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氧瓶燃烧     
相关语句
  oxygen-flask combustion
     The fluoride contents in seven kinds of filter cigarettes were determined quickly by oxygen-flask combustion and ion-selective electrode technique. The relative standard deviation and the recovery ((?) ±s) of this method were 4.48%(n = 5)and (102.1 ±4.2)%(n = 5),respectively.
     采用氧瓶燃烧和离子选择电极技术快速测定了7种过滤嘴香烟的氟含量,其相对标准偏差和回收率分别为4.48%(n=5)和(102.1±4.2)%(n=5)。
短句来源
     Determination of the Monopril in Oxygen-Flask Combustion by Spectrophotometry with Malachite Green-Ammonium Phosphomolybdate-PEG
     氧瓶燃烧-孔雀绿-磷钼酸铵-PEG光度法测定蒙诺
短句来源
     Quick Determination of Copper and Zinc in Human Hair by Oxygen-flask Combustion Anodic Stripping Voltammetry
     氧瓶燃烧-溶出伏安法快速测定人发中铜和锌
短句来源
     Oxygen-flask Combustion Method of Determination of the Total Phosphorus in Cotton Seed Using Haematoxylin as Indicator
     氧瓶燃烧苏木精为指示剂测定棉籽中的总磷
短句来源
     Quick Determination of Fluoride in Human Hair with Oxygen-flask Combustion and Ion-Selective Electrode
     氧瓶燃烧-离子选择电极快速测定人发中的氟
短句来源
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  oxygen flask combustion
     Methods:By oxygen flask combustion,k selenocarrageenan in k selenocarrageenan capsules can produce inorganic selenium,which combined with 2,3 diaminonaphthalene to form 4,5 benzopiaseleol,which in turn was determined by ultraviolet spectrophotometry.
     方法 :硒卡拉胶经氧瓶燃烧后生成无机硒 ,与 2 ,3-二氨基萘络合成 4,5 -苯并苯硒二唑 ,采用紫外分光光度法测定。
短句来源
     ASSAY OF N0RFLOXACIN CAPSULE BY OXYGEN FLASK COMBUSTION METHOD
     氧瓶燃烧法测定诺氟沙星胶囊的含量
短句来源
     Potentiometric method for bromine in brominated epoxy resin by oxygen flask combustion
     氧瓶燃烧电位滴定溴化环氧树脂中的溴
短句来源
     Modification of the Method for Determination of Total Mercury in Coal by Oxygen Flask Combustion
     氧瓶燃烧法测定煤中痕量汞的改进
短句来源
     Conclusions: The contents of fluoroquionolone in material and preparations by means of oxygen flask combustion and fluorine ion-selective electrode are comply with by Chinese Pharmacopoeia (2000 edition, the second part) method.
     结论:用氧瓶燃烧-氟离子选择电极法测定四种氟喹诺酮类药物原药和制剂的含量与药典法(诺氟沙星、盐酸环丙沙星、依诺沙星)或文献法(司帕沙星药典未收载)比较,结果表明该方法简便、快速、准确,可以作为这类药物原药和制剂含量测定的通用方法。
短句来源
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  oxygen bottle combustion
     The sulfur in organic compounds was decomposed and turned into SO by oxygen bottle combustion. In alkaline solutions the absorbence of methethymol (MTB) is proportional,to sulfate concentration at 460 nm wavelength but the absorbence of barium-MTB complex is inversely proportional to sulfate concentration at 600nm (or 610 nm) wavelength. The calibration graph is linear over the range 4 to 25 mg/l for sulfate.
     提出用氧瓶燃烧-光度法来测定有机物中硫含量的定量分析方法,在低硫酸根浓度范围内(4~25mg/l),在浓碱条件下MTB(甲基百里酚蓝)的吸光度与硫酸根浓度在460nm波长处呈正相关,而在600nm(或610nm)处Ba-MTB络合物的吸光度与硫酸根浓度呈负相关。
短句来源
     TEST METHOD FOR TRACE MERCURY IN COAL BY THE OXYGEN BOTTLE COMBUSTION/NON-FLAME ATOMIC ABSORPTION SPECTROPHOTOMETRY
     氧瓶燃烧法与冷原子吸光光度法测定煤中痕量汞
短句来源
     The reliability of oxygen bottle combustion disposing coal was studied.
     同时,对氧瓶燃烧法处理煤样的可靠性进行了考察。
短句来源
  oxygen flask method
     Determination of Organic Iodine Concentration in Drugs by Oxygen Flask Method and HPLC
     氧瓶燃烧——高效液相色谱法测定药物中有机碘含量
短句来源
     The method for the determination of phosphorus content in phosphoreted flame retardant is present in this article. Organophosphorous compound is transferred into phosphorated oxide using oxygen flask method under the existion of combustion adjuvant and oxidation accelerator. After the phosphorated oxide is absorbed with dilute sulfuric acid, the ammonium metavanadate and ammonium molybdate are added into the absorption solution to form yellow solution.
     叙述了含磷阻燃剂样品在助氧化剂、助燃剂存在下 ,氧瓶燃烧使有机磷转化为磷的氧化物 ,以稀硫酸吸收 ,然后加入偏钒酸铵、钼酸铵形成黄色溶液 ,用分光光度法测定磷含量的方法 .
短句来源
     Their contents of sulfur were determined by oxygen flask method, and their weight average molecular weight (Mw) and the distribution width of molecular weight (Mw/Mn) were determined by high performance gel permeation chroma-tography (HPGPC) respectively, and their 1R spectrum and 13 C-NMR spectrum were measured in this paper also.
     对制得的各化合物分别采用氧瓶燃烧法测定了硫含量(S%),采用HPGPC法测定了重均相对分子质量和相对分子质量分布宽度,并对各化合物的红外光谱(IR)和13C-NMR核磁共振图谱进行了分析。
短句来源
     Their contents of sulfur were determined by oxygen flask method, and their weight average molecular weight and the distribution width of molecular weight were determined by high performance gel permeation chromatography (HPGPC) respectively, and their IR spectrum and 13 C NMR spectrum were measured in this paper also.
     对各化合物分别采用氧瓶燃烧法测定了硫含量 (S % ) ,采用HPGPC法制定了重均相对分子质量和相对分子质量分布宽度 ,并对各化合物的红外光谱 (IR)和13C NMR核磁共振图谱进行了分析
短句来源

