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Cadmium analysis by Graphite Furnace Atomic Absorption Spectroscopy
Cadmium analysis by Graphite Furnace Atomic Absorption Spectroscopy
Weighed test portions of ground rice grain or rice plant samples are placed in a 50-ml screw-capped tube and added with concentrated HNO3 and H2O2. Samples are pre-digested overnight at ambient temperature (22 ºC -- 26 ºC). Samples are then placed in a temperature-controlled block digestor for 30 minutes at 80 ºC, and then 2 hours at 125 ºC. After cooling, samples are diluted with deionized water and agitated in a shaker at 180 rpm for 5 minutes. Samples are left to settle for 1 hour before being analyzed using GFAAS.
Note: To determine Cd, the sample weight required is at least 3 g of plant sample.
References:
Baker DE, Amacher MC. 1982. Nickel, copper, zinc, and cadmium. In: Page AL, editor. Methods of soil analysis: part 2. Chemical and microbiological properties. 2nd edition. Agronomy Monograph No. 9. ASA-SSSA, Madison, WI, USA.
Perkin-Elmer. 1994. Analytical methods for atomic absorption spectroscopy. The Perkin-Elmer Corporation, USA.
Perkin-Elmer. 1996-1999. AA WinLab Software Guide. Perkin Elmer LLC. USA.
Perkin-Elmer. 2010. Application notes on analysis of arsenic, cadmium, and lead in Chinese spice mixtures using Graphite Furnace Atomic Absorption Spectrophotometry. Agronomy Monograph No. 9. ASA-SSSA, Madison, WI, USA.
Schlemmer G, Radziuk B. 1999. Analytical graphite furnace atomic absorption spectrometry: a laboratory guide. Birkhauser, Germany.
Wheal MS, Fowles, TO, Palmer LT. 2011. A cost-effective digestion method using closed polypropylene tubes for inductively coupled plasma optical emission spectrometry (ICP-OES) analysis of plant essential elements. Anal. Methods. 3:2854-2863.
Baker DE, Amacher MC. 1982. Nickel, copper, zinc, and cadmium. In: Page AL, editor. Methods of soil analysis: part 2. Chemical and microbiological properties. 2nd edition. Agronomy Monograph No. 9. ASA-SSSA, Madison, WI, USA.
Perkin-Elmer. 1994. Analytical methods for atomic absorption spectroscopy. The Perkin-Elmer Corporation, USA.
Perkin-Elmer. 1996-1999. AA WinLab Software Guide. Perkin Elmer LLC. USA.
Perkin-Elmer. 2010. Application notes on analysis of arsenic, cadmium, and lead in Chinese spice mixtures using Graphite Furnace Atomic Absorption Spectrophotometry. Agronomy Monograph No. 9. ASA-SSSA, Madison, WI, USA.
Schlemmer G, Radziuk B. 1999. Analytical graphite furnace atomic absorption spectrometry: a laboratory guide. Birkhauser, Germany.
Wheal MS, Fowles, TO, Palmer LT. 2011. A cost-effective digestion method using closed polypropylene tubes for inductively coupled plasma optical emission spectrometry (ICP-OES) analysis of plant essential elements. Anal. Methods. 3:2854-2863.
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