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Hirata T, Kobayashi K, Khoo HH, Shikino O, Asanuma H. Detection of several volatile organic compounds through Ar + induced chemical ionisation using inductively coupled plasma-tandem mass spectrometry (ICP-MS/MS). Analyst 2024. [PMID: 39318196 DOI: 10.1039/d4an00996g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/26/2024]
Abstract
A new analytical technique for detection of organic compounds using inductively coupled plasma-tandem mass spectrometry (ICP-MS/MS) is described. Volatile organic compounds (VOCs) were introduced into the collision/reaction cell (CRC), instead of through the ICP ion source, and the molecules were ionised through an ion reaction, induced by collision with the primary ions (Ar+) produced in the ICP. The ionisation characteristics of this new approach were investigated by mass spectrometric analysis of eight VOCs (i.e., benzene, toluene, ethyl acetate, methyl butyrate, ethyl butyrate, pentyl acetate, pyridine, and 2-methylfuran). These molecules were detected as molecular ions (M+), protonated ions ([M + H]+), or deprotonated ions ([M - H]+), demonstrating that soft ionisation was achieved by the present ionisation protocol using ICP-MS/MS. In addition, a volatile selenium-containing organic compound, dimethyl diselenide (Se2(CH3)2), was also analysed to investigate the feasibility of this ionisation protocol to achieve soft and hard ionisation simultaneously. Several Se-related ions such as Se+, SeH+, Se2+, [SeCH3]+, and [Se2CH3]+, together with [Se2(CH3)2]+, were observed, suggesting that while soft ionisation was possible, ion reaction-induced-fragmentation and hard ionisation also occurred. To demonstrate the analytical capability of the present technique, volatile components released from coffee beans were subjected to the present mass spectrometric analysis. Many ion peaks originating from VOCs were detected from the coffee beans. The data obtained here demonstrated that ICP-MS equipped with a CRC can become an effective tool for analyzing both elements and molecules.
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Affiliation(s)
- Takafumi Hirata
- Geochemical Research Center, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan.
| | - Kyoko Kobayashi
- PerkinElmer Japan, 1-1-32 Shin'urashima, Kanagawa-ku, Yokohama City 221-0031, Japan
| | - Hui Hsin Khoo
- Geochemical Research Center, The University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan.
| | - Osamu Shikino
- PerkinElmer Japan, 1-1-32 Shin'urashima, Kanagawa-ku, Yokohama City 221-0031, Japan
| | - Hisashi Asanuma
- Human and Environmental Studies/Materials Science, Kyoto University, Nihonmatsu-cho, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan
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Luo J, Hu Z, Xu F, Geng D, Tang X. MIL-125-NH2 catalyzed photochemical vapor generation coupled with HPLC-ICPMS for speciation analysis of selenium. Microchem J 2022. [DOI: 10.1016/j.microc.2021.107053] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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3
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In-vivo solid phase microextraction for quantitative analysis of volatile organoselenium compounds in plants. Anal Chim Acta 2019; 1081:72-80. [DOI: 10.1016/j.aca.2019.06.061] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 06/18/2019] [Accepted: 06/28/2019] [Indexed: 12/12/2022]
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Abstract
Abstract
The role of selenium has been changed over the last decade. The element that was previously considered to be toxic turned out to be present in the human body in amounts of 10–15 mg, and almost every cell of our body contains it. Selenium contributes to growth, supports healthy muscle activity, reproductive organs, reduces the toxicity of certain elements such as mercury, supports the immune system, and even delays the spread of certain viruses (influenza, Ebola, HIV). Selenium-deficient areas of Europe could be a risk for their populations. The recommended daily intake (RDA) of selenium is 55 µg/day, while WHO and FAO have set up the daily tolerable dose at 400 µg/day. We must count with the harmful effects of selenium overdose, but it is almost impossible to introduce this amount into our body solely with food. Our selenium sources can be refilled with food supplements or selenium-enriched functional foods. In the review article, we report about the role of selenium in the environment, selenium-enriched plants, selenium-enriched yeast, the role of selenium in animal feed and in the human body, the opportunities of selenium restoration, selenium-enriched animal products, and the selenium content of milk.
