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- gas reference substance 气体标准物质
- Objective To establish a preparative method for rupestonic acid reference substance from Artemisia rupestris by HPLC. 目的研究高效液相色谱制备一枝蒿酮酸对照品的方法。
- Object To establish an isolation method of theanine reference substance by preparative HPLC. 目的研究制备型高效液相色谱分离纯化茶氨酸对照品的方法。
- The product of suavissimoside R1 can be used as reference substance for analysis. 悬钩子皂苷R1产品可用做分析方法的对照品。
- Conclusion: It provides the basis for purification and standardized of curcumol reference substance . 结论： 为莪术醇对照品的标化和提纯提供了依据。
- Preparation, homogeneity, stability and certification of reference substance of bornyl acetate were studied. 摘要研究了乙酸龙脑酯标准样品的制备、均匀性和稳定性及其定值方法。
- British Pharmacopoeia method is more accurate because of its using the reference substance as a calibration. 英国药典方法更为可靠，关键是采用了标准品进行校正计算。
- Preparation,homogeneity,stability and certification of reference substance of bornyl acetate were studied. 研究了乙酸龙脑酯标准样品的制备、均匀性和稳定性及其定值方法。
- Conclusions The preparation techniques are simple and high yield, can be used for preparing the reference substance of platycodin-D. 结论该工艺简单，收率高，可用于桔梗皂苷D标准品的制备。
- RESULTS:The test sample was similar to reference substance in that the TLC spots at the corresponding place were of the same color. 结果:制剂中被测成分色谱分别在与对照品色谱对应的位置上显相同颜色的斑点。
- RESULTS: The indirubin extracted by this method was of high purity (97.78%).The sample purity was similar to reference substance one((98.01%)). 结果:此工艺所得靛玉红纯度为97.;78%25;且样品与对照品纯度相接近;NMR和IR图谱相同。
- It introduces the method of preparation,research of performance and calculation of uncertainty of mixed gas reference material of tetrafluoromethane,nitrous oxide and hexafluoride in helium. 论述了氦中四氟甲烷、氧化亚氮和六氟化硫混合气体标准物质的制备方法、性能考察、不确定度计算,经与国内外同类标准物质比较,证明量值准确可靠、方法可行。
- An HPLC method was established for the determination of indirubin to study the solubilities of the solid system with indirubin as a reference substance. 结果共研磨技术和共沉淀法有效提高了靛玉红的表观溶解度,不同载体研究表明共研物中亲水载体的羟基对改善难溶性药物的溶解度有着重要的影响。
- Methods: Isovitexin was used as reference substance to evaluate the chromatogram of 10 samples from different regions and 12 samples collected in different months. 方法:以异牡荆苷为对照品,测定不同产地的10个样品以及不同采收期的12个样品的色谱图谱。
- Schmidt ver.Mandshuricum(Maxim.) Kitag contained aristolochic acid A or not by HPLC and MS,and the difference in the reference substance and the sample solution was compared. 方法:采用HPLC与MS分别检测北细辛中的马兜铃酸A,并比较对照品和供试品的检测限。
- Article 2 The fuel gas referred to in these Regulations means the gas fuel such as artificial coal gas, natural gas, and liquefied petroleum gas (hereinafter called LPG. 第二条本条例所称燃气，是指人工煤气、天然气、液化石油气（以下简称液化气）等气体燃料。
- Deep source gas refers to inorganic genetic gas or abiogenic gas which comes from deep crust or upper mantle, and has apparent geology and geochemistry characteristics. 深源气是指来自地壳深部或上地幔的无机成因天然气或称非生物成因天然气，它具有明显的地质地球化学特征。
- Production Capacity of Gaswork Gas refers to the actual comprehensive production capacity of the urban gasworks in gas generation, purification and delivery. 人工煤气生产能力 指城市煤气厂制气、净化、输送等环节的综合实际生产能力。
- The drug control institution affiliated to the drug regulatory agency of the State Council is responsible for standardizing the National Drug Standard Substance and Reference Substance. 国务院药品监督管理部门的药品检验机构负责标定国家药品标准品、对照品。
- RESULTS The synthetical sanagole was in comformity with Japanese reference substance in physical chemistry and spectrum characteristics,and had significant radiosensitive effect on tumor cells. 结果:合成得到的沙纳唑与日本对照品在理化性质及光谱特征上完全一致,对肿瘤细胞的增敏作用显著。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
