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As one of the strategic mineral material, high-purity quartz has been widely used in integrated circuits, semiconductor chips, solar energy and other high-tech industries. However, raw material deposits that can be used to produce high-purity quartz are extremely scarce, especially in China. Southeastern Hubei is the main distribution area of vein quartz deposits in Hubei Province. In this paper, the gangue mineral types and inclusion characteristics of vein quartz from the Fujiashan quartz deposit in southeastern Hubei are observed by optical microscope and scanning electron microscope. The trace element concentrations of the raw quartz material are analyzed by inductively coupled plasma atomic emission spectrometry (ICP-OES) to obtain the impurity element characteristics of Fujiashan quartz deposit and evaluate the potential of the deposit as a raw material for high-purity quartz. The results show that the average content of SiO2 of the raw quartz is more than 99. 95%, and the impurity elements( Al, K, Fe, Ti, Ca, etc. ) mainly occur in gangue minerals such as muscovite, potassium feldspar and iron oxide, lattice-bound form and fluid inclusions. The results show that the quality of Fujiashan quartz raw ore reaches the standard of low-end high-purity quartz, and it may have the potential to produce middle-to-high end high-purity quartz after traditional purification. [ABSTRACT FROM AUTHOR]

Cataluminescence (CTL) is a phenomenon of light radiation generated when analyte moleculars were oxidized by catalyst. In the past few decades, CTL has developed rapidly and become a promising detection technique, especially in gas sensing, and has attracted much attention of researchers for its potential versatile applications in emission control, public safety, and environmental protection. The analytical system based on CTL has low detection limit, high sensitivity and simple instrument which easy to operate, which shows huge advantages in the detection of inorganic gases and volatile organic compounds. The library of sensing materials has been greatly enriched to thousands kinds, which contains metals, metal/non-metal oxides, sulfide, metal salts, organic compounds, ceramic, glass and other types of materials; Composite materials have been developed; The decreasing of material dimensions to nanoscale provided new opportunities for its development; The morphology of material has also been explored. Some novel hyphenated techniques based on CTL coupled to other techniques including preconcentration/sepration, nebulization, plasma have been developed, as well as some new CTL technique including static CTL, cyclic CTL and ect. Thanks to development of sensing material and the appearance of these novel techniques, the selectivity and sensitivity of CTL system has been improved, and the range of CTL application has been extended. In this article, the progress made in the field of cataluminescence, especially in latest developments of analytical applications were reviewed. The catalysts used in CTL, the recent novel CTL techniques were sumerized. The future of the cataluminescence was also forecasted.

A novel chemiluminescence method coupled with flow injection technique for the determination of ractopamine was developed. It was based on the enhancement of the chemiluminescence by ractopamine derived from the chemiluminescence reaction between luminol and ferricyanide in sodium hydroxide medium. The linear calibration range of the chemiluminescence intensity with respect to the ractopamine concentration covers from 4.0 x 10(-9) - 8.0 x 10(-7) g x mL(-1). The relative standard deviation for ractopamine is 5.6% (n = 11), and the detection limit is 2.5 x 10(-9) g x mL(-1). The method was firstly applied to the determination of ractopamine in biological samples with satisfactory results. The recovery was between 69.3% and 101.3%.