— A method of determination of Co, Cu, Pb and Ni in nanogram quantities from aragonite is presented. Flotation and extraction of Co, Cu, Pb and Ni is suggested as methods for elimination matrix interferences of calcium. The method of flotation is performed by iron(III) hexamethylenedithiocarbamate, Fe(HMDTC) 3, as a colloid …
— A micro extraction – spectrophotometric procedure is developed for the determination of bismuth in pharmaceutical formulations. The procedure is based on the extraction of tetraiodobismuthate ...
— Electrochemical determination of bismuth with use of a Bi(III)-cupferron complexation system and elimination of interferences connected with the presence of organic substances in natural samples. ... The micro-flotation results showed that cupferron has a strong collecting performance for malachite. This research provides a better …
— Apart from the surface reactions taking place the electrochemical conditions under which flotation is achieved in aerated solutions seem to dependant on the amount of iron (figure 2.8) in the ...
— 1 Introduction. Bismuth has been used in medicines for the treatment of helicobacter pylori-induced gastritis [Citation 1, Citation 2].Bismuth and its compounds are also used in semiconductors, cosmetic preparations, alloys and metallurgical additives and in the preparation and recycling of uranium nuclear fuels [Citation 3].As the uses of …
— The determination is made in the usual way : 50 c.c. of the prepared solution, which should not carry more than 0.75 milligram nor less than 0.01 milligram of bismuth, are placed in a Nessler tube and the colour compared with that observed in a similar tube containing water and potassium iodide on adding the standard solution of bismuth.
— A study of a new type of mercury-free working electrode – the bismuth bulk annular band working electrode (BiABE) – applied for thallium(I) detection via differential pulse anodic stripping voltammetry (DP ASV), preceded by the complexation of interfering ions (Cd 2+, Pb 2+) with EDTA in an acetate buffer (pH 4.5), is reported.The …
A method is described for the flotation and determination of sub-microgram levels of bismuth in water. Bismuth(III) in a 1000ml sample of water is coprecipitated with iron(III) hydroxide at pH 4.0±0.2. The precipitate is floated with the aid of a mixed surfactant (sodium dodecyl sulphate and sodium oleate) and small air bubbles, then separated and …
A method is described for the separation and determination of sub-microgram levels of tin in water. A submicrogram amount of tin(II, IV) in a 1000-ml sample of water is coprecipitated with iron(III) hydroxide at pH 4.0±0.2. The precipitate is floated with the aid of sodium dodecyl sulfate and small air bubbles, and then separated and dissolved in 2 ml of 6 M …
— A rapid, selective, and highly sensitive froth flotation method for the separation and enrichment of ultra trace amounts of bismuth is developed. The bismuth-Arsenazo …
— A new method for flotation separation and determination of bismuth using microcrystalline adsorption system was established. The proposed method has been …
This study reviews the increasing utilization of bismuth in the biomedical field over the past two decades. Through bibliometric analysis, the researc…
Summary. A method is described for the flotation and determination of sub-microgram levels of bismuth in water. Bismuth(III) in a 1000 ml sample of water is coprecipitated with iron(III) hydroxide at pH 4.0 +_ 0.2. ... flotation and determination of bismuth were investi- gated. This method is simple and rapid, and applicable
— DOI: 10.1016/S0003-2670(98)00291-8 Corpus ID: 94913932; Determination of arsenic, antimony, selenium, tellurium and bismuth in nickel metal by hydride generation atomic fluorescence spectrometry
— In-plane Orientation Determination of Bismuth-based Superconducting Films by X-ray Diffraction[J]. Materials Reports, 2023, 37(S1): 22070253-5. URL:
A flotation method which utilizes a zirconium hydroxide-sodium oleate-air system at pH 9.1±0.1 is described for the separation of sub-microgram levels of antimony(III), bismuth(III) and tin(IV) in water. The time required for the preconcentration was about 20 min per sample after 20 min of stirring.
— A new, selective, and highly sensitive nanodrop spectrophotometric (NDS) method was developed for the determination of bismuth(III) with iodide and N-octylacetamide (N-OAA). The extraction of the Bi(III)–iodide–N-OAA complex was carried out using a synthesized organic reagent, i.e. chloroform solutions of various amides, …
— An efficient method for extracting bismuth (Bi 3+) from a hydrochloric acid (HCl) system by cementation with copper (Cu 0) powder was proposed in this work.The thermodynamic properties of cementation were investigated via cyclic voltammetry measurement and thermodynamic calculation.Then, the effects of reaction temperature, …
— Hydrogen peroxide (H2O2) is a strong oxidizer that causes non-selective oxidation of sulfide minerals, and its influence on bismuth sulfide ores is not well-documented. In this study, H2O2 was proposed as an alternative bismuthinite depressant, and its effect on a Mo-Bi-containing ore was intensively investigated by batch flotation …
— Distribution of the literature about bismuth determination in environmental solid samples as a function of the analytical technique employed. Among atomic spectrometric techniques, electrothermal atomic absorption spectrometry (ET-AAS) is used by greatest number of workers while others (i.e. flame atomic absorption spectrometry …
A review of bismuth determination methods has been published [14]. 10.2.1 Dithizone method. With dithizone ... The best results have been obtained with Brilliant Green (flotation with CCl 4 –toluene mixture, dissolution of the separated compound in ethanol, ε …
Download Table | Determination of bismuth in different samples. from publication: Spectrophotometric determination of bismuth in water samples by dispersive liquid-liquid microextraction after ...
