 and 1996, overing ICP-AE5, AAS, HPLC, photometric analysis, FIA, and electroanalysis,Some points on development of trace precious metal analysis were suggested.
The thesis studied on the curing procedure, chemical structure, FE and mechanics properties of three UF resin with low FE by 13C NMR、 TBA、 DSC、 DMA and 13C CP/MAS NMR in details.
Now the determination of Mn 3+ and Mn 4+ is lack of new technology and modern analyzing devices, so the future development of sensitivity and determination limit is the developing trend.
In this paper, A method of modern instrument analysis-mass spectremetric isotope dilution has been used for the determinations of REE in the samples of cenozoic alkali basalts and their ultramafic inclusions and megacryst minerals from Kuandian, Liaoning Provence, and Penglai, Shandong Provence.
In this paper, A method of modern instrument analysis-mass spectremetric isotope dilution has been used for the determinations of REE in the samples of cenozoic alkali basalts and their ultramafic inclusions and megacryst minerals from Kuandian, Liaoning Provence, and Penglai, Shandong Provence. The diagrams of normalized REE patterns, calculated and plotted using Nakamura's chondrite values, show that the REE abundances and patterns of the Samples from Penglai are very similar to those from Kuandian. This uniformity...
In this paper, A method of modern instrument analysis-mass spectremetric isotope dilution has been used for the determinations of REE in the samples of cenozoic alkali basalts and their ultramafic inclusions and megacryst minerals from Kuandian, Liaoning Provence, and Penglai, Shandong Provence. The diagrams of normalized REE patterns, calculated and plotted using Nakamura's chondrite values, show that the REE abundances and patterns of the Samples from Penglai are very similar to those from Kuandian. This uniformity arises from similar geologic structures and physico-chemical condi-tioiis of melting and fractional crystallization processes of these two areas. On the basis of REE patterns the spinel Iherzolites and the eclogites in the two areas have been considered as ultramafic inclusions of primary phases and residual phases respectively. The pyropes as megacryst may be earlier products from liquidus and the later metam-orphism has not led to redistribution of REE. The crystallization of the Al-rich augites may have occured later than that of the pyropes.
The method on group of derivative,ultraviolet absoption spectra lines was used to determined for forty species of Chinese materia medica in four species of solvent.Their diagrams on group of first order dervative ultraviolet species of solvent,and their characteristic and reappearance and sensitivity are all better than the old method.This method is rapid and accurate,and data were directly perceived through the senses.The first order derivative ultraviolet spectrograms have been determined for some Chinese...
The method on group of derivative,ultraviolet absoption spectra lines was used to determined for forty species of Chinese materia medica in four species of solvent.Their diagrams on group of first order dervative ultraviolet species of solvent,and their characteristic and reappearance and sensitivity are all better than the old method.This method is rapid and accurate,and data were directly perceived through the senses.The first order derivative ultraviolet spectrograms have been determined for some Chinese mataria medica are similar in gene.A method of modernized instrument analyse of highly sensitivity and high- speed and handy for identification of Chinese materia mediea was provided.
The metabolism of Herbicide 83-1 was studied in rats in vivo. After oral administration of the herbicide, four ultimate metaholites were isolated and identified from urine by means of HPLC, UV, IR and MS. It was found that the metabolic reactions of the herbicide in rats were reduction and conjugation. The metabolic pathway of the herbicide in rats was deduced.
现代仪器分析方法
modern instrumental analysis method
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