Ultraviolet and light absorption spectrometry

Ultraviolet and light absorption spectrometry

“…absorption spectrometry from December 1985 through December 1987, primarily as documented in the Ultraviolet & Visible Spectroscopy section of CA Selects, and extends the series of reviews in this area sponsored by Analytical Chem-istry initiated in 1945 for light absorption spectrometry (1)(2)(3), ultraviolet absorption spectrometry (4-8), and ultraviolet and light absorption spectrometry (9,10). As in previous years this review has been divided into sections on chemistry, physics, and applications.…”

Ultraviolet and Light Absorption Spectrometry

“…Papers reporting on simultaneous determinations include acetaminophen plus orphenadrine citrate, ibuprofen, or chlorzoxazone (second) (216); amoxycillin and dicloxacillin (second; 308.5 nm, 275 nm; 20-200 /tg/mL, 20-140 /tg/mL) (217); caffeine, theobromine, and theophylline (first and second) (218); enalapril maleate and hydrochlorothiazide (second) (219); ephedrine hydrochloride and nikethamide (second; 256.7 nm, 261.1 nm) (220); notriptyline hydrochloride and perphenazine (fourth; 239.6 nm, 268.8 nm) (221); paracetamol and mephenoxalone (third; 239.4 nm, 249.8 nm; 5-20 /tg/mL, [5][6][7][8][9][10][11][12][13] /tg/mL) (222); salicyladehyde, 3-hydroxybenzaldehyde, and 4-hydroxybenzaldehyde (first) (223); sulfathiazole and sulfametazine (fourth; 0.20-12.0 /tg/mL) (224) ; and vitamins Bj and Bg (first; 286.1 nm, 268.5 nm) (225) . A first-derivative difference method has been described for the determination of four thioxanthene drugs based on measuring the first-derivative spectrum of the oxidized drug relative to a solution of unoxidized drug (226).…”