摘要
研究了用石墨炉原子吸收光谱法测定动物胶中痕量砷的方法和测定条件.测定的优化条件是:以4%的硝酸溶液为介质,用20μɡ硝酸镍作基体改进剂,最佳灰化温度1 000℃,最佳原子化温度2 200℃.该方法的检出限为1.0×10-12g,相对标准偏差为5.7%,回收率为97%,检出限低,准确性和重复性好,是测定动物胶中痕量砷的良好的方法.
The method and conditions of determining trace arsenic in glue with graphite furnace atomic absorption spectrometry were explored. The best determination conditions. The medium is 4% nitric acid solution. 20μg nickelous nitrate is used as basal body modifier. The best cinefaction temperature is 1 000℃. The best atomization temperature is 2 200℃. Detection limit is 1. 0 × 10^-12 g. Relative standard deviation is 5.7%. Percent recovery is 97%. The method had little detection limit and good accuracy, repeatability. It is a good way of determining trace arsenic in glue.
出处
《武汉工程大学学报》
CAS
2008年第2期35-37,共3页
Journal of Wuhan Institute of Technology
关键词
动物胶中痕量的砷
石墨炉原子吸收光谱法
测定条件
arsenic in glue
graphite furnace atomic absorption spectrometry
determination conditions
