“…These methods include; spectrophotometry [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18], spectrofluorimetry [19][20][21][22][23][24], titrimetry [25][26][27][28][29][30], chromatography [31][32][33][34][35][36][37][38][39][40][41][42], flow injection analysis [43][44][45][46][47], radio-immunoassay [48][49], electrochemical methods [50][51] and chemiluminescence methods [52]…”