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- The optimal synthesis with polyphosphoric acid was put forward to produce high purity of phosphoric acid monoester,and its application was described. 介绍了磷酸单酯的各种合成工艺路线,并比较了它们的优缺点,提出了聚磷酸法是合成高纯度磷酸单酯的最佳路线。
- high purity of phosphoric acid 高纯磷酸
- The high purity amidinothiourea phosphate(P800) was reacted with the dicyanodiamide and phosphoric acid. 利用双氰胺和磷酸反应得到高纯度脒基脲磷酸盐P800。
- The high purity amidinothiourea phosphate (P800) was reacted with the dicyanodiamide and phosphoric acid. 摘要利用双氰胺和磷酸反应得到高纯度脒基脲磷酸盐P800。
- A salt or an ester of phosphoric acid. 磷酸盐、磷酸脂磷酸的一种盐或脂
- Anodization of high purity Al foil in phosphoric acid solution at different pressures was experimentally studied to understand the formation mechanism of the nano-porous anodic alumina membranes. 摘要为探讨多孔铝阳极氧化膜的形成机理,研究了不同气压条件下铝在磷酸溶液中的阳极氧化过程,发现在真空下进行阳极氧化,氧气析出非常明显。
- By the method,gallic acid could be obtained at a high purity of 97% just through two step chromatography. 经过一次逆流色谱分离,可以得到纯度在70%25以上的没食子酸,第二次分离即可使其纯度达到97%25以上。
- Colas contain high levels of phosphoric acid, which has been linked to kidney stones and other renal problems. 可乐富含磷酸,而磷酸与肾结石和其它肾脏问题有关。
- Through the preliminary optimization of the purification condition, we got high purity of pancreas kallikrein product. 通过纯化条件的初步优化,最终得到胰K纯品,收率大于85%25。
- This technology was effective with the features of high recovery and high purity of Pt. 该方法有效可行,分离效果好,金属回收率高,产品质量符合国家标准。
- Conclusion:High purity of MSC can be obtained by density gradient centrifugation. 结论:密度梯度离心法分离获得的人胚胎骨髓间充质干细胞纯度高。
- Its advantages include high purity of carotin crystal, low acidity of the oil solution of carotin and stable quality. 本发明获得的胡萝卜素晶体纯度高,胡萝卜素油溶品酸价低、质量稳定。
- At high temperature and in the presence of phosphoric acid, the alkyl group is fractured into the corresponding olefine, according to which the alkyl of long-chain aliphatic amine can be identified. 在高温和磷酸存在下,脂肪胺中的烷基裂解为相应的烯烃,以此可鉴定脂肪胺的烷基链长。
- The results showed that the method of triphenyl phosphite had many advantages,such as easiness of operation and high purity of the product. 研究表明,亚磷酸三苯酯法具有操作简便、所得产品纯度高等特点。
- Methods of direct prodction of phosphoric acid from the phosphatic rock are described. 本文介绍了采用阴离子交换树脂,从磷矿石中直接制取磷酸的方法。
- It's found that high purity of Crocins can be gained with synthetic macroporous polymericadsorbents by column chromatography.Colourity is 172. 用大孔吸附剂对栀子黄进行柱层析分离,得到了纯度较高的栀子黄,色价达172。
- Several synthesis of phosphoric acid monoester was introduced,and their strong suit and defect were compared. 介绍了磷酸单酯的各种合成工艺路线,并比较了它们的优缺点,提出了聚磷酸法是合成高纯度磷酸单酯的最佳路线。
- The leaching process of cobalt from waste hard-alloy by use of phosphoric acid and ozogen is introduced. 介绍了利用磷酸和过氧化氢从废硬质合金中浸取钴的方法。
- These methods possess shortcomings.This study searched a high purity of human fetal olfactory bulb OECs in vitro culture method by comparing three different methods. 比较3种纯化方法原代培养人胚嗅球嗅鞘细胞的纯度,寻求简单实用的高纯度人胚嗅球嗅鞘细胞的体外培养方法。
- This method has the advantages of high separation efficiency, low pressure drop, high operating elasticity and high yield, and can obtain high purity of 97% citral. 此方法分离效率高,压降小,操作弹性大,收率高,能直接获得97%25的高纯度柠檬醛。