Application of acetylacetone chelation solid-phase extraction to GFAAS measurements of trace amounts of beryllium in livers and muscles of poultry and livestock

作者：Liu, Pei Yi; Chen, Meng Hsien; Tsai, Ya Yun; Kuo, Mao Sung^*

来源：Food Chemistry, 2011, 126(3): 1460-1464.

DOI：10.1016/j.foodchem.2010.11.156

• Liver
• Muscle
• Poultry
• Livestock
• Beryllium
• Acetylacetone
• GFAAS

Trace amounts (0.004-0.55 ng) of beryllium (Be) in a dried bovine liver sample (20 mg) can be accurately determined by graphite-furnace atomic absorption spectrophotometry (GFAAS) after treating with microwave digestion (HNO3/H2O2) at 85 degrees C for 10 min and using acetylacetone as a chelating agent in the presence of an acetate buffer (pH 6.0). The method detection limit (MDL, 3 sigma) for Be was found to be 0.18 ng g(-1) and the limit of quantification (LOQ 10 sigma) was found to be 0.60 ng g(-1); the calibration graph was linear up to 27 ng g(-1). The Be contents measured in four liver and four muscle samples (BCR CRM-185R bovine liver, BCR CRM-384 pork muscle, and six samples collected in Kaohsiung, Taiwan, ROC) were between 2.3 and 4.7 ng g(-1). Good spiked recoveries (96.0-103.0%) were obtained for these eight samples with a relative standard deviation (RSD, n = 3) <= 3.0%. The method could be applied to measurements of Be in livers and muscles of poultry and livestock.

• 出版日期2011-6-1
• 单位中山大学