 

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      oxygen-flask combustion
    Three polarographic micro-methods are described for the determination of sulphur in organic compounds after oxygen-flask combustion.
          
    Decomposition is carried out either by oxygen-flask combustion or by wet digestion with sulphuric and nitric acids.
          
    An electrical assembly for the oxygen-flask combustion of lubricants and similar petroleum products is described.
          
      oxygen flask combustion
    After oxygen flask combustion scintillation samples often show an increase in counting rates for several hours.
          
    Oxygen flask combustion and ion-chromatographic analysis has been applied to the determination of P, Cl and S in annual growth rings of Pinus pinea L.
          
    A microwave digestion procedure and an oxygen flask combustion procedure were developed for the determination of cadmium and lead in plastic materials.
          
    Overall, microwave digestion as well as oxygen flask combustion are time saving and cost-effective dissolution procedures to supervise the legal cadmium limit in plastics.
          
    Polarographic microdetermination of sulphur in organic compounds after oxygen flask combustion
          
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      其他


    In the present paper, the following five systematic steps for microidentification of organic compounds have been studied: 1. Detection of elements: A rapid and simple micro-method was developed for the detection of fourteen important hetero-elements(N, F, Cl, Br, I, S, P, As, Sb, Hg, Si, Sn, B, Fe)in organic compounds. The sample having been broken down by Schoniger oxygen-flask combustion, the resulting ions were separated and detected by using Weisz ring oven technique. Several color reactions for the detection...

