ABSTRACT
FADIA ADINDA. Development and Analytical Performance Measurement of
Portable Spectrophotometer Using Tartrazine Dyes Solution. Supervised by RUDI
HERYANTO and MOHAMAD RAFI.
A rapid technology development on this digital era, provide ways to develop
a portable spectrophotometer using common electric components that are simpler,
cheaper, and easy to construct. The aim of this study is to develop a portable
spectrophotometer using white LED (Light Emitting Diode) lamp as light source,
web camera as a detector, DVD (Digital Versatile Disc) as diffraction grating, and
offline software Thereminospectrometer as data acquisition system. The analytical
performance is measured by linearity parameter using tartrazine dye solution. The
data obtained from our portable spectrophotometer were compared to a commercial
spectrophotometer Hitachi U-2800. Linearity test of portable spectrophotometer
shows linearity with coefficient of determination value (R2) equal to 0.9963. The
result shows a similar value compared to commercial spectrophotometer Hitachi U2800. Literature review confirm that a portable spectrophotometer is not only
applicable for analysis, but also for educational occasions.
Keywords: portable spectrophotometer, tartrazine, visible spectrophotometer, web
camera.