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radiochemical purity
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  放化纯度
    Measurement of Radiochemical Purity of Na99mTcO4 with Thin_Layer Chromatography
    Na~(99m)TcO_4放化纯度的薄层色谱法测量
短句来源
    Analysis of the Radiochemical Purity of ~(18)F-FDG by HPLC
    HPLC法分析~(18)F-FDG放化纯度
短句来源
    131I-insulin was purified by Sephadex G15 with radiochemical purity more than 98%.
    经sePhade、G15柱分离后,13’I一胰岛素的放化纯度>98%。
短句来源
    After purifying, the tritiat-ed products was obtained with specific activity 36. 8 GBq/mmol. The radiochemical purity was over 95% by TLC and HPLC.
    纯化后,氚化产物的放射性比活度为36.8GBq/mmol,放化纯度经HPLC和TLC测定均>95%。
短句来源
    By the method 20% trichloroacetic acid precipitation, the radiochemical purity of the purified 125 I cerebrolysin is more than 90% and descent of radiochemical purity in a week is less than 5%.
    20%三氯乙酸沉淀法测定125I-脑活肽放化纯度>90%,1周内其放化纯度下降<5%。
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  “radiochemical purity”译为未确定词的双语例句
    Placed open to air for 24 h, the radiochemical purity of (188)~Re-TDD and (188)~Re-NEPTDD and (188)~Re-NEMMPTDD standed almost unchanged.
    一次反萃配合物脂水分配系数LogP_ow(~(188)Re-TDD))=1.403,LogP_(ow(~(188)Re-NEPTDD))=0.914,LogP_(ow(~(188)Re-NEMMPTDD))=0.904。
短句来源
    The labeling yield and the radiochemical purity of 125 I in the labeling to HPNS are 57.7%±18.9% and 62.4%±7.5%, respectively.
    首先用125I-NaI标记HPNS,标记率为(57.7±18.9)%,然后以pH8.5的硼酸缓冲液为标记介质,用125I-HPNS联接IL-8。
短句来源
    Tc m CACPPA is prepared by the reduct ion of stannous chloride with Na 99 Tc mO - 4 in aqueous soluti on a t pH8.5 ̄9.5,the labeling yield and radiochemical purity are over 90% determined by TLC and HPLC.
    在pH8.5~9.5的水溶液中,采用氯化亚锡还原法制备99Tcm-CACPPA,TLC和HPLC检测其标记率和放化纯均大于90%。
短句来源
    METHOD OF DETERMINATION OF RADIOCHEMICAL PURITY OF GALLIUM-67 CITRATE INJECTION
    枸椽酸镓-67注射液放化纯的测定
短句来源
    The radiochemical purity of two neurotensin analogs was both above 98% and kept the level after 24 hours in 4°C refrigerator. (§) in vitro binding assay: the specific activity of 125I-NT2 was 9.71 *1012 Bq/mmol in saturable experiment.
    以NT1对~(125)I-NT2进行竞争取代反应,用prism4.0软件分析数据,得出IC_(50)值。
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  radiochemical purity
The optimal amounts of DMAE (25 μl in 50 μl of ethanol) and tC18 (0.1 g) were found, providing a high radiochemical yield of the labeled choline (85%, corrected for radioactive decay) and radiochemical purity of more than 99.5%.
      
With 166Ho-albumin microspheres as example, an algorithm was developed for evaluation of the radiochemical purity of the preparation.
      
It was found that the radiochemical purity of the preparation, which is primarily determined by impurities of rare-earth elements, can be estimated from the content of 152mEu.
      
A simple "dry" procedure was developed for isolation of 186Re with a yield no less than 85% and radiochemical purity no worse than 99.99%.
      
The radiochemical purity of a 131I preparation (the iodide fraction) was determined by ascending paper chromatography using a mixture of sodium iodide, sodium iodate, and sodium carbonate as a carrier and aqueous methanol as an eluent.
      
