SODIUM DIETHYLDITHIOCARBAMATE AS A SPECTROPHOTOMETRIC REAGENT FOR THE DETERMINATION OF CHLORAL HYDRATE
Chloral hydrate reacts with sodium diethyldithiocarbamate to give an orange-red colour after heating at 100°C for 3 min. having maximum absorbance at 450 nm. The reaction is selective for chloral hydrate with 0.01 mg/10 ml as visual limit of quantitation and provides a basis for a new spectrophotometeric determination. The reaction obeys Beer's Law from 0.01 to 3 mg/10 ml of chloral hydrate and the relative standard deviation is 0.68%. The quantitative assessment of tolerable amounts of other drugs like aldomet, benzodiazepines, phenytoin sodium, phenobarbitone and naproxen are also studied.
Summary In the pilot study, a new geomodeling technology is presented for developing 3D heterogonous geomodels for Athabasca McMurray (MCMR) oil sands. The geomodels were used to simulate SAGD thermal recovery. Both conventional SAGD completions and SAGD with ICD completions were tested. The simulation results show that for a heterogeneous Athabasca McMurray oil sand reservoir, the ICD completion technology enhances oil production and reduces steam consumption. As a result, the economics of SAGD recovery from the heterogeneous sands is improved.