Simultaneous determination of palladium, platinum, rhodium and gold by on-line solid phase extraction and high performance liquid chromatography with 5-(2-hydroxy-5-nitrophenylazo)thiorhodanine as pre-column derivatization regents

Hu, Qiu‐Fen; Yang, Xiangjun; Huang, Zhangjie; Chen, Jing; Yang, Guangyu

doi:10.1016/j.chroma.2005.07.090

Cited by 59 publications

(16 citation statements)

References 21 publications

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“…Various solid phase extraction materials have been successfully used for the preconcentration and separation of heavy metal ions at trace levels [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Study on solid phase extraction and graphite furnace atomic absorption spectrometry for the determination of nickel, silver, cobalt, copper, cadmium and lead with MCI GEL CHP 20Y as sorbent

Yang

Fen

Lei

et al. 2009

Journal of Hazardous Materials

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“…Various solid phase extraction materials have been successfully used for the preconcentration and separation of heavy metal ions at trace levels [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Study on solid phase extraction and graphite furnace atomic absorption spectrometry for the determination of nickel, silver, cobalt, copper, cadmium and lead with MCI GEL CHP 20Y as sorbent

Yang

Fen

Lei

et al. 2009

Journal of Hazardous Materials

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“…Ion-pair RP HPLC (IP-RPHPLC) offers both sensitivity and selectivity owing to the large degree of flexibility in the separation parameters. Several chelating agents have been successively used as a derivatizing reagent such as 4-(2-pyridylazo)resorcinol (PAR) [10], 5-(2-hydroxy-5-nitrophenylazo)thiorhodamine [12], 2,4-dihydroxybenzylidenethiorhodamine [13], 1-(4-aminobenzyl) ethylenediamine-N,N,N9,N(-tetraacetate [14], 2-(5-bromo-2-pyridylazo)-5-(N-propyl-N-(3-sulfopropylamino)aniline (5-Br-PSAA) [15], and 2-(5-nitro-2-pyridylazo)-5-[N-propyl-N-(3-sulfopropyl)amino]phenol (nitro-PAPS) [16].…”

Section: Introductionmentioning

confidence: 99%

High‐performance liquid chromatography with sequential injection for online precolumn derivatization of some heavy metals

Burakham¹,

Srijaranai²,

Grudpan³

2007

J of Separation Science

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HPLC was coupled with sequential injection (SI) for simultaneous analyses of some heavy metals, including Co(II), Ni(II), Cu(II), and Fe(II). 2-(5-Nitro-2-pyridylazo)-5-[N-propyl-N-(3-sulfopropyl)amino]phenol (nitro-PAPS) was employed as a derivatizing reagent for sensitive spectrophotometric detection by online precolumn derivatization. The SI system offers an automated handling of sample and reagent, online precolumn derivatization, and propulsion of derivatives to the HPLC injection loop. The metal-nitro-PAPS complexes were separated on a C(18)-muBondapak column (3.9x300 mm(2)). Using the proposed SI-HPLC system, determination of four metal ions by means of nitro-PAPS complexes was achieved within 13 min in which the parallel of derivatization and separation were processed at the same time. Linear calibration graphs were obtained in the ranges of 0.005-0.250 mg/L for Cu(II), 0.007-1.000 mg/L for Co(II), 0.005-0.075 mg/L for Ni(II), and 0.005-0.100 mg/L for Fe(II). The system provides means for automation with good precision and minimizing error in solution handling with the RSD of less than 6%. The detection limits obtained were 2 microg/L for Cu(II) and Co(II), and 1 microg/L for Ni(II) and Fe(II). The method was successfully applied for the determination of metal ions in various samples, including milk powder for infant, mineral supplements, local wines, and drinking water.

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“…In recent years, the development of analytical methods for the extraction and determination of Pd contents in various matrices have attracted considerable interest. Solid-phase extraction in conjunction with different determination methods [6][7][8][9], ionimprinted polymer extraction with spectrophotometric detection [10], HPLC and on-line SPE-HPLC [11][12], stopped flow injection liquid-liquid extraction with spectrophotometeric detection [13] and FIA-FAAS system including on-line SPE [14] have been reported for extraction and determination of Pd.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, HPLC [12], atomic absorption spectrometry (AAS) [15,16], ICP-MS after cloud point extraction [17] and solid-phase extraction-AAS [18] have been employed for determination of Au in various matrices.…”

Section: Introductionmentioning

confidence: 99%

Development of cloud point extraction for simultaneous extraction and determination of gold and palladium using ICP-OES

Tavakoli

Yamini

Ebrahimzadeh

et al. 2008

Journal of Hazardous Materials

127

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Simultaneous determination of palladium, platinum, rhodium and gold by on-line solid phase extraction and high performance liquid chromatography with 5-(2-hydroxy-5-nitrophenylazo)thiorhodanine as pre-column derivatization regents

Cited by 59 publications

References 21 publications

Study on solid phase extraction and graphite furnace atomic absorption spectrometry for the determination of nickel, silver, cobalt, copper, cadmium and lead with MCI GEL CHP 20Y as sorbent

Study on solid phase extraction and graphite furnace atomic absorption spectrometry for the determination of nickel, silver, cobalt, copper, cadmium and lead with MCI GEL CHP 20Y as sorbent

High‐performance liquid chromatography with sequential injection for online precolumn derivatization of some heavy metals

Development of cloud point extraction for simultaneous extraction and determination of gold and palladium using ICP-OES

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