Ultraviolet spectrometry

Ultraviolet and Light Absorption Spectrometry

“…This review reports the developments in ultraviolet and light absorption spectrometry from January 1994 through December 1995, primarily as documented in the Ultraviolet & Visible Spectroscopy section of CA Selects, and extends the series of reviews on these topics sponsored by Analytical Chemistry starting with Light Absorption Spectrometry in 1945 (1-3), followed by Ultraviolet Absorption Spectrometry in 1949 (4)(5)(6)(7)(8)(9) and combined Ultraviolet and Light Absorption Spectrometry in 1978 (10,11). As in the previous reviews, the subject matter is divided into sections on chemistry, physics, and applications.…”

Ultraviolet and Absorption Light Spectrometry

“…However, since the last reporting period for this review covered the time period from January 1994 through December 1995, this current review will be reporting the developments in ultraviolet and visible absorption spectrometry from January 1996 through October 1997. The citation sources for this review are primarily those as documented in the Ultraviolet & Visible Spectroscopy section of CA Selects and extend the series of reviews on these topics sponsored by Analytical Chemistry starting with Light Absorption Spectrometry in 1945 ( − ), followed by Ultraviolet Absorption Spectrometry in 1949 ( − ) and combined Ultraviolet and Light Absorption Spectrometry in 1978 ( − ). As in the previous reviews, the subject matter is 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).…”