reagent concentration 中文意思是什麼

reagent concentration 解釋
試劑濃度
  • reagent : n. 1. 【化學】試藥，試劑；反應物。2. 被試驗者。
  • 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。
  1. ( 2 ) the method of determining the concentration of tbh is studied in this paper. the concentration of normal - amount tbh can be determined by kios oxidation. the presence of hnoa in the titration media has no effect on the tritration results. the concentration of trace - amount tbh can be determined by colorimetric methodising paradimethylaminobenzaldehyde as a color reagent

    （ 2 ）研究了tbh濃度的測定方法。 kio3氧化法能有效測定常量tbh的濃度， tbh溶液中存在一定濃度的hno3時對滴定結果沒有影響。以對二甲氨基苯甲醛為顯色劑，採用比色法能測定微量tbh的濃度。
  2. The coating effects of these modifiers are evaluated in the order of ( napoa ) 6 > c2hsoh > na2sio3 > h2o > naoh. the organic modification reagent such as sodium stearate and polyethylene glycol can modify the nanosized powders, sodium stearate has good effect when its adding amount to nano - tio2 is 8 %, the concentration is about 0. 1 mol / l, the value of ph is 5, and the reaction period is up 30 minutes. to modify the powders with polyethylene glycol, the amount must be limited from 1 % to 2 %, the value of ph is between 3 and 5, and the reaction period should be up to 2 hours, the effect will be mo

    不同分散劑對其分散效果為: （ napo3 ） 6 > czhsoh > n處5103 > hzo > naoh ;採用有機改性劑硬脂酸鈉和聚乙二醇進行了納米二氧化欽的有機改性研究，獲得了改性劑用量，濃度等最佳工藝條件的參數;對納米二氧化欽進行了包裹二氧化硅的研究，適當調整溶液的ph值，滴加硫酸的速度，以及改變滴加方式，獲得了較緻密的包覆二氧化欽，其分散性和酸溶性都獲得了較大程度的改善。
  3. The best condition for extracting polysaccharide from porphyridium cruentum were as follow : alcohol concentration was 50 %, alcohol volume was 1 - fold time, percolation time was 0. 5h, the volume ratio of glycoprotein solution to sevag reagent was 2 : 1, time was 45min and sevag reagent was 4 : 1 between chloroform and butanol. the result also indicate that sodium acetate anhydrous and nh4cl were the best carbonic and nitrogen source for polysa

    血色紫球藻的最優提取工藝為乙醇濃度50 % ，乙醇用量為1倍體積，醇沉時間為0 . 5小時;氯仿與正丁醇的比例4 : 1 ，樣液與sevag試劑的比例2 : 1 ，作用時間為45min ;五種碳源的影響差異不顯著，氮源的影響差異顯著，其中添加無水乙酸鈉和nh4ci的培養基多糖產率最高，分別為33 . 784mg / l和40 . 997mg / l 。
  4. The polysaccharide production were 37. 296mg / l and 12. 961mg / l. the best conditions for extracting polysaccharide from porphyridium purpureum were as follow : alcohol concentration was 75 %, alcohol volume was 2 - fold time, percolation time was 1h, the volume ratio of glycoprotein solution to sevag reagent was 1 : 2, time was 45min and sevag reagent was 3 : 1 between chloroform and butanol. the result also indicate that nahco3 and nh4cl were the best carbonic and nitrogen sources for polysaccharide respectively

    淡色紫球藻的最優提取工藝為乙醇濃度75 ，乙醇用量為2倍體積，醇沉時間為1小時；氯仿與正丁醇的比例3 ： 1 ，樣液與sevag試劑的比例1 ： 2 ，作用時間為45min ：由方差分析可得五種碳源和五種氮源對胞外多糖的影響不顯著，添加碳酸氫鈉和摘要nhoci的多糖產率最高，分別為41
  5. Deproteinized from crude polysaccharide by adopting sevag method. through orthogonal test, we found that the best constitution for extracting polysaccharide from porphyridium aerugineum 755 were as follow : alcohol concentration was 50 %, alcohol volume was 3 - fold time, percolation time was 1. 5h, the volume ratio of glycoprotein solution to sevag reagent was 1 : 2, time was 15min and sevag reagent was 4 : 1 between chloroform and butanol. the result also indicate that lactose and ( nh4 ) 2so4 were the best carbonic and nitrogen sources for polysaccharide respectively

    研究結果表明，三種紫球藻的最佳提取工藝各不相同，銅綠紫球藻的最優提取工藝為乙醇濃度50 ，乙醇用量為3倍體積，醇沉時間為1 . 5小時；氯仿與正丁醇的比例4 ： 1 ，樣液與sevag試劑的比例1 ： 2 ，作用時間為15min ；由方差分析可得五種碳源和五種氮源對胞外多糖的影響不顯著，其中添加乳糖和（ nh _ 4 ） _ 2so _ 4的培養基多糖產率最高，分別為37 . 296mg l和12 . 961mg l 。
  6. Application of a plc automatic reagent feeding system in a concentration plant

    自動加藥系統的應用
  7. Because the limited concentration that abs and ps absorb liquid antistatic reagent is very low, it is better if add appropriate solid powder material when preparing high - concentration antistatic master batch

    由於abs 、 ps吸收液體抗靜電劑的極限濃度較低，製作高濃度抗靜電母料時，可加入合適的固體粉末材料。
  8. Because the limited concentration that macromolecular materials absorb liquid antistatic reagent is very low, it is better if add appropriate solid powder material when preparing high - concentration antistatic master batch

    由於高分子材料吸收液體抗靜電劑的極限濃度較低，製作高濃度抗靜電母料時，可加入合適的固體粉末材料。
  9. Because the limited concentration that macromolecular materials absorb liquid antistatic reagent is very low, it is better if add appropriate solid powder material when preparing high - concentration antistatic master batch. there are a little precipitation in product, but no effect on use effect

    由於高分子材料吸收液體抗靜電劑的極限濃度較低，製作高濃度抗靜電母料時，可加入合適的固體粉末材料。本品有少許沉澱物，不影響使用效果；使用時最好先用乾燥、潔凈的棍棒適當攪拌，以提高本品的均勻性。
  10. First of all, nano - alumina dispersed in water is studied. we selected anion polyelectrolyte pmaa and cation surface active reagent ( ctab ) as dispersant. it is discussed that dispersant dosage, ph value, disperse time, disperse means and nano - alumina concentration affect disperse effect

    本文首先研究了納米al2o3在水中的分散，選擇陰離子聚電解質聚丙烯酸氨和陽離子表面活性劑作為分散劑，討論了分散劑用量、 ph值、分散時間、分散方法以及納米al2o3粒子濃度對分散效果的影響。
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