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Isotopic exchange reactions of sulfur-containing compounds (i. e. carbon disulfide, thiophosphoryl chloride, ethyl phosphonothionic dichloride, phenyl phosphonothionic dichloride, diethyl phosphorochloride thionate, triethyl phosphorothionate, diethyl disulfide, ethyl mercaptan) with ~(35)S in the presence of aluminum chloride were studied. With the first four compounds the reactions proceeded rapidly and smoothly, giving chemical yields of 70~95%. Radiochemical purity of these four products was identified...

Isotopic exchange reactions of sulfur-containing compounds (i. e. carbon disulfide, thiophosphoryl chloride, ethyl phosphonothionic dichloride, phenyl phosphonothionic dichloride, diethyl phosphorochloride thionate, triethyl phosphorothionate, diethyl disulfide, ethyl mercaptan) with ~(35)S in the presence of aluminum chloride were studied. With the first four compounds the reactions proceeded rapidly and smoothly, giving chemical yields of 70~95%. Radiochemical purity of these four products was identified by the preparation of derivatives. With a high ratio of sulfur compound to ~(35)S, the radiochemical yield could approach the chemical yield. This method proved to be a good method for preparing ~(35)S labelled compounds. Compounds containing both P=S and R—O—P linkages, such as diethyl phosphorochloride thionate and triethyl phosphorothionate, exchanged only slightly, probably as a result of the side reaction of R—O—P with aluminum chloride. Diethyl disulfide exchanged about 12%, and ethyl mercaptan did not exchange at all.In connection with the mechanism of catalytic action of aluminum chloride, the following phenomena were observed: A complete exchange could be effected when carbon disulfide was heated at 100℃ for 1 hr or thiophosphoryl chloride heated at 80℃ for 20 min. These reactions proceeded with color change (when darkish aluminum chloride was used, no color change could be observed indicating no exchange). As it seemed quite possible that these reactions proceeded through a radical mechanism, an ESR study was undertaken. Signals were observed, and both showed three lines, with g values 2.0039, 2.0052, 2.0072 (DPPH used as a standard) for thiophosphoryl chloride and 2.0046, 2.0065, 2.0067 for carbon disulfide, We suppest that aluminum chloride as a strong Lewis acid might attack and open the eight membered ring of elemental sulfur, and the linear chain thus formed suffered homolytic fission and provided sulfur radicals which could attack and exchange with the sulfur atom of other sulfur compounds.

研究了~(35)S与C=S、P=S、C—S—S—C、C—SH等类型硫化物用三氯化铝催化的交换反应。二硫化碳、硫代磷酰氯、乙基硫代膦酰二氯、苯基硫代膦酰二氯等用此法交换,均得到良好的化学产率与放射产率。二硫化碳或硫代磷酰氯与三氯化铝、硫共热,显示三个顺磁共振峰,因此初步推测交换反应为自由基反应。含有R—O—P键的P=S类化合物与三氯化铝发生副反应,故未能很好交换。二乙基化二硫的交换率颇低,乙硫醇则无交换。

The adsorption phenomena of trace ionic gold in paper chromatography were investigated. The paper chromatography with acetone-water-hydrochloric acid (7:2:1) as solvent, which is being used as the standard method for controlling radiochemical purity of colloidal gold-198 injection in pharmacopoeia of many countries, was found to give lower analytical value of ionic gold which was seriously adsorbed on the chromatographic paper.We found that by immersing the chromatographic paper previously in a 2% NH4C1...

The adsorption phenomena of trace ionic gold in paper chromatography were investigated. The paper chromatography with acetone-water-hydrochloric acid (7:2:1) as solvent, which is being used as the standard method for controlling radiochemical purity of colloidal gold-198 injection in pharmacopoeia of many countries, was found to give lower analytical value of ionic gold which was seriously adsorbed on the chromatographic paper.We found that by immersing the chromatographic paper previously in a 2% NH4C1 solution, the adsorption of ionic gold on the paper can be eliminated. By this method the content of ionic gold obtained agrees with the result of extraction-spectrophotometry, and the product quality can also be controlled effectively.This method is recommended as the pharmacopoeia method for the determination of ionic gold in the colloidal gold-198 injection.

