Speciation of Tin, Lead, Mercury, Arsenic and Selenium Compounds by Capillary Electrophoresis

Sun, Baoguo; Macka, M; Haddad, Paul R.

doi:10.1080/03067310108044342

Cited by 24 publications

(23 citation statements)

References 86 publications

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“…The AOAC technique needed more perchloric acid, nitric acid, DAN and cyclohexane (60 times, 25 times, 10 times and 2 times more, respectively) than the present one. The limits of detection of other techniques were 1 to 20 µg L -1 for the capillary electrophoresis coupled with different detectors (Sun et al 2001) and between 0.8 and 50 µg L -1 for ETAAS (Sabé at al. 2000).…”

Section: Resultsmentioning

confidence: 99%

Rapid, sensitive and versatile determination of selenium in different biological samples

Giguère¹,

Fortier²,

Matte³

2005

Can. J. Anim. Sci.

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Giguère, A., Fortier, M.-È. and Matte, J. J. 2005. Rapid, sensitive and versatile determination of selenium in different biological samples. Can. J. Anim. Sci. 85: 533-536. The reliable assessment of selenium in biological samples is generally technically difficult to achieve and requires a large amount of material. The described fluorometric method was validated using certified standard material of Durum Wheat Flour, Bovine Muscle Powder, Whole Egg Powder and serum and was tested on pig whole blood and fresh egg. The technique was found to be fast, sensitive and robust for a reliable determination of Se in small amounts (< 50 mg or 100 µL) of biological samples.

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Section: Resultsmentioning

confidence: 99%

Rapid, sensitive and versatile determination of selenium in different biological samples

Giguère¹,

Fortier²,

Matte³

2005

Can. J. Anim. Sci.

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“…Equation (1) shows that the stacked sample plug length is inversely proportional to the field enhancement factor, while Eq. (2) illustrates that the stacking effect depends on the value of g only.…”

Section: Nsm In Uncoated Fused-silica Capillarymentioning

confidence: 99%

Trace determination of arsenic species by capillary electrophoresis with direct UV detection using sensitivity enhancement by counter‐ or co‐electroosmotic flow stacking and a high‐sensitivity cell

2003

Self Cite

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Stacking techniques used independently and also with a high-sensitivity cell (HSC) were employed to optimise sensitivity and detection limits in the direct photometric detection of the following eight arsenic species by capillary zone electrophoresis (CZE): arsenite, arsenate, monomethylarsonic acid (MMA), dimethylarsinic acid (DMA), 4-hydroxy-3-nitrophenylarsonic acid (Roxarsone), p-aminophenylarsonic acid (p-ASA), 4-nitrophenylarsonic acid (4-NPAA), and phenylarsonic acid (PAA) (target analytes). The stacking mechanisms, optimised stacking and separation conditions, and concentration sensitivity enhancement factors were discussed and compared for (i) normal stacking mode (NSM, sometimes also referred to as field-amplified stacking) in an uncoated fused-silica capillary in the counter-electroosmotic flow (EOF) mode, (ii) large-volume sample stacking (LVSS) with polarity switching, and (iii) the less often applied stacking method of co-EOF NSM stacking with EOF reversal using a poly(diallydimethylammonium chloride) (PDDAC)-coated capillary. The optimal injection volumes were 7.4, 60 and 17.2% of the total capillary volume, for the above three methods, respectively. LVSS with polarity switching gave the lowest limit of detection (LOD). The use of the HSC further reduced the LOD of each target analytes by a factor of 5-8 times. By combining LVSS and HSC, LODs of the target analytes could be reduced by a factor of 218-311, to 5.61, 9.15, 11.1, and 17.1 microg/L for As(III), DMA, MMA, and As(V), respectively. The method was demonstrated to be applicable to the determination of the target analytes in tap water and lake water, with recoveries in the range of 89.4-103.3%.

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“…Likewise, recent advances of CE in the speciation analysis of arsenic and sulfur were discussed by Zheng et al [32] and O'Reilly and co-authors [19], respectively. In a compilation by Sun et al [28], a wide spectrum of element species (i.e., Sn, Pb, Hg, Se, and As) were thoroughly covered, with emphasis placed on CE methods feasible for the determination of metallorganic species. Turning to current problems in applying CE to real-world species analysis, these were critically evaluated by Timerbaev [21].…”

Section: Speciation Analysismentioning

confidence: 99%

Recent advances and trends in capillary electrophoresis of inorganic ions

Timerbaev

2002

Electrophoresis

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Capillary electrophoresis (CE) continues its invasion into the domain of inorganic analysis. This review summarizes the progress and significant developments of CE of inorganic ions over the first two years of the new century. As manifested by the substantial number of published articles, this field is still witnessing a growing activity of many separation scientists. To provide an in-depth treatment of fundamental and methodological aspects of inorganic ion analysis by CE, an extensive fraction of the relevant literature is covered whereas only most innovative application reports are briefly considered. Most of the recent advancements have focused on CE system modernization designed to improve a limited detection sensitivity, which still remains a major obstacle to overcome in order to ensure the method's wider practical acceptance. Attention is also given to how and in which directions the future research could be performed to implement CE in routine inorganic analysis.

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Speciation of Tin, Lead, Mercury, Arsenic and Selenium Compounds by Capillary Electrophoresis

Cited by 24 publications

References 86 publications

Rapid, sensitive and versatile determination of selenium in different biological samples

Rapid, sensitive and versatile determination of selenium in different biological samples

Trace determination of arsenic species by capillary electrophoresis with direct UV detection using sensitivity enhancement by counter‐ or co‐electroosmotic flow stacking and a high‐sensitivity cell

Recent advances and trends in capillary electrophoresis of inorganic ions

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