Speciation of Arsenic and Cadmium Compounds by Reversed-Phase Ion-Pair LC with Single-Wavelength Inductively Coupled Plasma Detection

Nisamaneepong, Wipawan; Ibrahim, Mona; Gilbert, T. W.; Caruso, Joseph A.

doi:10.1093/chromsci/22.11.473

Cited by 27 publications

(3 citation statements)

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“…Arsenic and cadmium compounds were determined at the As emission wavelength of 228.812 nm, using also the Cd emission line at 228.802 nm. Detection limits for 50 ml injections were 2.6 ngjs (3.1 ng/ml) for As as arsenite and 0.059 ngjs (0.12 ngjml) for Cd as the nitrilotriacetate [93].…”

Section: I 7i Hplc-icp Detectionmentioning

confidence: 95%

Determination of trace elements by chromatographic methods employing atomic plasma emission spectroscopic detection

Uden

1994

Determination of Trace Elements

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Section: I 7i Hplc-icp Detectionmentioning

confidence: 95%

Determination of trace elements by chromatographic methods employing atomic plasma emission spectroscopic detection

Uden

1994

Determination of Trace Elements

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“…The method has been used for rice flour, fish and shellfish, and biological samples that contain a range of arsenic species. [22][23][24][25][26][27][28][29][30][31][32][33][34] However, the peaks for As(III) and MMAA are very close together, as are those for DMAA and AsB, and TMAO and TeMA. If many analyses are carried out on one column, some degradation of the packing might occur and these pairs of peaks would possibly not be separated.…”

Section: Introductionmentioning

confidence: 92%

Reversed Phase Column HPLC-ICP-MS Conditions for Arsenic Speciation Analysis of Rice Flour

Narukawa¹,

Matsumoto

Nishimura

et al. 2015

ANAL. SCI.

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New measurement conditions for arsenic speciation analysis of rice flour were developed using HPLC-ICP-MS equipped with a reversed phase ODS column. Eight arsenic species, namely, arsenite [As(III)], arsenate [As(V)], monomethylarsonic acid (MMAA), dimethylarsinic acid (DMAA), trimethylarsine oxide (TMAO), tetramethylarsonium (TeMA), arsenobetaine (AsB) and arsenocholine (AsC), were separated and determined under the proposed conditions. In particular, As(III) and MMAA and DMAA and AsB were completely separated using a newly proposed eluent containing ammonium dihydrogen phosphate. Importantly, the sensitivity changes, in particular those of As(V) and As(III) caused by coexisting elements and by complex matrix composition, which had been problematical in previously reported methods, were eliminated. The new eluent can be applied to C8, C18 and C30 ODS columns with the same effectiveness and with excellent repeatability. The proposed analytical method was successfully applied to extracts of rice flour certified reference materials.

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“…Because atoms produce line emission a t specific wavelengths that are characteristic for each element, chromatographic peak overlap problems may be overcome by monitoring the emission wavelength of an atom contained only in the molecule of interest. Most HPLC-plasma spectroscopy techniques developed thus far have been limited to the detection of metals (14)(15)(16)(17)(18)(19)(20)(21). For the determination of nonmetals with the He-MIP, direct nebulization of LC effluent directly into the plasma has been successful (22).…”

Section: Introductionmentioning

confidence: 99%

Moving wheel liquid chromatography-helium microwave-induced plasma interface

Zhang¹,

Carnahan²,

Winans³

et al. 1989

Anal. Chem.

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An Interface between a liquid chromatograph and an atmospheric pressure helium microwave-Induced plasma for halogen-selective detection Is presented. Halides and oxohalogens are separated by anion-exchange hlgh-performance ilqukl chromatography and directed, as a mist, to a continuously moving wheel interface. The aqueous solvent Is evaporated with a flow of hot nitrogen, leaving the anaiyte In residue form.The moving wheel then carries the dry anaiyte Into the plasma where it Is volatilized, atomized, and excited. The plasma Is a small-volume helium microwave-induced plasma operated at 100 W with a helium support gas flow of 3.1 L/min. Selectivity is observed when the elemental signals of coelutlng peaks are monitored. Detection limits are In the range of 0.4-20 pg of halogen. When this system Is used wlthout the chromatographic column for bulk solution analysis, halogen detection iimHs range from 0.2 to 20 pg/mL.

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Speciation of Arsenic and Cadmium Compounds by Reversed-Phase Ion-Pair LC with Single-Wavelength Inductively Coupled Plasma Detection

Cited by 27 publications

References 0 publications

Determination of trace elements by chromatographic methods employing atomic plasma emission spectroscopic detection

Determination of trace elements by chromatographic methods employing atomic plasma emission spectroscopic detection

Reversed Phase Column HPLC-ICP-MS Conditions for Arsenic Speciation Analysis of Rice Flour

Moving wheel liquid chromatography-helium microwave-induced plasma interface

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