UV-Aufschluß organischer Wasserinhaltsstoffe bei spurenanalytischen Multielement-Anreicherungen, speziell an Chelat-Ionenaustauschern

Burba, P.; Willmer, P. G.

doi:10.1007/bf00476652

Cited by 24 publications

(4 citation statements)

References 15 publications

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“…Alternatively, organotin species in aqueous samples can be digested by UV irradiation in the presence of H202 prior to quantitative analysis. Decomposition of organotin compounds with this procedure is reported to be complete, even in complex samples (1,18).…”

Section: Resultsmentioning

confidence: 94%

Atomic absorption determination of tin using in situ concentration of stannane in a graphite furnace

Sturgeon¹,

Berman²

1987

Anal. Chem.

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Section: Resultsmentioning

confidence: 94%

Atomic absorption determination of tin using in situ concentration of stannane in a graphite furnace

Sturgeon¹,

Berman²

1987

Anal. Chem.

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“…Organic components (e.g., humic substances) in aqueous samples are (advantageously) decomposed by photolytic mineralization using an UV-lamp in the presence of H202 or other oxydizing agents (Ref. [28][29][30]. This procedure can effectively be applied even prior to voltammetric determination methods.…”

Section: Decomposition Methodsmentioning

confidence: 99%

Role of sample decomposition and preconcentration in elemental trace analysis

Tölg¹

1983

Pure and Applied Chemistry

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-Progress in elemental trace analysis means that lower concentrations can be determined in a more reliable and efficient way. The demands posed to trace element analysis follow generally the tendency that lower and lower concentrations should be determined in matrices which become more and more complex. The most economical scientific strategy depends strongly on the element to be determined, on the kind of sample and especially, on the power of detection. Therefore, we must develop the strategy of determination in view of two widely differing thoughts: 1. It is necessary to apply direct instrumental methods for routine analysis in order to save time and man-power. This can be done only, if the required power of detection is asserted in view of a suff icient reliability of the results. 2. Multi-stage combined procedures have to be preferred in all cases, where direct instrumental methods still yield insufficient or incorrect results, in spite of the fact that they are usually more time and/or labour consuming.This paper intends to concentrate in particular on these procedures, in which decomposition and preconcentration methods have to precede the actual end-determination. The main goal is the minimization of systematic errors which become more crucial at the low concentrations involved. Especially those combined methods of a high degree of universality and reliability will be considered.Examples will be given for the determination of Hg, Se, Tl and B at ng/g and pg/g levels.

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“…The 500 mL of river water samples were digested by photocatalysis in the presence of 10 mg of TiO 2 , using a low-pressure Hg-lamp integrated in a closed quartz vessel 18 . The preconcentration experiments were carried out by percolating 100 mL of water samples (digested by photocatalysis or undigested) through the column packed with 1 g of Cell-PAB.…”

Section: Preconcentration and Determination Of Heavy Metals In Naturamentioning

confidence: 99%

Synthesis, characterization and determination of the metal ions adsorption capacity of cellulose modified with p-aminobenzoic groups

et al. 2004

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This paper describes the synthesis and characterization of p-aminobenzoic modified cellulose (Cell-PAB), as well as the separation and preconcentration of Cd(II), Cu(II), Ni(II), Pb(II) and Zn(II) ions from an aqueous medium using a Cell-PAB bath and the column technique. The quantity of p-aminobenzoic groups attached to the cellulose surface, i.e., 1.81±0.04 mmol/g, was determined by elemental analysis. The FT-IR spectra of Cell-PAB revealed characteristic bands of paminobenzoic groups, indicating the desired functionalization of the cellulose surface. The adsorptive capacities for the metals (Ns) Cd, Cu, Ni, Pb and Zn (Ns) were, respectively, 1.72 ± 0.02, 1.96 ± 0.02, 1.88 ± 0.04, 2.01 ± 0.03 and 1.93 ± 0.03 mmol/g. Metal separations performed in flow experiments using a column packed with 1 g of Cell-PAB and 5 mL of 1.5 mol/L HCl solution as eluent achieved an almost 100% metal ions recovery rate.

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UV-Aufschluß organischer Wasserinhaltsstoffe bei spurenanalytischen Multielement-Anreicherungen, speziell an Chelat-Ionenaustauschern

Cited by 24 publications

References 15 publications

Atomic absorption determination of tin using in situ concentration of stannane in a graphite furnace

Atomic absorption determination of tin using in situ concentration of stannane in a graphite furnace

Role of sample decomposition and preconcentration in elemental trace analysis

Synthesis, characterization and determination of the metal ions adsorption capacity of cellulose modified with p-aminobenzoic groups

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