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Voyager absolute far-ultraviolet spectrophotometry of hot stars
, 1982Voyager observations in the 912-1200 A spectral region are used to indirectly intercompare absolute stellar spectrophotometry from previous experiments. Measurements of hot stars obtained by the Voyager 1 and 2 ultraviolet spectrometers show considerably
J. Holberg +3 more
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Determination of nitrate in raw, potable and waste waters by ultraviolet spectrophotometry
, 1979A method is proposed for the determination of nitrate in raw, potable and waste waters using ultraviolet spectrophotometry. The use of an activated carbon filter at an elevated pH eliminates interference from organic matter, i.e., substances commonly ...
P. Rennie, A. Sumner, F. B. Basketter
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Unusual Applications of Ultraviolet Spectrophotometry
Applied Spectroscopy, 1952Ultraviolet spectrophotometry has demonstrated its usefulness in application to problems of identification and qualitative analysis, molecular structure studies, and quantitative analysis, even of multi-component systems. The ability to observe the spectra of ions in solution has been of great usefulness in molecular structure investigations and in the
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, 1992
Background-correction methods have been developed for the determination of caffeine in beverages, coffee and tea by second-derivative ultraviolet spectrophotometry. The second derivatives of caffeine were measured at 298.6 nm.
O. Lau +3 more
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Background-correction methods have been developed for the determination of caffeine in beverages, coffee and tea by second-derivative ultraviolet spectrophotometry. The second derivatives of caffeine were measured at 298.6 nm.
O. Lau +3 more
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Wavelength Anomalies in Ultraviolet-Visible Spectrophotometry
Applied Spectroscopy, 2012Spectral scans of atomic line emission sources with a Shimadzu UV2101PC spectrophotometer show that the nominal wavelength depends upon the instrumental slit width, the wavelength sampling interval, and for some slit widths, also on the specified spectral range.
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The determination of nitrate in soil solutions by ultraviolet spectrophotometry
, 1967Ultraviolet spectrophotometric analysis has been applied to the determination of nitrate nitrogen over the 0·5 to 10 p.p.m. range in soil solutions and perfusates in the absence of organic matter, and over the 5 to 50 p.p.m. range in its presence.
P. A. Cawse
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The Determination of β-Cyclodextrin by Ultraviolet Spectrophotometry
Microchemical Journal, 1998Abstract In the presence of appropriate amounts of β-cyclodextrin, the absorbance(A) of procaine solution at λmax(290nm) increases and the ΔAappears to have a linear relationship toCβ-CDwith regression coefficient (r) 0.9987. This paper proposes ultraviolet spectrophotometry (UVSM) for determining β-CD.
Gu Jun, Pan Jinghao, Zhang Yong
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Analytical and Bioanalytical Chemistry, 2020
Zackery R. Roberson +2 more
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Zackery R. Roberson +2 more
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[Determination of zopiclone in serum by ultraviolet spectrophotometry].
Zhonghua lao dong wei sheng zhi ye bing za zhi = Zhonghua laodong weisheng zhiyebing zazhi = Chinese journal of industrial hygiene and occupational diseases, 2013目的 建立血清中佐匹克隆定性、定量测定的紫外分光光度法,为临床佐匹克隆中毒提供诊疗依据.方法 取0.5 ml血清加二氯甲烷2.0 ml充分震荡萃取,静置5 min,以4000 r/min离心,取二氯甲烷层于另一试管中氮气吹干,加0.1 mol/L盐酸溶液200μl混匀.取50μl于微量比色池中紫外扫描.结果 血清中佐匹克隆最大吸收峰(304±1) nm,浓度在1.0～30μg/ml范围内呈线性关系,回归方程y=0.0353x+0.0059,相关系数为0.9995,方法回收率为85.8％～102.5％;相对标准偏差(RSD)为:2.9％～4.5％.日内、日间RSD分别为2.73％～5.04％和2.97％～4.74％,最低检出浓度:0.5 μg/ml.结论 该方法操作简便、分析快速,结果准确 ...
Zi-ru Chen, Li-ming Chen, Ming Wu
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Determination of Phenobarbital and Phenytoin in Serum by Ultraviolet Spectrophotometry
Scandinavian Journal of Clinical & Laboratory Investigation, 1967A modification of the method of Svensmark & Kristensen for the spectrophotometric determination of phenobarbital and phenytoin in serum has been described. By means of small alterations the method was made more suitable for routine use. It was shown that recovery of both drugs was 7–9 per cent higher when known amounts were added to water instead of ...
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