• Dr P.Saraswathi
• Dr N.Vijayalakshmi
• P.Surya Nagi Reddy
• B.Vani Sree

Many methods are available for determination of the manganese in different matrices. For example there are, X-ray fluorescence, voltammetry, atomic absorption spectrometry (AAS) and UV-VIS spectro- photometry ,Atomic absorption spectrometry is a technique widely used for quantification of manganese, but the apparatus used is more expensive than UV-VIS) spectrophotometry,Colorimetric method, Periodatecolorimetry, persulphate spectrophotometry, Formaldoxime (FAD) method and Pyridylazonaphthol (PAN) etc. but all these methods are quite expensive and require expert handling. However this method is very simple and very easy to perform. But it doesn’t have its limitations. In this paper we describe an application of LED’s to the determination of Mn in Wine samples. A simple apparatus using LED’s as light source is described. The advantages of this apparatus are its low cost, versatility, and easy to build characteristics.

LED (light emitting diode), Mn, Grape wine, PD Amplifier, LF 356 IC.and digital multimeter.

"DETERMINATION OF MANGANESE IN GRAPE WINE USING LIGHT EMITTING DIODE AS LIGHT SOURCE.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.7, Issue 7, page no.1901-1907, July-2020, Available :http://www.jetir.org/papers/JETIR2007241.pdf

"DETERMINATION OF MANGANESE IN GRAPE WINE USING LIGHT EMITTING DIODE AS LIGHT SOURCE.", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.7, Issue 7, page no. pp1901-1907, July-2020, Available at : http://www.jetir.org/papers/JETIR2007241.pdf