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Pagliano E, Campanella B, D'Ulivo A, Mester Z. Derivatization chemistries for the determination of inorganic anions and structurally related compounds by gas chromatography - A review. Anal Chim Acta 2018; 1025:12-40. [DOI: 10.1016/j.aca.2018.03.043] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 03/21/2018] [Accepted: 03/22/2018] [Indexed: 12/12/2022]
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6
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Detection of rare species of volatile organic selenium metabolites in male golden hamster urine. Anal Bioanal Chem 2016; 408:4927-34. [DOI: 10.1007/s00216-016-9579-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2016] [Revised: 04/11/2016] [Accepted: 04/18/2016] [Indexed: 10/21/2022]
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7
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Ghasemi E, Farahani H. Head space solid phase microextraction based on nano-structured lead dioxide: Application to the speciation of volatile organoselenium in environmental and biological samples. J Chromatogr A 2012; 1258:16-20. [DOI: 10.1016/j.chroma.2012.08.027] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Revised: 08/08/2012] [Accepted: 08/09/2012] [Indexed: 11/27/2022]
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8
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Gomes da Silva E, Augusto F, Arruda MAZ. Determination of Se using a solid-phase micro-extraction device coupled to a graphite furnace and detection by gas chromatography-mass spectrometry. Analyst 2012; 137:3841-6. [DOI: 10.1039/c2an35598a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Determination of dimethylsulfide and dimethylselenide in human urine by portable gas chromatography–photoionization detection with headspace sampling. Microchem J 2011. [DOI: 10.1016/j.microc.2011.06.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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10
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Dai J, Ren FL, Tao CY, Bai Y. Synthesis of cross-linked chitosan and application to adsorption and speciation of Se (VI) and Se (IV) in environmental water samples by inductively coupled plasma optical emission spectrometry. Int J Mol Sci 2011; 12:4009-20. [PMID: 21747721 PMCID: PMC3131605 DOI: 10.3390/ijms12064009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2011] [Revised: 05/29/2011] [Accepted: 06/09/2011] [Indexed: 11/29/2022] Open
Abstract
A new type of cross-linked chitosan was synthesized with Diethylene Triamine (DCCTS). The adsorption of Se (VI) on DCCTS was studied. The effect factors on adsorption and the adsorption mechanism were considered. The results indicated that the DCCTS could concentrate and separate Se (IV) at pH = 3.6; the maximum adsorption efficiency was 94%, the adsorption equilibrium time was 30 min; the maximum adsorption capacity was 42.7 mg/g; the adsorption fitted Langmuir equation. A novel method for speciation of Se (VI) and Se (IV) in environmental water samples has been developed using DCCTS as adsorbent and ICP–OES as determination means. The detection limit of this method was 12 ng/L, the relatively standard deviation was 4.5% and the recovery was 99%~104%.
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Affiliation(s)
- Jun Dai
- College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China; E-Mail:
- College of Chemistry and Chemical Engineering, Jiujiang University, Jiujiang, Jiangxi 332005, China; E-Mails: (C.Y.T.); (Y.B.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +86-792-8313635
| | - Feng Lian Ren
- College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan 410083, China; E-Mail:
| | - Chun Yuan Tao
- College of Chemistry and Chemical Engineering, Jiujiang University, Jiujiang, Jiangxi 332005, China; E-Mails: (C.Y.T.); (Y.B.)
| | - Yang Bai
- College of Chemistry and Chemical Engineering, Jiujiang University, Jiujiang, Jiangxi 332005, China; E-Mails: (C.Y.T.); (Y.B.)
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11
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Ghasemi E, Sillanpää M, Najafi NM. Headspace hollow fiber protected liquid-phase microextraction combined with gas chromatography-mass spectroscopy for speciation and determination of volatile organic compounds of selenium in environmental and biological samples. J Chromatogr A 2010; 1218:380-6. [PMID: 21185031 DOI: 10.1016/j.chroma.2010.12.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2010] [Revised: 11/29/2010] [Accepted: 12/02/2010] [Indexed: 10/18/2022]
Abstract
A simple and novel speciation method for the determination of volatile organic compounds of selenium (dimethylselenide (DMSe) and dimethyldiselenide (DMDSe) has been developed using a headspace hollow fiber protected liquid-phase microextraction (HS-HF-LPME) combined with capillary gas chromatography-mass spectrometry (GC-MS). The organic solvent impregnated in the pores and filled inside the porous hollow fiber membrane was used as an extraction interface in the HS-HF-LPME of the compounds. The effect of different variables on the extraction efficiency was studied simultaneously using an experimental design. The variables of interest in the HS-HF-LPME were sample volume, extraction time, temperature of sample solution, ionic strength, stirring rate and dwelling time. A Plackett-Burman design was performed for screening in order to determine the significant variables affecting the extraction efficiency. Then, the significant factors were optimized by a Box-Behnken design (BBD) and the response surface equations were derived. Under optimum conditions, preconcentration factors up to 1250 and 1170 were achieved for DMSe and DMDSe respectively. The detection limit and relative standard deviation (RSD) (n=5, c=50 μg L(-1)) for DMSe were 65 ng L(-1) and 4.8%, respectively. They were also obtained for DMDSe as 57 ng L(-1) and 3.9%, respectively. The developed technique was found to be applicable to spiked environmental and biological samples.
