Determination of Arsenic in Vegetable Samples by Hydride
Generation Atomic Absorption Spectrometry

Abstract A procedure is described for the determination of arsenic in vegetable samples by hydride generation atomic absorption spectrometry. The samples are mineralized in a microwave acid digestion bomb with nitric acid in the presence of small amounts of vanadium pentoxide. The determination of arsenic is made by the standard addition method. A certified reference sample is analyzed, and the result obtained agreed well with the certified value. The detection limit (dry weight) was about 0.020 μg/g. Reproducibility relative standard deviations ranged from 6.45% at 0.152 μg A μ/g to 8.31 % at 0.059 μg A μ/g. The concentrations of arsenic in vegetable samples ranged from 0.029 to 0.444 μg/g (fresh weight)

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Determination of Platinum in Wine by Graphite Furnace Atomic Absorption Spectrometry

Journal of AOAC International ◽

10.1093/jaoac/80.1.57 ◽

1997 ◽

Vol 80 (1) ◽

pp. 57-62 ◽

Cited By ~ 7

Author(s):

Carmen Cabrera-Vique ◽

Pierra-Louis Teissedre ◽

Marie-Thérèse Cabanis ◽

Jean-Claude Cabanis

Keyword(s):

Atomic Absorption Spectrometry ◽

Atomic Absorption ◽

Graphite Furnace ◽

Standard Addition ◽

Absorption Spectrometry ◽

Acid Digestion ◽

White Wines ◽

Relative Standard ◽

Graphite Furnace Atomic Absorption

Abstract A method based on graphite furnace atomic absorption spectrometry (GFAAS) was developed for determining platinum in wine. Wine samples were prepared by microwave acid digestion or dry mineralization. The method of standard addition was used for Pt determination in untreated wine samples and mineralized samples. Analyte modifiers and furnace conditions were optimized. Effects of cations (Mg2+, Ca2+, K+, Na+, and NH|) and anions (PO43, SO42) were tested separately and in combination. Analytical characteristics of the method were optimized for analyte recovery and signal enhancement. Recoveries ranged from 92.5 to 102%, and precision reproducibility relative standard deviation varied from 7.5 to 10%. Red, rosé, and white wines from France were analyzed. Platinum levels found in most wines were very low (<10 μg/L).

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Determination of Total Arsenic and Selenium in Soils and Plants by Atomic Absorption Spectrometry with Hydride Generation and Flow Injection Analysis Coupled Techniques

Journal of AOAC International ◽

10.1093/jaoac/79.3.764 ◽

1996 ◽

Vol 79 (3) ◽

pp. 764-768 ◽

Cited By ~ 15

Author(s):

Oroncio Jiménez De Blas ◽

N Rodriguez Mateos ◽

A Garcia Sanchez

Keyword(s):

Atomic Absorption Spectrometry ◽

Atomic Absorption ◽

Flow Injection ◽

Flow Injection Analysis ◽

Hydride Generation ◽

Absorption Spectrometry ◽

Sample Treatment ◽

Total Arsenic ◽

Relative Standard

Abstract A procedure has been developed for determination of total arsenic and selenium in soils and plants by atomic absorption spectrometry with hydride generation associated with flow injection analysis (FIA-AAS-HG). Samples were wet-digested by using 2 systems: heating in a metal digestion block with controlled temperature and time and heating in a microwave oven. Total arsenic and selenium were reduced with NaBH4 and concentrated HCI, respectively. In both digestion systems used for the 2 matrix types, detection limits below 1 μg/L were found for both elements for an injection volume of 160 μL, with relative standard deviations of 3–6%. Recoveries by the method ranged from 93 to 105%; with the reference materials FD8 and MRG-1, the values obtained in all cases were consistent with the certified data. The FIA-AAS-HG procedure is highly suitable for determination of total arsenic and selenium in soils and plants, and because of the coupled system used, it is an improvement over other procedures in terms of sample treatment, sample consumption, and automation.

