Home-Made Micro Valve for Determining Malachite Green Dye by Flow Injection Analysis

Amal Saadoon Majeed (Sub-Department of Basic Science , College of Nursing, University of Kufa, Kufa, Iraq)
Ahmed Saleh Farhood (Department of Chemistry, College of Science, University of Babylon, Babylon, Iraq)
Luma Ahmed Mohammed Ali (Department of Chemistry, College of Science, University of Babylon, Babylon, Iraq)
Dakhil Nassir Taha (Department of Chemistry, College of Science, University of Babylon, Babylon, Iraq)

Indonesian Journal of Chemistry
Vol 17, No 2 (2017)

The research is included studying and designing micro flow injection system which is characterized with rapidity, simplicity, and low cost for the determination of green malachite dye. The study of flow rate of carrier stream, repeatability, dispersion coefficient, and calibration graph are conducted. It is found that the optimum conditions for the determination of mentioned dye are flow rate 4.200 mL/min, sampling rate 102 sample/h, limit of detection 0.05 ppm, linear range (0.05-18.00) ppm with linearity (R2=0.9700), RSD is 0.355, the repeatability for seven successive injections is studied for the two concentrations 5 ppm and 12 ppm, and the dispersion coefficient values are 1.73 and 1.28 at the two concentrations 2 ppm and 9 ppm respectively.