Determination of mercury species in sea-water by liquid chromatography with inductively coupled plasma mass spectrometric detection

Bloxham, Martin J.; Gachanja, Anthony; Hill, Steve J.; Worsfold, Paul J.

doi:10.1039/ja9961100145

Cited by 64 publications

(22 citation statements)

References 12 publications

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“…The concentration of KBH 4 and HCl were the two decisive factors affecting the cold-vapor generation reaction efficiency. The presence of HCl not only provided an acidic media for the cold-vapor generation but also be important for the decomposition of organic mercury.…”

Section: Optimization Of Cold-vapor Generationmentioning

confidence: 99%

“…Low concentration of K 2 S 2 O 8 could not decompose organic mercury completely while high concentration of it influenced the sensitivity, as the excess of K 2 S 2 O 8 would react with KBH 4 in the subsequent reduction tube. Using MMC as a model compound, the concentration of K 2 S 2 O 8 was optimized at different concentration of KBH 4 . Results shown in Fig.…”

Section: Microwave Digestionmentioning

confidence: 99%

“…However, UV detector as a common HPLC detector often gives relatively poor sensitivity towards inorganic and organic mercury [2]. Recently, analytical methods based on HPLC on-line or off-line hyphenation with element-specific detection methods such as atomic absorption spectrometry (AAS) [3], inductively coupled plasma mass spectrometry (ICP-MS) [4] have been used as routine techniques. Although the cold-vapor atomic fluorescence spectrometry (CVAFS) offers simple, sensitive and cost-effective operation, it has not been used as a universal detector for the speciation analysis of mercury compounds yet.…”

Section: Introductionmentioning

confidence: 99%

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Speciation analysis of mercury in seafood by using high-performance liquid chromatography on-line coupled with cold-vapor atomic fluorescence spectrometry via a post column microwave digestion

Liang

Jiang

Liu

et al. 2003

Analytica Chimica Acta

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An automatic system, based on the on-line coupling of high-performance liquid chromatography (HPLC) separation, post column microwave digestion, and cold-vapor atomic fluorescence spectrometry (CVAFS) detection, was proposed for the speciation analysis of four mercury compounds. Post column microwave digestion, in the presence of potassium persulfate (in HCl), was applied in the system to improve the conversion efficiency of three organic mercury compounds into inorganic mercury. Parameters influencing the on-line digestion efficiency and the separation effect were optimized. To avoid water vapor and methanol entering into the atomic fluorescence detector, ice-water mixture bath was used to cool the microwave-digested sample solution. Four mercury species including inorganic mercury chloride (MC), methylmercury chloride (MMC), ethylmercury chloride (EMC) and phenylmercury chloride (PMC) were baseline separated within 13 min by using RP C 18 column with a mobile phase of 50% (v/v) methanol containing 10 mmol l −1 tetrabutyl ammonium bromide and 0.1 mol l −1 sodium chloride pumped at 1.2 ml min −1 . Seafood samples, composed of three gastropod species and two bivalve species from Yantai port, China, have been analyzed by the proposed method. Dogfish muscle (DORM-2) was analyzed to verify the accuracy of the method and the result was in good agreement with the certified value.

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Section: Optimization Of Cold-vapor Generationmentioning

confidence: 99%

Section: Microwave Digestionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Speciation analysis of mercury in seafood by using high-performance liquid chromatography on-line coupled with cold-vapor atomic fluorescence spectrometry via a post column microwave digestion

Liang

Jiang

Liu

et al. 2003

Analytica Chimica Acta

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“…The mobile phase usually contains 2-mercaptoethanol as the counter-ion, 135,138 but other ion pair forming or complexing agents like N,N-disubstituted dithiocarbamates 135,137,139−141 or l-cysteine, 142 have also been used.…”

Section: (A) Mercury Speciation In Environmental Samplesmentioning

confidence: 99%

Trace Metal Speciation with ICP‐MS Detection

Krupp¹,

Séby²,

Martín‐Doimeadios³

et al. 2005

Inductively Coupled Plasma Mass Spectrometry Handbook

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“…2008.05.048 [7], simplifying the sample preparation considerably. However, to reach the detection limits required for environmental analysis, a pre-concentration step is necessary, the various pre-concentration methods used have been reviewed [8] and include on-line [7], and off-line [9] pre-concentration on various materials including C-18 micro-columns [10,11] and sulfhydryl cotton [12]. However, to successfully separate mercury species by HPLC, ion pairing agents such as l-cysteine [13,14] are required, which when coupled with vapour generation and ICP-MS gives detection limits of between 0.03 and 0.11 ng mL −1 .…”

Section: Introductionmentioning

confidence: 99%

Speciation analysis of mercury in seawater from the lagoon of Venice by on-line pre-concentration HPLC–ICP-MS

Cairns

Ranaldo

Hennebelle

et al. 2008

Analytica Chimica Acta

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International audienceA method based on the coupling of HPLC with ICP-MS with an on-line pre-concentration micro-column has been developed for the analysis of inorganic and methyl mercury in the dissolved phase of natural waters. This method allows the rapid pre-concentration and matrix removal of interferences in complex matrices such as seawater with minimal sampling handling. Detection limits of 0.07 ng L−1 for inorganic mercury and 0.02 ng L−1 for methyl mercury have been achieved allowing the determination of inorganic mercury and methyl mercury in filtered seawater from the Venice lagoon. Good accuracy and reproducibility was demonstrated by the repeat analysis of the certified reference material BCR-579 coastal seawater. The developed HPLC separation was shown to be also suitable for the determination of methyl mercury in extracts of the particulate phase

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Determination of mercury species in sea-water by liquid chromatography with inductively coupled plasma mass spectrometric detection

Cited by 64 publications

References 12 publications

Speciation analysis of mercury in seafood by using high-performance liquid chromatography on-line coupled with cold-vapor atomic fluorescence spectrometry via a post column microwave digestion

Speciation analysis of mercury in seafood by using high-performance liquid chromatography on-line coupled with cold-vapor atomic fluorescence spectrometry via a post column microwave digestion

Trace Metal Speciation with ICP‐MS Detection

Speciation analysis of mercury in seawater from the lagoon of Venice by on-line pre-concentration HPLC–ICP-MS

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