Determination of tellurium in urine by graphite furnace atomic absorption spectrometry after solvent extraction.
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چکیده
منابع مشابه
GRAPHITE FURNACE ATOMIC ABSORPTION SPECTROMETRY WITH MAlIlRIX MODIFICATION FOR DETERMINATION OF LEAD IN DRINKING WATER
An amoniumvanadate plus sodium molybdate mixed modifier Graphite Furnace Atomic Absorption Spectrometric method has been developed for determination of traces of lead in drinking water. The concentration of lead in the sample is obtained by direct comparison to linear working graph prepared from aqueous standards in the modifier medium, The results indicate the better performance of the pro...
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A sensitive and simple method for the determination of trace amounts of indium in water samples by graphite furnace atomic absorption spectrometry (GFAAS) after coprecipitation with chitosan was investigated. Indium was quantitatively preconcentrated from water samples by coprecipitation with chitosan at pH 7.0-9.0. The coprecipitant was easily dissolved with acetic acid, and indium in the resu...
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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 ...
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A simple procedure for graphite-furnace atomic absorption analysis of cadmium in urine, based on the use of a temperature-controlled heating unit, is described. The temperature of the carbon rod is measured by resistance and controlled by electronic feedback. We studied the influence of various heating times and temperatures of ashing and atomization, as well as suitable diluents. Urine samples...
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カ ド ミウム(Cd)作 業者 のCd曝 露 指 標 として,血 液 お よび 尿 中Cdの 測 定 が有 効 であ り1),こ れ ら生体 試 料 中 のCd測 定方 法 と しては黒 鉛 炉原 子 吸 光法2~6)が 広 く 用 い られ て い る.こ の方 法 に よるCd定 量 では, Cdお よび そ の化合 物 の融点 が低 いた め,原 子 化 段階 以 前 での 揮 散 が問 題 で あ り,対 策 と して適 当な 干渉 抑制 剤 を添 加 す る ことに よ り,揮 散 を 抑制 す る方 法 が と られ て い る. Cd定 量 に 対 して は, HNO32-4), NH4H2PO43,4), NH4NO33-5), NH4F4,6)お よびPd(NO3)25)な どが 干渉 抑制 剤 と して提 唱 され て い る.血 中Cd(Cd-B)の 定量 に従...
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ژورنال
عنوان ژورنال: Analytical Sciences
سال: 1990
ISSN: 0910-6340,1348-2246
DOI: 10.2116/analsci.6.83