Measurement of glass thickness and refractive indexbased on spectral interference technology

2021 ◽  
Author(s):  
kejuan xue ◽  
Jinsong Wang ◽  
yuanyuan zhao ◽  
zuojiang xiao
Keyword(s):  
Spectral Interference ◽  
Glass Thickness

Measurement method of glass thickness and refractive index based on spectral interference technology

2020 ◽  
Vol 49 (2) ◽  
pp. 213004
Author(s):  
赵媛媛 Zhao Yuanyuan ◽  
肖作江 Xiao Zuojiang ◽  
梁 旭 Liang Xu
Keyword(s):  
Refractive Index ◽  
Measurement Method ◽  
Spectral Interference ◽  
Glass Thickness

Development and Validation of Derivative Spectroscopic Method for Simultaneous Estimation of Cefadroxil and Probenecid

2014 ◽  
Vol 7 (1) ◽  
pp. 2350-2355
Author(s):  
Pratik S Mehta ◽  
Pratik R. Patel ◽  
Rajesh R Parmar ◽  
M M K Modasiya ◽  
Dushyant A Shah
Keyword(s):  
Spectroscopic Method ◽  
Spectral Interference ◽  
Synthetic Mixture ◽  
Simultaneous Estimation ◽  
Zero Crossing ◽  
First Order ◽  
Derivative Spectroscopy ◽  
Development And Validation ◽  
Crossing Point

A novel, simple, accurate, sensitive, precise and economical derivative spectroscopic method was developed and validated for the determination of cefadroxil and probenecid in synthetic mixture. First order derivative spectroscopy method was adopted to eliminate spectral interference. The method obeys Beer’s Law in concentration ranges of 4-36 μg/ml for cefadroxil and of 5-25 μg/ml of probenecid. The zero crossing point for cefadroxil and probenecid was 260 nm and 237.8 nm respectively in 0.1N HCl. The method was validated in terms of accuracy, precision, linearity, limits of detection, limits of quantitation. This method has been successively applied to synthetic mixture and no interference from the synthetic mixture’s excipients was found.   

scholarly journals The effect of the variation of glass thickness and angle tilt on the performance of the double cover solar water collector

2021 ◽  
Vol 1034 (1) ◽  
pp. 012084
Author(s):  
Muhammad Nizar Ramadhan ◽  
Rachmat Subagyo ◽  
Muhammad Haris Sa’dillah ◽  
Andy Nugraha
Keyword(s):  
Double Cover ◽  
Solar Water ◽  
Glass Thickness ◽  
Water Collector

Infrared Quantitative Analysis of Mixtures Containing Isopropenyl Stearate, Stearic Acid, Stearic Anhydride, and Mixed Stearic—Acetic Anhydride

1972 ◽  
Vol 26 (1) ◽  
pp. 96-99 ◽  
Author(s):  
Mary Jo Calhoun ◽  
Edward S. DellaMonica
Keyword(s):  
Acetic Anhydride ◽  
Stearic Acid ◽  
Relative Concentration ◽  
Ternary Systems ◽  
Spectral Interference ◽  
Complex Mixtures ◽  
Ratio Method ◽  
Baseline Method ◽  
Binary And Ternary Systems

A method for the determination of individual components of complex mixtures is presented. The technique used is based on ir-absorbance measurements for stearic acid at 1700 and at 935 cm−1 when the concentration range exceeds 0.50% wt/vol; for isopropenyl stearate at 1145 and at 865 cm−1; for stearic anhydride at 1030 cm−1 and mixed stearic-acetic anhydride at 1000 cm−1. The baseline method was used in all absorbance measurements. Absorbance-concentration relationships obeyed Beer's law from 0 to 2.0% wt/vol for most compounds; the exception being stearic acid (at 1700 cm−1), where linearity was limited to a maximum 0.50% wt/vol. Due to spectral interference between the two anhydrides at low concentration ratios, an empirical percent transmission ratio method was used to estimate the relative concentration of each. Binary and ternary systems were studied and the standard deviations of the differences between theoretical and calculated values indicate that this method is reliable.

Spectral Interference in Antimony Analysis with High Temperature Furnace Atomic Absorption

1978 ◽  
Vol 11 (10) ◽  
pp. 855-868 ◽  
Author(s):  
Hideo Yamada ◽  
Koichi Uchino ◽  
Hideaki Koizumi ◽  
Tamotsu Noda ◽  
Kazuo Yasuda
Keyword(s):  
High Temperature ◽  
Atomic Absorption ◽  
Spectral Interference ◽  
High Temperature Furnace ◽  
Temperature Furnace
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