Determination of total tin in shellfish samples by graphite-furnace AAS.
نویسندگان
چکیده
منابع مشابه
Direct Determination of Tin in Human Hair by Graphite Furnace Atomic Absorption Spectrometry Using Air Ashing in Graphite Tube
Direct determination of tin in human hair was performed by graphite furnace atomic absorption spectrometry. Human hair was cut into 3-5 mm long and 1-2 mg of the sample was directly introduced into a pyrolytically coated graphite tube, of which the injection hole was enlarged to a diameter of approximately 5 mm. After introduction of the sample, 20 μl of 30 mg Pd/l in 1 mol/l HCl was added as a...
متن کاملUtilization of electrodeposition on a graphite probe modified with palladium in determination of lead by graphite furnace atomic absorption spectrometry in water and environmental samples
In this work a rapid and selective procedure for separation and preconcentration of lead(Pb2+) before determination by electrothermal atomic absorption spectrometry (ETAAS) wasdeveloped. The procedure is based on the electrodeposition on a graphite probe modified withpalladium. The lead was deposited from acetate buffer solution at pH 5.5. Various parameters,such as pH of solutions, deposition ...
متن کاملDetermination of aluminum in biological samples by atomic absorption spectrophotometry with a graphite furnace.
Aluminum, generally considered non-essential and non-toxic, may accumulate in toxic amounts in the brain in cases of chronic renal failure. We describe a procedure for its analysis in biological fluids by atomic absorption spectrophotometry with a graphite furnace. No sample preparation is required and the procedure is sensitive at the appropriate concentrations. A sample of serum or urine is p...
متن کاملLarge-volume injection electrothermal AAS combined with tungsten-treated pyrolytic graphite furnace: determination of cadmium in tap, snow and river water samples with phosphate modifier.
A large-volume (100 microl) injection-ETAAS with W-treated PG furnace combined with a phosphate modifier was applied to the determination of unpolluted levels of Cd in tap, snow and river-water samples. The limit of detection of 1.1 ng l(-1) was observed for a 4 w/v% NH4H2PO4 modifer. Matrix interference studies were tested for major ion species well found in fresh water. The direct determinati...
متن کاملMultivariate Optimization in the Direct Determination of Antimony and Chromium in Serum Samples by Graphite Furnace Atomic Absorption Spectrometry
Methods for direct determination of antimony and chromium in human serum by Graphite Furnace Atomic Absorption Spectrometry (GF AAS) were proposed in this work. The samples were diluted in 1:1 with nitric acid 1% v/v and Triton® X-100 0.1% v/v. The optimization of the instrumental conditions was done using a multivariate approach. A factorial design (2) was employed to investigate the tendency ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: BUNSEKI KAGAKU
سال: 2000
ISSN: 0525-1931
DOI: 10.2116/bunsekikagaku.49.795