Abstract
The sensitivity of on-line vapor generation atomic absorption spectrometry of mercury and selenium was improved by using a new atom trap technology. The inner wall of a T-shaped quartz tube was coated with nanometer SiO2 so increase the residence time of the analyte atoms in the light path. The linear range of the calibration plots thus was increased to a range from 5.0 to 150 ng mL−1 for mercury, and from 4.5 to 100 ng mL−1 for selenium. The detection limits are 0.9 ng mL−1 for Hg and 1.0 ng mL−1 for Se which is a 2-fold improvement. The technique was applied to the determination of Hg and Se in herbs and hair.
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Sun HW, Ha J, Sun JM, Zhang DQ, Yang LL (2002) Hydride generation for the direct determination of trace and ultra-trace level of arsenic and antimony in waters using derivative atomic absorption spectrometry. Anal Bioanal Chem 374:526–529
Li SX, Deng NS, Zheng FY (2003) Speciation analysis of iron in traditional Chinese medicine by flame atomic absorption spectrometry. J Pharm Biomed Anal 32:51–57
Li SX, Deng NS, Zheng FY (2004) Effect of digestive site acidity and compatibility on the species, lipophily and bioavailability of coordinated complex of iron, manganese and zinc in Prunus persica Batsch and Carthamus tinctorus. Bioorg Med Chem Lett 14:505–510
Li SX, Zheng FY, Liu XL, Cai WL (2005) Speciation analysis and the bioavailability assessment of manganese in phytomedicine by extraction with octanol and determination by flame atomic absorption spectrometry. Phytochem Anal 16:405–410
Zheng FY, Li SX, Lin LX (2007) Assessment of bioavailability and risk of iron in phytomedicines Aconitum carmichaeli and Paeonia lactiflora. J Trace Elem Med Biol 21:77–83
Li SX, Zheng FY (2008) Speciation analysis, bioavailability and risk assessment of copper complexes in phytomedicines using flame atomic absorption spectrometry. Planta Med 74:1302–1307
Chan K (2003) Some aspects of toxic contaminants in herbal medicines. Chemosphere 52:1361–1371
Alonso MJL, Barrera AB, Juan JAC, Bermúdez JMF, Barrera PB (2005) Selenium levels in related biological samples: human placenta, maternal and umbilical cord blood, hair and nails. J Trace Elem Med Biol 19:49–54
McDowell MA, Dillon CF, Osterloh J, Bolger PM, Pellizzari E, Fernando R, Montes de Oca R, Schober SE, Sinks T, Jones RL, Mahaffey KR (2004) Hair mercury levels in US children and women of childbearing age: reference range data from NHANES 1999–2000. Environ Health Perspect 112:1165–1171
Legrand M, Sousa Passos CJ, Mergler D, Chan HM (2005) Biomonitoring of mercury exposure with single human hair strand. Environ Sci Technol 39:4594–4598
Li Z, Wei Q, Yuan R, Zhou X, Liu HZ, Shan HX, Song QJ (2007) A new room temperature ionic liquid 1-butyl-3-trimethylsilylimidazolium hexafluorophosphate as a solvent for extraction and preconcentration of mercury with determination by cold vapor atomic absorption spectrometry. Talanta 71:68–72
Ashkenani H, Dadfarnia S, Shabani AMH, Jaffari AA, Behjat A (2009) Preconcentration, speciation and determination of ultra trace amounts of mercury by modified octadecyl silica membrane disk/electron beam irradiation and cold vapor atomic absorption spectrometry. J Hazard Mater 161:276–280
Goldhaber SB (2003) Trace element risk assessment: essentiality vs. toxicity. Regul Toxicol Pharm 38:232–242
Coo LD, Martinez IS (2004) Nafion-based optical sensor for the determination of selenium in water samples. Talanta 64:1317–1322
Choudhury RP, Garg AN (2007) Variation in essential, trace and toxic elemental contents in Murraya koenigii—a spice and medicinal herb from different Indian states. Food Chem 104:1454–1463
