硅胶吸附 meaning in English

silica gel adsorption

Because the concentration of zirconium in uranium has large ranges , from 1 . 50xlo ' 6 - 3 . 8g / gu , not only how to decrease the remainder of uranium to eliminate its determinate effect but also how to acquire higher recovery of zirconium is considered , so the method of silica gel , the method of tbp levextrel resin chromatography , the method of tta chromatography and the method of tta extraction are compared . then tta extraction is chosen to acquire the ideal separation purpose . compared with icp - ms and icp - aes , xrf has characters of high repeatability , stability , low cost , high concentration elements analysis , the ability to determinate solid sample and having comprehensive practicability , but xrf has lower sensitivity , so how to increase the concentration of the sample to acquire better precision is a difficult problem , the optimum of operating condition : the integral time of spectral lines is 60s , the integral time of background lines is 20s , the voltage of xrf is 50kv , the electric current is 50ma
由于铀中锆的含量范围很广，从1 . 50 10 ~ ( - 6 ) 3 . 8g / gu ，在分离和测量时，既要考虑尽量地减少铀的残留量以消除铀对锆测量产生的影响，又要获得锆的理想的回收率，因此本文在分离方法的选择上比较了硅胶吸附分离法， cl - tbp萃取色层法， tta萃取色层法和tta萃取分离法的优缺点，认为tta萃取分离法可以达到理想的分离效果。