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一个多世纪以来,点滴反应仅在滤纸和不渗透表面上进行。前者具有毛细作用,后者可以加热方式浓集低浓度组分,两者之长不能兼备。现代科学技术的发展要求点滴反应能快速检测溶液中浓度低于通常点滴反应最低浓度以下组分。(我们称其为低浓度组分,它是一个相对量而无确定的浓度值或浓度范围)。尖端富集法以研究者Skalos的名字命名,它被誉为是对提高点滴反应灵敏度的一大贡献,但此法操作不甚方便且仅能用于定性检出。Weisz的环炉技术可用于组分分离、半定量的测定,现已广泛推广使用,但在通常情况下,仅能提高纸上点滴反应灵敏度3—10倍。
For more than a century, drip reactions have been performed on filter paper and impervious surfaces. The former has a capillary effect, the latter can heat concentration of low concentrations of components, the length of both can not be. The development of modern science and technology requires that the drip reaction can quickly detect the concentration of the solution below the usual drip reaction minimum concentration of the following components. (We call it a low concentration component, which is a relative amount without a definitive concentration value or concentration range). The tip-enrichment method, named Skalos, is credited as a contribution to increasing the responsiveness of drip, but it is not easy to use and can only be used for qualitative detection. Weisz’s ring furnace technology can be used for component separation, semi-quantitative determination, has been widely used, but under normal circumstances, can only increase the sensitivity of paper drip response 3-10 times.