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Affiliation(s)
- Ensieh Ghasemi
- Department of Chemistry, Faculty of Science, Shahid Beheshti University, G.C., Evin, Tehran, Iran
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12
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Kartal Ş, Oymak T, Tokalıoǧlu Ş. Spectrophotometric determination of selenium(IV) with 4-methyl-o-phenylenediamine based on piazselenol formation. JOURNAL OF ANALYTICAL CHEMISTRY 2010. [DOI: 10.1134/s106193481012004x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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Campillo N, Peñalver R, López-García I, Hernández-Córdoba M. Headspace solid-phase microextraction for the determination of volatile organic sulphur and selenium compounds in beers, wines and spirits using gas chromatography and atomic emission detection. J Chromatogr A 2009; 1216:6735-40. [PMID: 19700163 DOI: 10.1016/j.chroma.2009.08.019] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2009] [Revised: 07/25/2009] [Accepted: 08/10/2009] [Indexed: 11/24/2022]
Abstract
A rapid and solvent-free method for the determination of eight volatile organic sulphur and two selenium compounds in different beverage samples using headspace solid-phase microextraction and gas chromatography with atomic emission detection has been developed. The bonded carboxen/polydimethylsiloxane fiber was the most suitable for preconcentrating the analytes from the headspace of the sample solution. Volumes of 20 mL of undiluted beer were used while, in the case of wines and spirits, sample:water ratios of 5:15 and 2:18, respectively, were used, in order to obtain the maximum sensitivity. Quantitation was carried out by using synthetic matrices of beer and wine, and a spiked sample for spirits, and using ethyl methyl sulphide and isopropyl disulphide as internal standards. Detection limits ranged from 8 ng L(-1) to 40 ng mL(-1), depending on the compound and the beverage sample analyzed, with a fiber time exposure of 20 min at ambient temperature. The optimized method was successfully applied to different samples, some of the studied compounds being detected at concentration levels in the 0.04-152 ng mL(-1) range.
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Affiliation(s)
- Natalia Campillo
- Department of Analytical Chemistry, Faculty of Chemistry, University of Murcia, E-30071 Murcia, Spain
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14
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Bidari A, Hemmatkhah P, Jafarvand S, Milani Hosseini MR, Assadi Y. Selenium analysis in water samples by dispersive liquid-liquid microextraction based on piazselenol formation and GC–ECD. Mikrochim Acta 2008. [DOI: 10.1007/s00604-008-0003-8] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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15
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Campillo N, Peñalver R, Hernández-Córdoba M, Pérez-Sirvent C, Martínez-Sánchez MJ. Comparison of two derivatizing agents for the simultaneous determination of selenite and organoselenium species by gas chromatography and atomic emission detection after preconcentration using solid-phase microextraction. J Chromatogr A 2007; 1165:191-9. [PMID: 17692323 DOI: 10.1016/j.chroma.2007.07.064] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2007] [Revised: 07/23/2007] [Accepted: 07/26/2007] [Indexed: 11/15/2022]
Abstract
Two methods for the simultaneous determination of selenite and two organoselenium compounds, dimethylselenide (DMSe) and dimethyldiselenide (DMDSe), are proposed. Both methods involve sample preconcentration by solid-phase microextraction (SPME) and capillary gas chromatography coupled to atomic emission detection (GC-AED). The main difference between the methods is the derivatizing agent used to complex the inorganic species: sodium tetraethylborate and 4,5-dichloro-1,2-phenylenediamine. The parameters affecting the derivatization and preconcentration steps, chromatographic separation as well as detection of the compounds were optimized. Direct immersion (DI) mode and a relatively long extraction time were selected for the method involving the formation of the piazselenol complex, better sensitivity being achieved for the three analytes under study. In this case, detection limits ranged between 3 and 25 ng L(-1), depending on the compound. Headspace mode (HS) and extraction times of 20 min were selected for the method involving tetraalkylborate, and detection limits of between 7.3 and 55 ng L(-1) were obtained. DMSe and Se(IV) were found in several of the water samples analyzed at concentrations of 0.07-1.0 ng mL(-1).
