Determination of mercury in water by furnace atomic absorption spectrometry after reduction and aeration

Siemer, Darryl D.; Hageman, Lynn R

doi:10.1021/ac50051a025

Cited by 19 publications

(3 citation statements)

References 11 publications

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“…A number of different criteria could he used in judging the potential of the hydride generation technique as an analytical method, but perhaps one of the most fundamental considerations is whether or not the technique is viable for analysis of complex samples. Studies involving grain (39), air particulates (40), tobacco samples (41), raw sewage (15, 42), steel alloys (19,43), animal feed mixes (44), a variety of foods (16), biological samples (35,36), and geochemical samples (30) have been published. The variety and number of samples indicate that future studies involving hydride generation could be readily applied to complex sample analysis.…”

Section: Complex Sample Analysismentioning

confidence: 99%

Development of Hydride Generation Methods for Atomic Spectroscopic Analysis

Bobbins¹,

Caruso²

1979

Anal. Chem.

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Hydride generation has been utilized for over 100 years in both qualitative and quantitative procedures known as the Marsh reaction and the Gutzeit test, respectively, which deal with the determination of arsenic. This sampling technique may be used to separate and preconcentrate ana lyte(s) from sample matrices, thereby removing potential chemical and/or spectral interferences commonly en countered with direct solution analysis.The use of hydride generation in modern spectroscopic analysis began with the spectrophotometric determination of arsenic. One of the earlier procedures describes the generation of arsine by reaction of mossy zinc with an HCl/HjSO] mixture. The reaction products were bubbled into a solution containing ammonium molybdate hydrazine sulfate where the subsequent reaction formed a molybdenum heteropolyblue arsenic complex that gave a characteristic absorption spectrum ( / ). Since this procedure was described in 1951. a number of other similar spectrophotometric procedures involving hydride generation have been published.The rapid development of atomic absorption techniques of analysis resulting from its inherent specificity and sensitivity made it the technique of choice for many elemental analyses by the late L960's. Direct solution nebulization was almost exclusively used as the method of sample introduction. However, there were problems associ-

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Section: Complex Sample Analysismentioning

confidence: 99%

Development of Hydride Generation Methods for Atomic Spectroscopic Analysis

Bobbins¹,

Caruso²

1979

Anal. Chem.

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“…This means that the determination sensitivity is influenced by gas-flow rate, and that slight changes in the flow rate between measurements would also impair the reproducibility of the determination. 10 In order to circumvent these problems, methods for the determination of mercury have been developed using a combination of the cold vapor generation technique, trapping in a porous gold-plated graphite mini-tube, 11 a goldcoated 12,13 or a platinum-lined graphite tube, 10 followed by atomic absorption spectrometric detection.…”

Section: Introductionmentioning

confidence: 99%

Determination of Mercury in Biological Tissues by Graphite-furnace Atomic Absorption Spectrometry with an in-situ Concentration Technique

2002

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A method has been described for the determination of total mercury by graphite-furnace atomic absorption spectrometry (GFAAS) using an in-situ concentration technique with a Pd-Zr coating and a chemical modifier. The characteristic mass, which gives an integrated absorbance of 0.0044 s, was found to be 42 pg and an absolute detection limit (3σ) of 33 pg was obtained with the proposed modifier. The total mercury values in standard reference materials, including Mussel (GBW08571), Bovine liver (GBW08306), Peach leaf (GBW08501) and Tea leaf (GBW080001), were determined using the proposed method, and the results were consistent with reference values. The method had been successfully applied to the determination of mercury in biological tissue samples with a recovery range of 94 -105%.

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“…Najvažnije fizičke metode za detekciju žive zasnivaju se na merenju karakteristične talasne dužine od 253,7 nm koja odgovara elektronskim prelazima u atomu Hg [32].…”

Section: Fizičke Metodeunclassified

Microelectronic sensor of elemental mercury (Hg) in gas phase

Sarajlić¹

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Na kraju zahvalio bih se svojim sestrama Mirjani Sarajlić i Snežani Topalović, Miki, Relji i Gojku za podršku i razumevanje. Milija Sarajlić Mikroelektronski senzor elementarne žive Rezime moguće je u potpunosti reprodukovati proces izrade senzora uz posedovanje odgovarajuće opreme. Disertacija daje pregled mernih metoda i senzora do sada poznatih za merenje koncentracije živine pare u vazduhu. Poseban akcenat je stavljen na senzore koji funkcionišu po principu površinske adsorpcije. Ovo iz razloga što senzor razvijen u okviru teze funkcioniše po istom principu. Opšti podaci o fizičko-hemijskim osobinama žive su dati a takoñe i uticaj žive kao zagañivača na ljudsku okolinu. Poseban osvrt dat je na zakonsku regulativu o zaštiti ljudi na radu i u svakodnevnim uslovima. Moguće je pojednostaviti izradu senzora i proizvesti ga pomoću opreme koja je već dostupna za izradu mikroelektronskih komponeneti sa najsitnijim detaljima od 20 µm. Senzor ima osetljivost dovoljno veliku da može da registruje mala zagañenja životne okoline, daleko ispod propisanih zakonskih maksimuma. Takoñe, sa novom procedurom kontinualnog očitavanja senzor se može iskoristiti za praćenje trenutnih promena koncentracije živine pare u atmosferi.

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Determination of mercury in water by furnace atomic absorption spectrometry after reduction and aeration

Cited by 19 publications

References 11 publications

Development of Hydride Generation Methods for Atomic Spectroscopic Analysis

Development of Hydride Generation Methods for Atomic Spectroscopic Analysis

Determination of Mercury in Biological Tissues by Graphite-furnace Atomic Absorption Spectrometry with an in-situ Concentration Technique

Microelectronic sensor of elemental mercury (Hg) in gas phase

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