Determination of arsenic, antimony, bismuth and mercury by atomic fluorescence spectrometry using slurry introduction, hydride generation and mercury reduction techniques. 73 - 73. Abstract from XXX Colloquium Spectroscopicum Internationale, Melbourne Vic, Australia. Arsenic, antimony, bismuth, cadmium, copper, lead, molybdenum, silver and zinc are very useful elements in geochemical exploration. In the proposed method, geological samples are fused with potassium pyrosulphate and the fusate is dissolved in a solution of hydrochloric acid, ascorbic acid and potassium iodide.

Arsenic and antimony determination in non

May 15, 2013Arsenic and antimony determination in non- and biodegradable materials by hydride generation capacitively coupled plasma microtorch optical emission spectrometry Author links open overlay panel Alin I. Mihaltan a Tiberiu Frentiu b Michaela Ponta b Dorin Petreus c Maria Frentiu a Eugen Darvasi b Constantin Marutoiu d

The arsenic was distilled by adding 60 ml of hydrochloric acid in the course of 60 minutes, antimony by using 75 ml of hydrochloric acid in the course of 70 minutes, and tin by using 45 ml of hydrochloric acid and 15 ml of hydrobromic acid in the course of 45 minutes.

A new method for the simultaneous separation and determination of four arsenic species [As(III), As(V), monomethylarsonic acid and dimethylarsinic acid], three selenium species [Se(IV), Se(VI) and selenomethionine] as well as Sb(III) and Sb(V) is presented. The speciation was achieved by on-line coupling of anion exchange high-performance liquid chromatography (HPLC) with inductively coupled

Section Name: Lead, Zinc, Cadmium, Tin, Antimony and their Alloys (MTD 9) Designator of Legally Binding Document: IS 13963-2 Title of Legally Binding Document: Chemical analysis of cadmium metal, Part 2: Determination of nickel, arsenic, antimony and thallium by spectrometric methods

silver, mercury, antimony, arsenic, and tungsten from 1919 to 1997. During World War II, the Stibnite mining area produced 90 percent of the antimony (Klahr, 1987) and the majority of the tungsten (Mitchell, 2000) for the Allied war effort. Mining operations took place at Meadow Creek Mine in the Meadow

Antimony Oxide Listing Background Document for the

Inorganic Listing Determination Contains No Confidential Business Information Antimony Oxide Listing Background Document 4 June, 2001 vapor to a white powdery solid. A filtering method, such as a baghouse, is used to recover the antimony powder. The antimony oxide powder is then blended and packaged for shipment.

A method for vitrification of arsenic and antimony, comprising substituting oxygen to sulfur on thiosalts, incorporating resulting sodium arsenate and sodium antimonate into a sodium silicate glass-forming mixture and vitrifying the sodium silicate glass-forming mixture into a resulting glass sequestering the arsenic and antimony.

Determination of arsenic species in the environment and the health effects of arsenic exposure have been reviewed ( 31, 49, 56, 75, 156, 164, 184, 185, 216, 235 ). The separation and identification of volatile arsines in gases (e.g., in headspaces above microbial cultures) is relatively straightforward,

The determination of the oxidation state is of special importance for some hazardous heavy elements (arsenic, antimony, selenium, chromium, uranium, and vanadium). The mobility and hazard of each of these elements depend on its oxidation state.

This paper presents a comparative description of different methods of determination of arsenic, antimony and selenium: spectrophotometric, electro-analytical (voltamperometry), activation analysis, atomic fluorescence and the methods of inductive or microwave-induced plasma in combination with different detection methods (emission or mass spectrometry).

determination of analytes in drinking water where sample turbidity is 1 NTU, the sample is made ready for analysis by the appropriate addition of nitric acid, and then diluted to a predetermined volume and mixed before analysis. 2.2 The method describes the multi

Arsenic(V) and antimony(V) are extracted after reduction with potassium iodide and sodium thiosulfate. Detection limits of 7 pg As and 11 pg Sb are achieved using this extraction method and SFC. Application to natural water and biological sample analysis is discussed.

Atomic-absorption spectrometry with a resistively heated furnace has been used for the determination of 5–52 g g of arsenic, 0.1–5 g g of antimony, 0.07–20 g g of selenium and 0.07–2.1 g g of tellurium in milligram samples of nickel-base alloys added directly to the furnace.