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Affiliation(s)
- Natalia Campillo
- Department of Analytical Chemistry, Faculty of Chemistry, University of Murcia, E-30071 Murcia, Spain
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16
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Campillo N, Aguinaga N, Viñas P, López-García I, Hernández-Córdoba M. Gas chromatography with atomic emission detection for dimethylselenide and dimethyldiselenide determination in waters and plant materials using a purge-and-trap preconcentration system. J Chromatogr A 2005; 1095:138-44. [PMID: 16275294 DOI: 10.1016/j.chroma.2005.08.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2005] [Revised: 07/25/2005] [Accepted: 08/01/2005] [Indexed: 10/25/2022]
Abstract
Dimethylselenide (DMSe) and dimethyldiselenide (DMDSe) were determined in plant and water samples by capillary gas chromatography using microwave induced-plasma atomic emission spectrometry for detection. The analytes were leached from the solid samples into methanol by using an ultrasonic probe, and a portion of the extract was preconcentrated by means of a purge-and-trap system before being chromatographed. The analytes were directly purged from the water samples in the presence of 6% (v/v) methanol. Element-specific detection and quantification was carried out by monitoring the selenium (196 nm) emission line. Calibration curves were obtained by plotting peak area versus concentration and the correlation coefficients for linear calibration were 0.9999 for both analytes. Detection limits of 0.8 and 1.1 ng l(-1) were obtained for DMSe and DMDSe, respectively, for water samples. For plant materials, the detection limits calculated for 0.5 g samples were 0.3 and 0.4 ng g(-1) for DMSe and DMDSe, respectively. Concentration levels of DMSe ranging from 1.2 to 4.2 ng g(-1) were found in some of the plant materials analyzed. No DMDSe was found in any of the samples. The accuracy of the method was checked by analyzing different spiked water and plant samples.
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Affiliation(s)
- Natalia Campillo
- Department of Analytical Chemistry, Faculty of Chemistry, University of Murcia, Spain
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17
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Lu CY, Yan XP. Capillary electrophoresis on-line coupled with hydride generation-atomic fluorescence spectrometry for speciation analysis of selenium. Electrophoresis 2005; 26:155-60. [PMID: 15624179 DOI: 10.1002/elps.200406102] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
A new method for speciation analysis of two inorganic selenium species was developed by on-line coupling of capillary electrophoresis (CE) with hydride generation-atomic fluorescence spectrometry (HG-AFS) and on-line conversion of Se(VI) to Se(IV). Baseline separation of Se(VI) and Se(IV) was achieved by CE in a 50 cm x 75 microm inside diameter (ID) fused-silica capillary at -20 kV using a mixture of 15 mmol.L(-1) NaH2PO4 and 0.5 mmol.L(-1) cetyltrimethylammonium bromide (pH 7.5) as electrolyte buffer. Se(VI) was on-line reduced to Se(IV) by mixing the CE effluent with concentrated HCl. The precision (relative standard deviation, RSD, n=7) ranged from 0.7 to 1.3% for migration time, 6.4 to 3.7% for peak height response, and 5.9 to 6.1% for peak area for the two selenium species at the 500 microg.L(-1) (as Se) level. The detection limits were 33 and 25 microg.L(-1) (as Se) for Se(VI) and Se(IV), respectively. The recoveries of the two selenium species in five locally collected water samples ranged from 88 to 114%. The developed method was applied to speciation analysis of inorganic selenium species in spiked natural water samples.
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Affiliation(s)
- Cai-Yan Lu
- State Key Laboratory of Functional Polymer Materials for Adsorption and Separation, Research Center for Analytical Sciences, Department of Chemistry, Nankai University, Tianjin, China
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Orero Iserte L, Roig-Navarro A, Hernández F. Simultaneous determination of arsenic and selenium species in phosphoric acid extracts of sediment samples by HPLC-ICP-MS. Anal Chim Acta 2004. [DOI: 10.1016/j.aca.2004.08.001] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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19
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Hunter WJ, Kuykendall LD. Determination of dimethylselenide and dimethyldiselenide by gas chromatography–photoionization detection. J Chromatogr A 2004; 1038:295-7. [PMID: 15233545 DOI: 10.1016/j.chroma.2004.03.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
A simple method for the determination of volatile selenium compounds employing a gas chromatograph equipped with a photoionization detector is described. The method involves the direct injection of dimethylselenide (DMS) or dimethyldiselenide (DMDS) into the gas chromatograph; no derivatization of the sample was required. The photoionization detector was capable of detecting 60 pg (0.55 pmol) of DMS and 150pg (0.80pmol) DMDS. Sensitivity was 10-50 times greater with DMS and 4-20 times greater with DMDS when the photoionization detector was employed than when the flame ionization detector was employed.