    In the present paper, the following five systematic steps for microidentification of organic compounds have been studied: 1. Detection of elements: A rapid and simple micro-method was developed for the detection of fourteen important hetero-elements(N, F, Cl, Br, I, S, P, As, Sb, Hg, Si, Sn, B, Fe)in organic compounds. The sample having been broken down by Schoniger oxygen-flask combustion, the resulting ions were separated and detected by using Weisz ring oven technique. Several color reactions for the detection of nitrate, sulfate and halogen ions on ring oven have been modified to improve the selectivities as well as sensitivities. The detection limits for elements were 0.01 to 1μg in sample weighing 50—500 wg(cf Table 1, 3, 4, 5 in the Chinese text). 2. Determination of physical constants: Triphenyl silanol(m. p. 155.5℃, K=15)and triphenyl phosphine(m. p.79.5℃, K=12)have been proved to be suitable solvents in micro Rast cryscopic molecular weight determination for elemento-organic compounds. 3. Classification tests: The traditional classification by solubility has been modified for micro-analysis in two respects:(i)two new in. dicators were employed to classify the acids and bases instead of testing the solubilities in reaction solvents. Our indicators seemed to be more sensitive than those suggested by Davidson(cf. Table 8—10);(ii)Oxygen-containing compounds were detected by Ferrox test instead of testing solubility in conc. sulfuric acid. In order to increase the sensitivity of detection, the micro-technique of using ion-exchanger or silica gel grains as reaction media was employed. 4. Detection of functional groups: Based on the principle of ring-oven technique, a more simply constructed“Pinch-Clamp Line Oven”was designed. Some common organic functional groups(acid anhydrides, acid halides, alcohols, aldehydes, amines, amino acids, carbohydrates, carboxylic acids, esters, glycols, ketones, phenols)have been detected with this specific tool.(see Table 11). 5. Preparation of derivatives: The specific reagents for identifying aldehydes, 1,2-bis anilino ethane(DAE)and 1,2-bis(p-bromo benzyl amino)ethane(DBE)heve been studied. Owing to its higher molecular weight and the lower solubilities of its aldehyde derivatives, DBE seemed to be more suitable than DAE for the micro-iden-ti fication of water-insoluble aldehydes in organic mediums. Aldehyde derivatives prepared from the two reagents could be charact-erized not only by their sharp melting points(see Table 12)but also by their well-defined crystalline forms. Thirty-two photomic-rographs of these crystalline derivatives have been taken for this purpose(see fig 2—33). The neutral equivalent weights of DAE and DBE derivatives determined by non-aqueous titration will be added as further aid in identi-fication. A micro-manipulation for titration was developed.

    1.用氧瓶燃烧法与环炉技术相结合检定了有机化合物中14种重要杂元素,检出限度为0.01—1微克,样品取量50微克至500微克。 2.提出了用三苯基硅甲醇(K=15)及三苯基膦(K=12)作为Rast法测定分子量的溶剂,适合于测定某些元素有机化合物的分子量。 3.用两种灵敏度较高的指示剂于分组试验,并放进了硫氰酸铁试氧法,使分组系统与习用已久的溶解度分组系统相同,而试验方法适合于微量分析。 4.用线炉技术检定了12种重要有机功能团。 5.合成了1,2-二(对溴苄氨基)乙烷作为鉴定醛类的专属性试剂,用它制备了二十余科醛类衍生物,熔点一般分布在75—210℃之间。并摄制了这些衍生物与用1,2-二苯氨基乙烷制得的醛类衍生物共三十余种结晶的显微照片,进行化学显微鉴定。提出了微量非水滴定测定这些衍生物中和当量的方法。

    ~~

    氧瓶燃烧法测定有机物中的卤素,具有仪器简单、结果准确、操作方便等一系列优点,在微量分析中已经得到广泛采用。本文研究了它在半微量测定聚氯乙烯等的氯含量的应用,确定了分析误差小于±0.3%的测定方法。提出了用汞液滴定法测定氯离子时,采用1:1的溴酚蓝(浓度0.05%)、二苯卡巴腙(浓度O.5%)组成的指示剂;它具有明显、突跃的滴定终点。

    This paper presents a simple and accurate method for indirect complex-

    有机磷化合物中的磷含量可以先将样品放入氧瓶燃烧分解,再以Pr(NO_3)_3或Nd(NO_3)_3作为PO_4~(3-)的沉淀剂,并用EDTA回滴过量的Pr~(3+)或Nd~(3+)来测定。文中还介绍了消除氟,硫,硼干扰的简单方法。测定误差为±0.20%。

     
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