亚硫酸氢钠
- 名sodium bisulfite
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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 .
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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 .
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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
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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 .
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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 ) .
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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 .
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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 .
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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 .
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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 .
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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 .
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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 .
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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 .
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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 .
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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 .
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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 .
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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 % .
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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 .
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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 .
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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 .
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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