UV-VIS Spectrophotometric Study of Selected Water Colours Currently in Use in Two Primary Schools Gwale Local Government Area of Kano State

• Author(s): Dr. Adedeji Olumide Adeniyi ; Salisu Muhammed Aliyu ; Hadiza Inuwa
• Paper ID: 1709622
• Page: 1297-1303
• Published Date: 31-07-2025
• Published In: Iconic Research And Engineering Journals
• Publisher: IRE Journals
• e-ISSN: 2456-8880
• Volume/Issue: Volume 9 Issue 1 July-2025

Abstract

Ultraviolet-visible spectroscopy of twelve (12) common water colours available in two primary schools in Gwale Local Government area of Kano state Nigeria were examined, the results showed that the ?max range between 726 nm and 408 nm and this tend to shift to longer wavelength which according to literatures associate increase in ?max with increase in conjugation in molecular structure of an organic compound. The experimental results also showed that the Molar Extinction Coefficient of the colours range between 3.5 x 103 to 2.9 x 104 with water colours (WC) 12 having the highest value. The value obtained although within the acceptable level ? 1 × 104 for most of the dyes is low. This is indicative of the reason for water colours being used in primary education where substantivity of the colours are not required due to a number of reasons, implication for primary education are also examined. However the molar extinction value of WC 2 and 3 could be increased to meet up with the acceptable value if need be. The UV-Vis spectroscopy of the WC studied here did not reveal the chemical structure of the dyes, hence, there is the need to carry out IR and GC-MS or NMR spectroscopy of the colours in order to determine their chemical structures.

Keywords

Water Colours, Molar Extinction Coefficient and Ultraviolet-visible Spectroscopy

Citations

IRE Journals:
Dr. Adedeji Olumide Adeniyi , Salisu Muhammed Aliyu , Hadiza Inuwa "UV-VIS Spectrophotometric Study of Selected Water Colours Currently in Use in Two Primary Schools Gwale Local Government Area of Kano State" Iconic Research And Engineering Journals Volume 9 Issue 1 2025 Page 1297-1303

IEEE:
Dr. Adedeji Olumide Adeniyi , Salisu Muhammed Aliyu , Hadiza Inuwa "UV-VIS Spectrophotometric Study of Selected Water Colours Currently in Use in Two Primary Schools Gwale Local Government Area of Kano State" Iconic Research And Engineering Journals, 9(1)