Spectrophotometric determination of niobium(V) as a mixed ligand complex with gallic acid and 1,2-diaminocyclohexanetetraacetic acid

Abstract

from a phase-lock loop. Consequently, the only electronic device not constructed from integrated circuits could be a strip-chart recorder.

Ultraviolet and light absorption spectrometry

“…of isopolymolybdate by ascorbic acid Differential spectrophotometry, 4,5-dihydroxyfluorescein [520] o-Hydroxyhydroquinonephthalein [515] Phenylfluorone (CHCl,) [510] Phenylfluorone (CC14) Propylfluorone, antipyrine (CHCIJ [500; 5.9 X 104] Pyrocatechol violet, diphenylguanidine [582; 6. Semimethylxylenol Blue [559-564; 5.97 x 104] Thoron (trioctylphosphine oxide) [545] 0-or p-Anise green, HBr (C6H6) [615; 1.96 X 104, 2. 30 l-(2-Pyridylazo)-2-naphthol (CHC13) [615] Salicylhydroxamic acid (isoamyl ale.)…”

“…GCA/McPherson has introduced the Super 700 model, a completely digital, interfaced instrument with a programmable statistical calculator that provides for unattended data acquisition, storage, and calculation, first and second derivative spectra, peak location, and peak area integration (165). Carminic acid [585; 0.1-0.5 ppm] Steel Curcumin [545 ] Ferrosilicon Quinalizarin [620] Br Kinetic inhibition of oxidn. of 4,4'-dihydroxydiphenyI by Tl(III)…”

“…Acridine orange [492] Hydrazides 2,3-Dichloro-1,4-naphthoquinone 17-Hydroxycorticoids Cu(OAc)2, pyrrole, MeOH (C6H6) [587][588][589][590][591][592][593][594][595][596][597][598][599][600] 8-Hydroxyquinoline Ar-2,6-Trichloro-p-benzoquinoneimine [625; 2-7 ppm] Iminodiacetic acid Dual wavelength tech. : Ferric alum [250,300] Isoprenaline sulfate Pharmaceuticals Thiosemicarbazide [490; 2-16 ppm] Ketohexoses HC104, urea [605] Lactic acid Blood Lactate dehydrogenase to form NADH [340] Lipids, total Serum p-(Dimethylamino)benzaldehyde [540] Malonate Diazotized p-nitroaniline [445 ] Methylene blue Ammonium hexanitratocerate (nitrobenzene) [545] Methyl glyoxal 2,4-Dinitrophenylhydrazine [432; 3.4 X 104] m-Nitro compds.…”