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Affiliation(s)
- William J Hunter
- US Department of Agriculture, Agricultural Research Service, Suite 100, 2150D Centre Avenue, Fort Collins, CO 80526-8119, USA.
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20
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Işcioğlu B, Henden E. Determination of selenoamino acids by gas chromatography–mass spectrometry. Anal Chim Acta 2004. [DOI: 10.1016/s0003-2670(03)00888-2] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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21
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Rosenberg E. The potential of organic (electrospray- and atmospheric pressure chemical ionisation) mass spectrometric techniques coupled to liquid-phase separation for speciation analysis. J Chromatogr A 2003; 1000:841-89. [PMID: 12877203 DOI: 10.1016/s0021-9673(03)00603-4] [Citation(s) in RCA: 130] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The use of mass spectrometry based on atmospheric pressure ionisation techniques (atmospheric pressure chemical ionisation, APCI, and electrospray ionisation, ESI) for speciation analysis is reviewed with emphasis on the literature published in and after 1999. This report accounts for the increasing interest that atmospheric pressure ionisation techniques, and in particular ESI, have found in the past years for qualitative and quantitative speciation analysis. In contrast to element-selective detectors, organic mass spectrometric techniques provide information on the intact metal species which can be used for the identification of unknown species (particularly with MS-MS detection) or the confirmation of the actual presence of species in a given sample. Due to the complexity of real samples, it is inevitable in all but the simplest cases to couple atmospheric pressure MS detection to a separation technique. Separation in the liquid phase (capillary electrophoresis or liquid chromatography in reversed phase, ion chromatographic or size-exclusion mode) is particularly suitable since the available techniques cover a very wide range of analyte polarities and molecular mass. Moreover, derivatisation can normally be avoided in liquid-phase separation. Particularly in complex environmental or biological samples, separation in one dimension is not sufficient for obtaining adequate resolution for all relevant species. In this case, multi-dimensional separation, based on orthogonal separation techniques, has proven successful. ESI-MS is also often used in parallel with inductively coupled plasma MS detection. This review is structured in two parts. In the first, the fundamentals of atmospheric pressure ionisation techniques are briefly reviewed. The second part of the review discusses recent applications including redox species, use of ESI-MS for structural elucidation of metal complexes, characterisation and quantification of small organometallic species with relevance to environment, health and food. Particular attention is given to the characterisation of biomolecules and metalloproteins (metallothioneins and phytochelatins) and to the investigation of the interaction of metals and biomolecules. Particularly in the latter field, ESI-MS is the ideal technique due to the softness of the ionisation process which allows to assume that the detected gas-phase ions are a true representation of the ions or ion-biomolecule complexes prevalent in solution. It is particularly this field, important to biochemistry, physiology and medical chemistry, where we can expect significant developments also in the future.
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Affiliation(s)
- Erwin Rosenberg
- Vienna University of Technology, Institute of Chemical Technology and Analytics, Getreidemarkt 91164 AC, A-1060 Vienna, Austria.
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Carvalho KM, McGettigan MJ, Martin DF. GC/MS analysis of volatile organic selenium species produced during phytoremediation. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2001; 36:1403-1409. [PMID: 11545362 DOI: 10.1081/ese-100104887] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The use of plants and microorganisms that can naturally volatilize selenium and remove it from the soil or water has been studied with promising results. It has been shown that selenium can be removed from soils by plant uptake and accumulation, plant volatilization, and removal in the rhizosphere. Preliminary studies indicated that Hydrilla verticillata Royle removed selenium by means of phytovolatilization. Therefore, studies were conducted to examine the volatile products produced during phytoremediation of selenium by hydrilla. Samples were obtained and analyzed by GC/MS. Organoselenium compounds found were dimethyl selenide, dimethyl diselenide, and diethyl diselenide.
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Affiliation(s)
- K M Carvalho
- Institute for Environmental Studies, Department of Chemistry, University of South Florida, Tampa 33620-5250, USA
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