Simultaneous determination of arsenic and antimony in

The method described has the advantages of easy preparation and rapid measurement of samples as compared with the other method, and enables the simultaneous determination of arsenic and antimony. One milliliter of zirconium oxychloride solution (10 mg Zr/ml), a coprecipitant, was added to 100 ml sample solution,

Prevention of antimony and mercury interference was found to be possible by removal with an ion exchange resin. Potassium permanganate digestion at 35C was found to be reliable. ARSENIC DETERMINATION BY THE SILVER DIETHYLDITHIOCARBAMATE METHOD AND THE ELIMINATION OF METAL ION INTERFERENCE | Science Inventory | US EPA

A novel interrupted gas flow (IF) technique has been proposed for highly sensitive determination of ultratrace levels of arsenic and antimony in water samples by atmospheric pressure glow discharge (APGD) excitation source coupled with HCl-KBH hydride generation (HG). It is demonstrated that the gas flow interruption technique provides a dramatic and reproducible enhancement

Add about 4 or 5 g. of stick potassium hydroxide and 30 cc. of water and boil vigorously for 10 or 15 min. All arsenic and antimony will go into solution. Add 25 cc. of strong sodium sulphide solution (1 lb. of fresh mono-crystals to 2 liters of water) and again boil vigorously 5 or 10 min.

1.1. Arsenic and Antimony in the Environment 1.1.1. Arsenic Arsenic is a natural element in the environment. It can be found in soil and in many kinds of rock, especially in minerals and lead and copper ores. It may be released from wind-blown dust and may reach water from runoff and leaching, and during the mining and smelting of these ores.

DETERMINATION OF ARSENIC, ANTIMONY, SELENIUM AND PHYSIOCHEMICAL PARAMETERS IN GROUNDWATER WITHIN IBADAN METROPOLISONI TAIWO OLIWAFUNMILAYOTABLE OF CONTENTSABSTRACTCHAPTER ONEINTRODUCTIONGround Water Quality Assessment 11.1.1 Significance of Water Quality Assessment 11.2 Groundwater Pollution 21.2.1 Sources of Water

Dec 10, 2004A new and sample technique for the simultaneous determination of trace arsenic, antimony, bismuth and selenium in biologic samples by hydride generation-four-channel nondispersive atomic fluorescence spectrometry was development. The conditions of instrumentation and hydride generation of arsenic, antimony, bismuth and selenium were optimized.

A novel interrupted gas flow (IF) technique has been proposed for highly sensitive determination of ultratrace levels of arsenic and antimony in water samples by atmospheric pressure glow discharge (APGD) excitation source coupled with HCl-KBH 4 hydride generation (HG). It is demonstrated that the gas flow interruption technique provides a dramatic and reproducible enhancement of emission

The five elements are coprecipitated simultaneously with lanthanum hydroxide and separated quantitatively from a nickel matrix and other interfering elements prior to the determination. The detection limits of arsenic, antimony, selenium, tellurium and bismuth in samples are 0.10, 0.15, 0.11, 0.10 and 0.45 μg g −1, respectively.

Inorganic Listing Determination Contains No Confidential Business Information Antimony Oxide Listing Background Document 7 August, 2000 Waste Characterization The constituents of concern reported in the RCRA 3007 survey for the slag included antimony arsenic, and lead at various concentrations. Silica was also a reported constituent. Laurel

Arsenic, antimony and selenium are extracted from soil samples with aqua regia according to ISO 11466. Arsenic, antimony and selenium are determined by electrothermal atomic absorption spectrometry (ETAAS), in which discrete volumes of sample solution are dispensed into a graphite tube.

Determination of arsenic, tin and antimony in food by hydride generation atomic absorption spectrometry was investigated. Food was wet-oxidized with nitric acid and sulfuric acid, and some of the oxidized solution was prereduced by heating with potassium iodide solution.

In the presence of cysteine, 10-1000 fold higher amounts of Ni2+, Co2+ and Cu2+ are tolerated in the determination of arsenic, antimony and tin. Cysteine also enhances the signals of arsenic, antimony and tin by 60, 200 and 40%, respectively.