— The insoluble bismuth oxide is separated by flotation, and is determined spectrophotometrically. The method is similar in principle to those described recently for cadmium oxide in cadmium [4] and lead oxide in lead [5]. ... The method was applied to the determination of bismuth oxide in bismuth metal of various forms. The results are given …
— Hence, H2O2 has the potential to act as an effective depressant in bismuth sulfide ore flotation. View full-text. Article. Potential controlled flotation of Sarcheshmed molybdenite.
The paper presents a novel method for the flotation separation of Bi3+ using microcrystalline adsorption system prior to the determination by spectrophotometry. The effects of different parameters, such as the dosages of KI and dodecyl trimethyl ammonium bromide (DTMAB), various salts and acidity etc. on the flotation yield of Bi3+ have been …
The flotation of tin and bismuth coprecipitated with thionalide at pH 2- 3 is thus useful for the enrichment of low gg 1-a levels of tin(IV) and bismuth(III) from water and sea water. The …
Study on Spectrophotometric Method for Determination of Bismuth after Flotation Separation Using Microcrystalline Adsorption System. Xin-rong Wen C. Tu. Chemistry, Materials Science. 2012; The paper presents a novel method for the flotation separation of Bi3+ using microcrystalline adsorption system prior to the determination by …
— A simple spectrophotometric method for the determination of bismuth potassium ammonium citrate in the cleaning wastes of industrial equipment using 4-(2'-pyridylazo)-resorcinol is proposed.
— A hydride generation procedure, via flow injection, coupled to electrothermal atomic absorption spectrometry was optimised for Bi determination in sea water and hot-spring water and acid extracts from coal, coal fly ash and slag samples. The effects of several variables such as hydrochloric acid and sodium tetrahydroborate concentrations, …
— Metallic bismuth is used principally in alloys, to many of which it imparts its own special properties of low melting point and expansion on solidification (like water and antimony). Bismuth is thus a useful …
— A simple spectrophotometric method for the determination of bismuth potassium ammonium citrate in the cleaning wastes of industrial equipment using 4-(2'-pyridylazo)-resorcinol is proposed.
The determination of trace amounts of bismuth in environmental samples was investigated by hydride generation-atomic absorption spectrometry. For a simpler procedure, an argon-hydrogen flame was used instead of the graphite furnace originally proposed by Lee. Under the analytical conditions proposed here, the detection limit was 1 ng as bismuth (S/N=2) …
Study on Spectrophotometric Method for Determination of Bismuth after Flotation Separation Using Microcrystalline Adsorption System. The paper presents a novel …
— Yang et al. [3] proposed a process for the recovery of bismuth from a low-grade bismuth glance flotation concentrate by a solvent extraction method using a trialkyl amine extractant. Wang et al ...
— The main purpose of this study was to characterize and to extract bismuth and molybdenum from a low grade bismuth glance concentrate. Selective leaching of bismuth could be obtained at a temperature range 60 to 85 °C for a leaching duration of 2 h with hydrochloric acid concentration of 150 gpl, lignin calcium concentration of 0.02 gpl …
— The solvent extraction separation of bismuth and molybdenum from a low grade bismuth glance flotation concentrate. Hydrometallurgy (2009) ... Towards determination of trace amount of bismuth (III) ions in real samples, we used cellulose/CBIMMT-resulted-ligand nanocomposite for its preconcentration and …
The flotation of tin and bismuth coprecipitated with thionalide at pH 2- 3 is thus useful for the enrichment of low gg 1-a levels of tin(IV) and bismuth(III) from water and sea ... The procedure for the AAS determination of tin and bismuth after the separation were almost the same as previously reported [3, 4]. Acknowledgements.
— Abstract A new, simple, rapid, selective, and sensitive flow‐injection analysis (FIA) method for the spectrophotometric determination of Bi is described. It is based on reaction of Bi (III) with I− ions in the presence of cationic surfactants (CS), i.e., cetylpyridinium chloride, cetyltrimethylammonium bromide, …
