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Improve the determination of trace copper ion selective electrode sensitive


To white crystals appear. To digest a good sample was dissolved in water plus 20ml urine test solution,[link widoczny dla zalogowanych], the solution to take 6ml,[link widoczny dla zalogowanych], add 1ml and 1ml buffer masking agent, it is measured by experimental methods of copper ion concentration. With the method blank test. Applied to the determination of the 4 patients with urinary copper content, (Table 1),[link widoczny dla zalogowanych], with the reported value of the O. 017 ~ 0.300 ~ tg / ml 【】 than satisfactory results. 4 Discussion 4.1 The precision and recovery were to take a urine sample for 6 parallel determinations, precision of the method meet the requirements of trace analysis. Reuse of a urine sample for standard addition recovery experiment,[link widoczny dla zalogowanych], the average recovery was 99.92, precision and recovery test results in Table 2. 4.2 The experimental method described in this article can be precision measurement <O. 1 ~ g / ml of copper, it would be applied to trace amounts of copper in human urine samples with satisfactory results. In theory, the formula (2) applications can adapt to a variety of ion selective electrode. Body Fluid 4.3 Determination of Copper in the diagnosis of disease, pathogenesis research is important, but often used by some obscene volume of copper the results of a feces sample No. deep soil moisture be effective turn cultivated _ ~ soap / o. 0500o. 039B0.0802o. 0 coffee 9o. 0380. o00o. 0n0. o7880.040.04n0.0792o. 079B ~ a 9 huan chu 2 whip closing img pest density and the choking of the apparatus costly and cumbersome method, and copper ion selective electrode apparatus cheap, simple, easy to promote the use of. ● BIBLIOGRAP l, poisonous sea, and so on. Determined by flame atomic absorption spectrometry spike poultry eggs Qu. Volume 1fI, boats, zinc, cadmium, manganese, iron. Analytical Chemistry, 1953Il . Stripping Voltammetry Determination of urinary actinides direct hit studies. Shanghai Medical Journal column experience .1991, el1'l84. Shito pull, etc.. ISE hit with the determination of the amount of wine Portugal Cao Cu. Dan analytical chemistry, 1987'16l1'l125. Sun Yi . and so on. copper ion selective electrode spike set new drugs ■ Department of Danwei amount of copper in Kyrgyzstan. Journal of Pharmaceutical Analysis jack Dan, 1990I10'5, lSOS6.AlbertoEn ~ iqueVIIla.RapidmethodfordeterminingveryIowfluorldecocentrBtlonsusingBnion · seIectlveelectrode.Analyst, 19881llS {8'I1299. Huazhong Taiwan University of Science and Technology Association. trace elements in the data sheet 'first all boats' .1958 l124 (1992-15-95 Received' RaisingSensitivityinDeterminationofTraceCopperwithIon-sekmtiveElectrodeYeQing, LfJixseandZhuZhonphe (DepartmentofPharmaceuticalAnalysis) AbstractThelowerdetectionlimitofcopperdeterminatedwithcopperion-selectiveelectrodeisusuallyabove0.1p.g/mI.Thispaperdescribesamet-hodtodetermine < ; 0.1pg/mIoftracecopper, byrectificationofablankvalueincomparingwithastandardcave, andmathematlca1calculation.Thedeterminationoftracecopperinhumanurinesbythismethodpresentedthecoefficientofvariation (9.9%, n = 6) andtherecovery (88.51% ~ 112.96%). TheresultwassatisfactorY.KeyWord9copper} ion-selectiveelectrode; humanurine