亚硫酸氢钠

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  • sodium bisulfite
亚硫酸氢钠亚硫酸氢钠
  1. 以丙酮、甲醛和亚硫酸氢钠为主要原料合成了水溶性磺化丙酮-甲醛缩合物(SAF)。

    Water soluble sulfonated acetone formaldehyde ( SAF ) resins were synthesized by using acetone , formaldehyde and sodium bisulfite as starting materials .

  2. 最佳的护色剂组合为0.005%亚硫酸氢钠+0.1%柠檬酸+0.02%EDTA,经过0.5h的平衡后进行腌制。

    And the relative optimum color retention treatment was : using sodium bisulfite 0.005 % , citric acid 0.1 % and EDTA 0.02 % as the color retention agents and equilibrating for half an hour .

  3. ICP-AES仪同时测定亚硫酸氢钠中微量铁、砷和铅

    Determination of Fe , As and Pb in Sodium Bisulphite by Icp-Aes

  4. 本文基于维生素K3(亚硫酸氢钠甲萘醌)或甲萘醌在碱性介质中与氨基硫脲生成紫色化合物的反应。

    The method was based on the reaction of the vitamin K_3 ( menadione sodium bisulfite ) or menadione with thiosemicarbazide to form an violet compound in alkaline medium .

  5. 亚硫酸氢钠修饰基因组DNA,甲基化特异性PCR(MSP)检测各启动子的甲基化状态。

    The genomic DNA extracted from tissue specimens and cell lines were modified by bisulfite sodium and determined by methylation specific PCR ( MSP ) .

  6. 以水为溶剂,亚硫酸氢钠和过硫酸钾为引发剂,合成了N羧甲基N,N二甲基N烯丙基氢氧化铵内盐&丙烯酰胺(AA)两性共聚物;

    Finally CDAH / acrylamide ( AA ) amphoteric copolymer was prepared in aqueous solution with sodium hydrogen sulfate ( NaHSO 3 ) and potassium persulfate ( K 2S 2O 8 ) as initiators .

  7. 方法用亚硫酸氢钠修饰变性后的被测DNA,随之进行甲基化、非甲基化特异的PCR扩增。

    Methods The denatured target DNA was modified by sodium bisulfate , which converting all unmethylated , but not methylated , cytosines to uracils , and then was amplified with primers specific for methylated versus unmethylated DNA .

  8. 采用苯胺滴加的方法、FTIR的研究方法,验证亚硫酸氢钠封闭异氰酸酯的反应的可行性,并进一步考证了用DSC方法得到的解封闭温度的正确性。

    The analytic results by DSC were verified by aniline titration analysis and FTIR analysis , which further indicated that it was available to block isocyanate by sodium bisulfate .

  9. 第四部分:首先以过硫酸钾、亚硫酸氢钠为引发剂,水为溶剂的体系中合成了聚丙烯酸(PAA)。

    Part four consisted the following points : Firstly acrylic acid was polymerized by choosing potassium persulfate and bisulfite natrium as initiator and water as solvent .

  10. 微乳液中加入少量有机酸酯(NZ)和亚硫酸氢钠(NS),可有效降低泛黄性,且不增加成本、不降低柔软性。

    Adding a little of NZ and NS in microemulsion , the nature of its yellowing is considerably reduced with no concerns of increasing cost and decreasing softness .

  11. 结果表明:在同样浓度和处理条件下,亚硫酸氢钠比亚硫酸钠具有较好的防止对虾黑变的效果,对虾在冻藏过程中,体内SO2残留量逐渐消减。

    The results showed that sodium hydrogen sulfite could prevent the prawns more efficiently from blackening than sodium sulfite at the same processing conditions . SO2 residue in prawn reduced gradually under cooling conditions .

  12. 紫外分光光度仪检测DNA浓度,选用OD260/OD280值大于1.75的样品。采取强碱变性、亚硫酸氢钠/对苯二酚法处理DNA后,用层析柱过柱除盐。

    DNA concentration and purity were tested by Ultraviolet spectrum , the sampled OD 260 / OD280 value was larger than 1 . 75 . DNA was denatured by strong base and then treated with Sodium Bisulfate / benzenediol , and salt were eliminated through chromatogra-phy column .

  13. Beagle犬静脉注射亚硫酸氢钠穿心莲内酯后的药动学行为符合二室模型。

    After intravenous injections of 50 , 40 , 20 mg · kg - 1 of andrographolide sodium bisulphite in beagle dogs , the concentration-time curve was fitted to a two compartment model .

