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由于铍及其化合物属于高毒性物质,持续作用强,即便是痕量也可致人中毒,同时其对环境的污染也引起人们的高度注意。所以,含铍废液的长期存放必将对环境和人体造成损害,为此,必须寻求一种行之有效的处理方法,以实现该废液的无害化处理。含铍废液的处理技术研究在国内外还不多见,见诸于资料的主要有工业树脂吸附和有机溶剂萃取及沉降等。 相似文献
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Fluorescence analysis applied in the study of lactic acid bacteria (LAB) provides a new method and theory to study probiotics and realize the detection and identification of the strains. It is also possible to achieve automation and computerization. In this letter, the differences between the fluorescence spectra of lactobacilIus casei-BDI (Lc-BDI) and Streptococcus thermophilus (St) are shown, and the second-order derivative spectra are used to further study the diversity of these two strains. According to the results, with the excitation wavelengths of 285 and 340 nm, there are significant differences between them. The experiment is repeated for 6 times, showing good repetitiveness. 相似文献
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针对低水平氚化水的排放问题,20世纪70年代已开始了这方面的研究,并逐渐成为氚废水处理领域的研究热点。由于传统的同位素分离法在这方面的应用受到限制,所以各国科学家相继提出了膜技术和树脂交换、富集等方法,并进行了初步可行性研究。 相似文献
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