Martinis EM, Bertón P, Olsina RA, Altamirano JC, Wuilloud RG (2009) Trace mercury determination in drinking and natural water samples by room temperature ionic liquid based-preconcentration and flow injection-cold vapor atomic absorption spectrometry. J Hazard Mater 167:275–481
Torres DP, Antunes Vieira M, Schwingel Ribeiro A, Curtius AJ (2005) Determination of inorganic and total mercury in biological samples treated with tetramethylammonium hydroxide by cold vapor atomic absorption spectrometry using different temperatures in the quartz cell. J Anal Atom Spectrom 20:289–294
Geng WH, Nakajima T, Takanashi H, Ohki A (2008) Determination of mercury in ash and soil samples by oxygen flask combustion method—–cold vapor atomic fluorescence spectrometry (CVAFS). J Hazard Mater 154:325–330
Labatzke T, Schlemmer G (2004) Ultratrace determination of mercury in water following EN and EPA standards using atomic fluorescence spectrometry. Anal Bioanal Chem 378:1075–1082
Bramanti E, Lomonte C, Onor M, Zamboni R, D’Ulivo A, Raspi G (2005) Mercury speciation by liquid chromatography coupled with on-line chemical vapour generation and atomic fluorescence spectrometric detection (LC-CVGAFS). Talanta 66:762–768
Santos EJ, Herrmann AB, AntunesVieira M, Azzolin Frescura VL, Curtius AJ (2005) Evaluation of slurry preparation procedures for the determination of mercury by axial view inductively coupled plasma optical emission spectrometry using on-line cold vapor generation. Spectrochim Acta B 60:659–665
Grindlay G, Mora J, Gras L, Loos-Vollebregt MTC (2009) Ultratrace determination of Pb, Se and As in wine samples by electrothermal vaporization inductively coupled plasma mass spectrometry. Anal Chim Acta 652:154–160
Kuo CY, Jiang SJ (2008) Determination of selenium and tellurium compounds in biological samples by ion chromatography dynamic reaction cell inductively coupled plasma mass spectrometry. J Chromatogr A 1181:60–66
Elci L, Arslan Z, Tyson JF (2009) Determination of lead in wine and rum samples by flow injection-hydride generation-atomic absorption spectrometry. J Hazard Mater 162:880–885
Ataman OY (2008) Vapor generation and atom traps: atomic absorption spectrometry at the ng/L level. Spectrochim Acta B 63:825–834
Cui Y, Chang X, Zhai Y, Zhu X, Zheng H, Lian N (2006) ICP-AES determination of trace elements after preconcentrated with p-dimethylaminobenzaldehyde-modified nanometer SiO2 from sample solution. Microchem J 83:35–41
Hsu HT, Ting CY, Mou CY, Wan BZ (2003) Nanoporous SiO2 films prepared by surfactant templating method-a novel antireflective coating technology. Stud Surf Sci Catal 146:539–542
Wang J, Zhang CR, Feng J (2005) Preparation of nanoporous silica film and research on its optical properties. High Technology Letters (in Chin) 15:55–56
Bass DA, Hickok D, Quig D, Urek K (2001) Trace element analysis in hair: factors determining accuracy, precision, and reliability. Alt Med Rev 6:472–481
Acknowledgments
This work was supported by the National Natural Science Foundation of China (No. 20775067), the Science & Technology Committee of Fujian Province, China (No. 2008F5063), the Program for New Century Excellent Talents in Fujian Province University (No. 200720), and the Education Committee of Fujian Province, China (200908).
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Cai, TS., Li, SX. Sensitivity enhancement using nanometer silica particles on the surface of a quartz cell in mercury and selenium determination by vapor generation atomic absorption spectrometry. Microchim Acta 171, 11–16 (2010). https://doi.org/10.1007/s00604-010-0398-x
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DOI: https://doi.org/10.1007/s00604-010-0398-x