Facultad de Ciencias Químicas y Farmacéuticas: Recent submissions
Now showing items 4721-4740 of 5098
-
(PERGAMON-ELSEVIER SCIENCE LTD, 2002-05)A rapid analytical approach for determination of polycyclic aromatic hydrocarbons (PAHs) present in real samples of particulate matter (PM10 filters) was investigated, based on the use of water under sub critical conditions, ...
-
(KLUWER ACADEMIC PUBL, 2002-06)A first derivative spectrophotometric method has been developed for the determination of parathion and p-nitrophenol in vegetable tissues. Ethanol was used as solvent for extracting the compounds from the tissues and ...
-
(ELSEVIER SCIENCE BV, 2002-12)A new method for the simultaneous determination of iron and ruthenium at ultra-trace levels is proposed. The method is based on the formation of the iron and ruthenium complexes with 2,4,6-tri-(2-pyridil)-1,3,5-triazine ...
-
(AOAC INTERNATIONAL, 2002-07)This paper reports a simple and fast method for the simultaneous determination of estradiol (ED) and medroxyprogesterone acetate (MP) in pharmaceutical formulations by second-derivative spectrophotometry. Methanol was used ...
-
(ELSEVIER SCIENCE BV, 2001-06-12)A selective dynamic method for the determination of sulphide in Liquid and solid samples based on the integration of hydrogen sulphide pervaporation and potentiometric monitoring of the sulphide in a laboratory-made module ...
-
(SPRINGER HEIDELBERG, 2005-04)A simple continuous flow method is proposed to eliminate copper interference in arsenic speciation by hydride generation, based on the selective retention of this interfering ion in an iminodiacetate chelating resin previous ...
-
(WILEY-V C H VERLAG GMBH, 2002-10)A flow through electrochemical cell was designed for the implementation of a simple, efficient, rapid and sensitive method for determination of mercury in water samples by anodic stripping voltammetry. A solid gold or a ...
-
(SOC BIOLGIA CHILE, 2007)Diabetic nephropathy (DN) is one of the major complications of type 2 diabetes and is associated with coronary disease. Nephrin, a protein mainly expressed in glomeruli, is decreased in DN and other kidney diseases. Since ...
-
(SPRINGER, 2008-10)In this work, we explore the use of the unbiased cDNA-AFLP strategy to identify genes involved in Mn2+ homeostasis in Ceriporiopsis subvermispora. In this ligninolytic white-rot fungus, whose genome has not yet been ...
-
(SOC BRASILEIRA QUIMICA, 2009)A derivative of D-xylose, 1,2-O-isopropylidene-alpha-D-xylofuranose (1), with Ti((OPr)-Pr-i)(4) was used as a chiral catalyst in the asymmetric alkylation of benzaldehyde with diethylzinc (Et2Zn) for the high-yield production ...
-
(ELSEVIER SCIENCE BV, 2008-06-06)An efficient continuous pressurized solvent extraction (PSE) method assisted by ultrasound energy was developed for the extraction of polychlorinated biphenyls (PCBs) from biosolids. Analytes were determined in the extracts ...
-
(PERGAMON-ELSEVIER SCIENCE LTD, 2008-01)The effect of biosolid incorporation on arsenic distribution in Mollisol soils in central Chile was studied. Two soils were sequentially extracted for arsenic with a five-step method that accounts for the following arsenic ...
-
(PERGAMON-ELSEVIER SCIENCE LTD, 2008-08)A Study was done on the influence of redox potential on the mobility and availability of the various arsenic chemical forms in a Mollisol soil from central Chile amended with biosolid. Arsenic availability was strongly ...
-
(SPRINGER HEIDELBERG, 2004-09)A rapid and simple method has been developed for determination of inorganic elements in airborne particulate matter (PM10) by using acidified subcritical water and ICP-OES. Elements such as Al, As, B, Ba, Cd, Cu, Fe, Mn, ...
-
(AOAC INTERNATIONAL, 2004-11)A new method for the sequential determination of attapulgite and nifuroxazide in pharmaceutical formulations by first- and second-derivative spectrophotometry, respectively, has been developed. In order to obtain the optimal ...
-
(SPRINGER, 2004-09)
-
(ACADEMIC PRESS LTD ELSEVIER SCIENCE LTD, 2009-06)The purpose of this study was assessing Cu and Zn availabilities in soils amended with a biosolid through the determination of their sequentially extracted chemical forms and their relationship with the contents of these ...
-
(AOAC INTERNATIONAL, 2003-11)A derivative spectrophotometric method was developed to determine NO3--N in plant tissues. The method is based on measurement of the first-derivative spectrum of nitrosalicylic acid in basic solution. The nitrosalicylic ...
-
(ELSEVIER SCIENCE BV, 2007-10-26)This work describes an optimised method for the determination of six representative organophosphorus pesticides (OPPs) (diazinon, parathion, methyl pirimiphos, methyl parathion, ethoprophos, and fenitrothion) in agricultural ...
-
(ROYAL SOC CHEMISTRY, 2004)Following our research on copper, arsenic and antimony in Chilean ecosystems, a study to understand the mobility and transport of these elements from soil to plants was carried out. So, the aim of this study, which follows ...