  14. 提取基因组DNA,亚硫酸氢钠修饰,巢式聚合酶链反应(nestedPCR)加甲基化特异性PCR(MSP)检测IGF-II基因启动子P3的甲基化状态,PCR产物经克隆、测序验证。

    The genomic DNA were extracted and modified by bisulfite sodium , the methylation at promoter P3 of IGF-II were detected by means of nested polymerase chain reaction ( nested PCR ) and methylation specific PCR ( MSP ), then sequencing .

  15. 研究了二氧化硫(SO2)衍生物&亚硫酸钠和亚硫酸氢钠混合物(分子比为3∶1),对小鼠心、肝、肺中蛋白质的氧化损伤作用,探讨其分子作用机制。

    To study the protein oxidative damage and its molecular mechanism induced by sulfur dioxide ( SO_2 ) derivatives including sodium sulfite and sodium bisulfite mixture ( 3 ∶ 1 , mol ) in hearts , livers and lungs of mice .

  16. 结果表明:亚硫酸氢钠的脱氯效果最好,反应10min,氯脱除率即达100%;

    The results showed that , Dechlorination performance of sodium hydrogen sulfite was best . At 10 min reaction time , rate of dechlorination was 100 % .

  17. 用腹腔注射的方法对实验小鼠进行SO2衍生物(亚硫酸钠和亚硫酸氢钠,分子比为3:1)染毒,染毒剂量分别为0,0.025,0.100,0.400g/(kg·d),共染毒5d。

    The contaminative of SO2 derivatives ( sodium sulfite and sodium bisulfite molecular ratio of 3:1 ) was carried out on test mice , using abdominal cavity inject techniques ; the contamination doses were 0 , 0.025 , 0.100 , 0.400g / ( kg · d ) for 5 days .

  18. 试验表明,当被测液pH值为5~6,在反应温度为10℃以下加入适量的新配制的亚硫酸氢钠,反应20min以上,然后用碘液滴定,测定结果较为准确。

    The experiment showed that the determination results titrated by iodine were correct when pH was 5 ~ 6 , reaction temperature was 0 ~ 10 ℃, the reaction time was above 20 minutes after the fresh solution of sodium hydrogen sulfite was added .

  19. 以亚硫酸氢钠甲萘醌(MSB)和烟酰胺为原料,在常温下合成了稳定型维生素K3(MNB)并对影响反应的因素进行了考察。

    Using menadione sodium bisulfite ( MSB ) and nicotinamide as raw materials , effects of reaction conditions on synthesis of menadione nicotinamide bisulfite ( MNB ) at room temperature were investigated .

  20. 亚硫酸氢钠对丘陵茶产量与品质的改善

    Improvement of Tea Yield and Quality by NaHSO_3 in Hill Area

  21. 亚硫酸氢钠影响桃树产量和质量的生理学分析

    Physiological analysis for effect of nahso_3 on Peach yield and quality

  22. 亚硫酸氢钠对大蒜有丝分裂周期的影响

    Effect of Sodium Bisulfite on the Mitotic Cycle of Allium sativum

  23. 缩节胺和亚硫酸氢钠对花生的化学调控效应

    Chemical regulation of morphogenesis in peanuts using DPC and NaHSO_3

  24. 亚硫酸氢钠作链转移剂合成低分子量聚丙烯酸钠

    Synthesis of Low-molecular Weight Sodium Polyacrylate with Sodium Bisulfite as Chain-transfer Agent

  25. 丙烯醛亚硫酸氢钠加合物的晶体结构

    The crystal structure of the addition product of acrolein with sodium bisulfite

  26. 亚硫酸氢钠对植物叶片气孔开度的调节作用

    Regulative function of nahso_3 to stomatal exposure of plant blade

  27. 亚硫酸氢钠反萃取法提取香兰素工艺特性研究

    Study of the Technology Characteristics on Vanillin Extraction with Sodium Bisulfite Solution

  28. 穿心莲内酯亚硫酸氢钠加成物的结构研究

    Studies on the structure of the adduct of andrographolide with sodium hydrogen sulfite

  29. 纤维素黄[原]酸[酯]钠过硫酸钾-亚硫酸氢钠引发麦草浆纤维与己内酰胺接枝共聚改性

    Grafting Copolymerization of Caprolactam onto Wheat Straw Pulp Initiated by Potassium Persulfate-Sodium Bisulfite

  30. 羰基化合物与亚硫酸氢钠亲核加成反应实验的改进与探索

    Improvement and discussion of nucleophilic addition reactions of carbonyl compounds with sodium acid sulfite