The determination of silicon in deionized process water by graphite furnace AAS

Fehse, Franz

doi:10.1016/0584-8547(84)80067-1

Cited by 11 publications

(2 citation statements)

References 3 publications

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“…Silicon concentration in monomeric-dimeric forms as a yellow silicon molybdenum complex was determined by molecular spectrophotometry (SP) 12 (Spekol 21, Germany; Unico 2100, the USA). The total silicon concentration was determined by atomic absorption spectrometry (AAS) (MGA-915, Russia) 13,14 . Besides, the total silicon concentration in natural bog waters was also determined by spectrophotometry.…”

Section: Methodsmentioning

confidence: 99%

Study of Aqueous Chemical Forms of Silicon in Organic-rich Waters

et al. 2014

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The study of silicon species in organic-rich waters is a very significant problem. This type of waters is widely spread all over the world. It is characterized by a high content of humic substances, high color of water and low pH. In this regard, a certain determination of silicon concentration in this type of waters is impossible without a preliminary investigation of silicon species. The aim of this research is therefore an investigation of the ratio of silicon dissolved forms in organic-rich waters depending on the silicon concentration and the acidity of the water. The study of pH influence on silicic acids and a silicon-humic matter interaction was carried out using model solutions and natural bog waters (Tomsk region). It has been found that the degree of polymerization of silicic acids essentially depends on the acidity of a solution. Scanning of spectrophotometric measurements has shown that silicon does not form stable complexes with fulvic and humic acids in weak-acid media (рН 3-4). Studying the bog waters of Tomsk Region has shown that they (рН=3.66-3.80) contain only monomeric-dimeric and polymeric forms of silicic acids

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Section: Methodsmentioning

confidence: 99%

Study of Aqueous Chemical Forms of Silicon in Organic-rich Waters

et al. 2014

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“…Pb: impaction technique for airborne Pb collection (18FI), investigations of ETA interf for sediments and sludge (Cu, Cr, Cd, Ni also) (11FI); sludges, improved recoveries using H2S04 prior to dry ashing (6FI) Sn: ETA using ascorbic acid/Fe modif for river sediment (9FI) Tl: ETA for fly ash (8FI) (f) Foodstuffs Fe, Cu, Mn, Co, Cr, Mo,Ni in milk,direct ETA (6FJ) Cd: Simult ETA determ of Cd and Pb using dry ashing (7FJ), ETA using platform, Zeeman, 02 ashing for milk samples (Pb also) (8FJ) Co: ETA for grass and cereal (2FJ) Cu: direct ETA for milk (3FJ) Pb: ETA for milk and infant formula without sample digestion (1FJ), ETA for fish, radiotracer (203Pb) to validate method (4FJ), investigation of P, Ca interf in canned fish (9FJ) Sn: ETA for fats and oils using Ta or Nb treated furnace (5FJ) Ga: depth profiling in Si using ETA and ICP-AES (7FN) Ge: ETA using Ni and Ba nitrate modif (1FN) (k) Vegetation Cd, Cr, Ni, Pb, Sb, Tl: platform, ascorbic acid modif (4FO) Au: method for Fe interf (1FO) Ca: investigation of P and N interf in FAA (5FO) Mo: carbon rod atomizer utilizing H2, CH4, N2, and 02 sheath gases (6FO) Ni: ETA (3FO) (1) -Water 22 elements in nuclear solutions using ETA (6FP) As, Cd, Ge, Sb, Se: thermomineral water using As, Cd, Cr, Mn, Ni: seawater using platform, modif Fe: FAA for potable water (Mn also) (18FP) Li: invest of FAA interf in wastewaters (16FP) Pb: invest interf in natural waters (15FP), La-treated tube (20FP) or modif (5FP) for potable water, eval of ascorbic acid modif for seawater (Mn, V, Mo also) (17FP) Ru: FAA for wastewaters (1OFP) Si: multiple sample injections for preconcn of deionized H20 (4FP) Tl: ETA with Pd, Pt modif for wastewater (14FP) Zn: interf minimization for FAA (Cu, Cd also) (3FP) (m) Miscellaneous Cr, Se: in beer (3FQ) Mn: in gunshot residue (4FQ) Tl: in fluid cracking catalysts using Al and La modif,FAA (2FQ) Cu, Ni, Cr, Fe: in ultra-high-purity glasses (1FQ) Dittrich et al (6FB,7FB) pursued the potential of Al, Ga, In, and Tl halides and GeS molecular absorption for quantitative analysis. Similarly, Itai et al (11FB) evaluated interference effects encountered with A1F electrothermal molecular absorption spectrometry.…”

Section: F Approaches To Specific Analysesmentioning

confidence: 99%

Atomic absorption, atomic fluorescence, and flame emission spectrometry

Holcombe¹,

Rettberg²

1986

Anal. Chem.

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Flame and Graphite Furnace Atomic Absorption Spectrometry in Environmental Analysis

Sperling¹

2000

Encyclopedia of Analytical Chemistry

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Atomic absorption spectrometry (AAS) is one of the most often used techniques for the quantitative determination of elements in environmental materials at trace and ultratrace levels. AAS is an optical atomic spectrometric technique based on the measurement of the specific absorption originating from free nonionized atoms in the gas phase. To transfer the analyte to free atoms, different types of atomizer are in use, the flame and the graphite furnace types being the most often used. Typical detection limits of flame atomic absorption spectrometry (FAAS) are of the order of 1–100 µg L −1 , making it a perfect tool for the determination of minor and trace elements, at least for contaminated samples. Graphite furnace atomic absorption spectrometry (GFAAS), offering detection limits which are about a factor of 20–200 lower than for FAAS, is the standard method for many trace elements, especially for background values, and for unpolluted samples, such as fresh water and biological materials. AAS in its conventional configuration is a single‐element technique, which has to be used in a sequential mode when more than one element has to be determined. However, there are commercial instruments available that can be used for the determination of 6–8 elements simultaneously.

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The determination of silicon in deionized process water by graphite furnace AAS

Cited by 11 publications

References 3 publications

Study of Aqueous Chemical Forms of Silicon in Organic-rich Waters

Study of Aqueous Chemical Forms of Silicon in Organic-rich Waters

Atomic absorption, atomic fluorescence, and flame emission spectrometry

Flame and Graphite Furnace Atomic Absorption Spectrometry in Environmental Analysis

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