á857ñ ULTRAVIOLET-VISIBLE SPECTROSCOPYINTRODUCTIONUltraviolet-visible (UV-Vis) spectra are derived when the interaction between incident radiation and the electron cloud in achromophore results in an electronic transition involving the promotion of one or more of the outer shell or the bonding elec-...
usp 40 857 ULTRAVIOLET-VISIBLE SPECTROSCOPY 下载积分: 600 内容提示: á857ñ ULTRAVIOLET-VISIBLE SPECTROSCOPYINTRODUCTIONUltraviolet-visible (UV-Vis) spectra are derived when the interaction between incident radiation and the electron cloud in achromophore results in an electronic transition involving the ...
A light source may be used if the practiceis consistent between the materials under comparison.á857ñ ULTRAVIOLET-VISIBLE SPECTROSCOPYINTRODUCTIONUltraviolet-visible (UV-Vis) spectra are derived when the interaction between incident radiation and the electron cloud in achromophore results in an ...
被测特性是悬浮颗粒散射效应的间接测量,称为浊度。悬浮样品对光的任何吸收都会导致光强度的额外衰减(参见<857> Ultraviolet-Visible Spectroscopy和<1857> Ultraviolet-Visible Spectroscopy—Theory and Practice)。因此,确保被测材料不会吸收测量波长处的光非常重要。实际上,控制吸收和浊度测定的方程式是相同的(尽管衰减常...
1 安捷伦科技公司 实用解决方案通讯 第17卷,第1期 BRYANCRIST,科学事务经理,安捷伦科技有限公司 您的溶出样品是否满足USP <857>要求? USP通则章节<851>分光光度法和光散射法于2016年5月1日停用。 包括原子吸收光谱法、荧光光谱法、中红外光谱法、浊度法和紫外-可 见光谱法的几个新章节随之成为了官方方法。新的...
• METHOD B: RNA CONCENTRATION by ULTRAVIOLET SPECTROSCOPY (See Ultraviolet-Visible Spectroscopy <857>) This method is used to calculate RNA concentration in the bulk solution. The absorbance of a diluted RNA sample is measured at 260 nm and 280 nm, and the concentration is calculated using ...
<857>ULTRAVIOLET-VISIBLE SPECTROSCOPY紫外可见光谱 <861>SUTURES—DIAMETER缝线-直径? <871>SUTURES—NEEDLE ATTACHMENT缝线-穿孔实验 <881>TENSILE STRENGTH张力 <891>THERMAL ANALYSIS热分析 <905>UNIFORMITY OF DOSAGE UNITS制剂单位的含量均匀度 <911>VISCOSITY—CAPILLARYMETHODS黏度-毛细管法 <912>VISCOSITY—ROTATIONAL...
857 紫外——可见光谱法 ULTRAVIOLET-VISIBLE SPECTROSCOPY 858 拉曼光谱法 RAMAN SPECTROSCOPY 861 缝合线——直径 SUTURES—DIAMETER 871 缝合线——拉断测试 SUTURES—NEEDLE ATTACHMENT 881 拉伸强度 TENSILE STRENGTH 891 热分析法 THERMAL ANALYSIS 905 含量均匀度 UNIFORMITY OF DOSAGE UNITS 911 黏度——...
TESTS Spectrophotometric tests contribute meaningfully toward the identification of many compendial chemical substances. The test procedures that follow are applicable to substances that absorb IR and/or UV radiation (see Mid-Infrared Spectroscopy 〈854〉 and Ultraviolet-Visible Spectroscopy 〈857〉)....
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