02261nam a2200241 a 4500 vtls000075702 KUKTEM 20251114204555.0 131022t2012 my a f m 000 0 eng d THE0005525(Local) 201905161045 hanafiah 201310221134 Fida UMP QD96.15 .N87 2012 rs Bc. Siti Nur Aishah Ahmad Shah Chemical concentration calculation based on spectrogram / Siti Nur Aishah Ahmad Shah Kuantan, Pahang : UMP, 2012 xii, 40 p. : ill. (some col.) ; 30 cm. + 1 CD-ROM Project paper (Bachelor of Electrical Engineering (Electronics)) -- Universiti Malaysia Pahang - 2012 Bibliography : p. 40 In this project, the chemical concentration identified based on spectrogram. In chemistry, concentration is defined as the abundance of a constituent divided by the total volume of a mixture. The term concentration can be applied to any kind of chemical mixture, but most frequently it refers to solutes in homogeneous solutions. Meanwhile, spectrogram is a time-varying spectral representation (forming an image of graph) that shows how the spectral density of a signal varies with time. It is an instrument used to measure properties of light over a specific portion of the electromagnetic spectrum, typically used in spectroscopic analysis to identify materials. The purpose of this project was to develop the systems that can identify the concentration of a compound by using spectrogram. Using MATLAB, the chemical concentration can calculated based on the compound of the solution. By using Acrylic acid as an example; which the simplest unsaturated carboxylic acid which has double bond and carboxyl group in C3 one molecule with the formula CH2=CHCOOH, we can determine the concentration percentages of the compound that form acrylic acid. Based on the graph that plotted by using MATLAB, the area under graph calculate. With the area, we can calculate the concentration directly based on the data from HPLC-high performance liquid chromatography. Infrared spectroscopy 0 0 0 1 20000 20000 2019-09-04 0 QD96.15 .N87 2012 rs Bc. 0000071249 2019-09-04 00:00:00 1 2019-09-04 PSM 0 0 0 1 20000 20000 2019-09-04 0 CD 6722 | QD96.15 .N87 2012 rs Bc. 0000071250 2019-09-04 00:00:00 1 2019-09-04 PSM VIRTUA40 4351 4357 VTLSSORT0080*0200*0400*0900*1000*2450*2600*3000*5020*5040*5200*6500*9992