本文研究了纸色层分析中微量金离子的吸附现象;找出了在许多国家药典中关于用纸上色层法(以7:2:1的丙酮-水-盐酸为溶剂)控制放射性胶体金-198注射液放化纯度时所存在的问题:由于微量金离子在纸上有严重的吸附,使金离子含量的分析值大为偏低。 本文通过实验,进一步提出预先用2%氯化铵溶液浸泡色层纸的方法,消除了金离子的吸附。本法所得金离子含量的色层分析结果与萃取分光光度法符合,可有效地控制产品质量。

In this paper a selective adsorption and desorption on copper based platinum adsorbent (CBPA) of radioiodine is studied.I- can be adsorbed on CBPA in the media like sulfuric, citric or tartaric acid at pH ≤6.2. The adsorption capacity is-0.7 mg/cm3 CBPA (150-200 mesh) in the usual cycles. In the presence of enough Na2SO3, the adsorption efficiency is≥99.95% before the break- through. The adsorption takes place in<3 seconds, permitting a flow rate of up to 90 ml/cm2·min, while in elution, the flow rate should...

In this paper a selective adsorption and desorption on copper based platinum adsorbent (CBPA) of radioiodine is studied.I- can be adsorbed on CBPA in the media like sulfuric, citric or tartaric acid at pH ≤6.2. The adsorption capacity is-0.7 mg/cm3 CBPA (150-200 mesh) in the usual cycles. In the presence of enough Na2SO3, the adsorption efficiency is≥99.95% before the break- through. The adsorption takes place in<3 seconds, permitting a flow rate of up to 90 ml/cm2·min, while in elution, the flow rate should not exceed 10ml/cm2·min to avoid longer tailing.The elution efficiency depends greatly on two factors: the amount of I-adsorbed and the concentration of NaOH in the eluant. Through the 1.5cm3 column, for>80μg I-and with 10-15 Vc of≥0.3 N NaOH, the recovery is nearly quantitative.Na+, K+, Cs+, Cu2+, Zn2+, Fe2+, AP+, Sb(Ⅲ), and SO2 3+, PO3 4-, TeO2 4-, citrate, tartarate etc., and NO3-, Cl- as well (in the pH range of 4-5.5 and with enough Na2SO3 present), exhibit no apparent effect on either adsorption or desorption of I-. The presence of large quantity of Br- interferes both processes. The separation( or decontamination) factors for Al, Te(Ⅵ), Sb(Ⅲ) are>103-105.In 0.1 N NaOH eluate, the contents of absorbent material (Cu and Pt) and other impurities are all<1 ppm, and the radiochemical purity of radioiodine in the product is≥99.9%, with no reducing agent in it.The column can be used repeatedly. A dose of 1 × 108rads of 60Co γ-rays has no effect on the effectiveness of the CBPA.This inorganic selective adsorption method might find applications in many fields.

铜基铂在 pH≤6.2的多种酸性介质中,对 I~- 都有很高的吸附效率(>99%),吸附速度快、选择性高。每立方厘米吸附剂的吸附容量约为0.7mg碘。淋洗收率取决于吸附碘量及淋洗碱液浓度,在 1.5cm~3的柱上,对>80μg的碘,用 10—15个柱体积的 0.3NNaOH淋洗,可接近定量回收。产品液放化纯度≥99.9%;化学纯度也高。铜基铂耐辐照性能良好,可重复使用。适用于多居里级放射性碘的制备等多种用途。纯铜粉对I~-的吸附和解吸规律与铜基铂相同,唯吸附容量、抗干扰等性能较差。

 
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