sample concentration method 中文意思是什麼

sample concentration method 解釋
試樣濃縮法
  • sample : n 1 樣品,貨樣。2 標本;榜樣,實例。3 【統計】典型取樣,抽檢查。4 【電訊】信號瞬時值。5 【冶金】 ...
  • concentration : n. 1. 集中。2. 【化學】提濃,蒸濃,濃縮;濃度;稠密度;【礦物】汰選,選礦,富化。3. 集中注意,專心。
  • method : n 1 方法,方式;順序。2 (思想、言談上的)條理,規律,秩序。3 【生物學】分類法。4 〈M 〉【戲劇】...
  1. Determination of end carboxyl content in pet chip using photometric method was discussed, the optimiza tion of measuring condition and parameters such as sample weight, concentration of titrant, blank of solvent were stud ied

    論述採用光度法測定聚酯切片的端羧基,對稱樣量、滴定劑的濃度、溶劑的空白等測試條件和參數進行優化選擇。
  2. 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

    由於鈾中鋯的含量范圍很廣,從1 . 50 10 ~ ( - 6 ) 3 . 8g / gu ,在分離和測量時,既要考慮盡量地減少鈾的殘留量以消除鈾對鋯測量產生的影響,又要獲得鋯的理想的回收率,因此本文在分離方法的選擇上比較了硅膠吸附分離法, cl - tbp萃取色層法, tta萃取色層法和tta萃取分離法的優缺點,認為tta萃取分離法可以達到理想的分離效果。
  3. To explore the effect of bamboo stick contacting time with serum sample on serum potassium ion concentration, we have systematically measured serum potassium ion concentration of bamboo stick contacting with serum sample at different times using ion selective electrode method and analyzed their potassium ion concentrations using matching t test

    摘要為探討竹簽接觸血清樣品時間對鉀離子濃度影響的程度,採用離子選擇電極法分別對竹簽在血清中浸泡不同時間的樣品鉀離子濃度進行測定,並以配對t檢驗對不同浸泡時間的血清鉀離子濃度進行對比。
  4. Moreover, we observed the concentration profiles of the ion - implanted samples and the diffused samples by c - v method, and discovered that the carrier concentration decreased with increasing of the diffusion depth. whereas, the peak concentration of the ion - implanted samples located at 0. 248151 u m beneath the surface and the peak concentration of the diffused samples located at the surface. furthermore, the carrier concentration of mnas source diffused sample as high as 102 % m3can be obtained, and the surface was much smoother compared with that of the pure mn source diffused sample

    發現兩種摻雜方法的載流子濃度大體上都是隨著擴散深度的增加而下降,不同的是離子注入樣品的載流子最高濃度處于離表面深度0 . 248151 m處,而擴散樣品的載流子最高濃度處于表面,並摻錳( mn )砷化鋅( gaas )材料性質的研究且還發現相對于純mn源擴散樣品來說, mnas源擴散樣品的表面較為光滑,且表面載流子濃度高達1020 cm 』數量級。
  5. The spectrum used for modal set is transmitted to pc by rs232. to get the relation between the spectrum and nutrition component ' s concentration, we set up the modal used method of stepwise regression in pc, transmit the coefficient of modal to apparatus, then we can predict the nutrition component ' s concentration of the wheat sample

    通過rs232串口,將建模樣品的光譜上傳到pc機。在pc機上採用逐步回歸建模,得到營養成分濃度與光譜的關系,將模型的系數傳同儀器,即可預測未知樣品營養成分的濃度。
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