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Preconcentration and Determination of Tellurium in Garlic Samples by Hydride Generation Atomic Absorption Spectrometry

Journal of AOAC International ◽

10.1093/jaoac/88.4.1242 ◽

2005 ◽

Vol 88 (4) ◽

pp. 1242-1246 ◽

Cited By ~ 7

Author(s):

Marcos M Kaplan ◽

Soledad Cerutti ◽

José A Salonia ◽

José A Gásquez ◽

Luis D Martinez

Keyword(s):

Standard Deviation ◽

Atomic Absorption Spectrometry ◽

Atomic Absorption ◽

Hydride Generation ◽

Absorption Spectrometry ◽

Calibration Graph ◽

Lanthanum Hydroxide ◽

Relative Standard ◽

Hydroxide Precipitate

Abstract A procedure for the determination of traces of total tellurium (Te) in garlic (Allium sativa) is described that combines hydride generation atomic absorption spectrometry with preconcentration of the analyte by coprecipitation. The samples, each spiked with lanthanum nitrate (20 mg/L), are introduced into an Amberlite XAD-4 resin and mixed with ammonium buffer (pH 9.1). Te is preconcentrated by coprecipitation with the generated lanthanum hydroxide precipitate. The precipitate is quantitatively collected in the resin, eluted with hydrochloric acid, and then transferred into the atomizer device. Considering a sample consumption of 25 mL, an enrichment factor of 10 was obtained. The detection limit (3σ) was 0.03 μg/L, and the precision (relative standard deviation) was 3.5% (n = 10) at the 10 μg/L level. The calibration graph using the preconcentration system for Te was linear with a correlation coefficient of 0.9993. Satisfactory results were obtained for the analysis of Te in garlic samples.

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Determination of Total Selenium in Pharmaceutical and Herbal Supplements by Hydride Generation and Graphite Furnace Atomic Absorption Spectrometry

Journal of AOAC International ◽

10.5740/jaoacint.12-413 ◽

2014 ◽

Vol 97 (6) ◽

pp. 1696-1700 ◽

Cited By ~ 2

Author(s):

Tasneem G Kazi ◽

Nida F Kolachi ◽

Hassan I Afridi ◽

Kapil Dev Brahman ◽

Faheem Shah

Keyword(s):

Atomic Absorption Spectrometry ◽

Atomic Absorption ◽

Graphite Furnace ◽

Hydride Generation ◽

Standard Addition ◽

Absorption Spectrometry ◽

Herbal Supplements ◽

Graphite Furnace Atomic Absorption ◽

Total Selenium

Abstract The total selenium (Se) was determined in herbal and pharmaceutical supplements used for liver diseases. The total Se contents were determined in different pharmaceutical and herbal supplements by hydride generation atomic absorption spectrometry (HGAAS) and graphite furnace atomic absorption spectrometry (GFAAS) after microwave-assisted acid digestion. The accuracy of the techniques was evaluated by using certified reference material and the standard addition method. The recoveries of total Se were 99.4 and 99.0% for HGAAS and GFAAS, respectively. The precision of the techniques expressed as RSD were 2.34 and 4.54% for HGAAS and GFAAS measurements, respectively. The LOD values for HGAAS and GFAAS were 0.025 and 0.052 μg/g, respectively. The concentrations of Se in pharmaceutical and herbal supplements were found in the range of 19.2–53.8 and 25.0–42.5 μg/g, respectively, corresponding to 35–76% and 45–76% of the total recommended dose of Se for adults.

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Determination of arsenic in Helianthus annuus l. by hydride generation atomic absorption spectrometry

Global NEST Journal ◽

10.30955/gnj.001426 ◽

2015 ◽

Vol 17 (1) ◽

pp. 140-147

Keyword(s):

Atomic Absorption Spectrometry ◽

Atomic Absorption ◽

Helianthus Annuus ◽

Certified Reference Materials ◽

Hydride Generation ◽

Absorption Spectrometry ◽

Sunflower Plant ◽

Relative Standard ◽

New Research

This study represents new research on the sunflower (Helianthus annuus L.) including new data on arsenic contents in Ergene River Basin. In this study, the concentrations of arsenic in soil and sunflower plant have been investigated. The area has suffered significant pollution as a result of industrial and agricultural activities in Turkey. Sunflower are produced in this area that approximately %70 in Turkey. Arsenic concentrations in H.annuus L. plants collected from different regions in Turkey were determined by hydride-generation atomic absorption spectrometry (HGAAS) after microwave-assisted acid digestion of samples. The accuracy of the techniques was evaluated by using certified reference materials; NIM-GBW07404 (GSS-4) for soil and WEPAL-IPE-168 for sunflower plant. The precision of the technique, expressed as relative standard deviation, was less than 8% for HGAAS. Concentrations of total arsenic in root, seed, and soil collected from different regions were in the range of 0.01–2.82 mg kg−1 for H. annuus L. growing in Turkey in 2010 and 2011.

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