超声促水溶-石墨炉原子吸收光谱法测定胶囊壳中铬的含量

基金项目: 贵州省科技计划资助项目[No.SY(2010)3003]

Determination of chromium in capsule shells by ultrasonic wave promoting dissolution-graphite furnace atomic absorption spectrometry

摘要: 建立超声促水溶-石墨炉原子吸收直接进样测定胶囊壳中铬含量的方法。对原子吸收光谱法测定铬含量的各参数条件进行优化，得到最佳条件为：200 ℃和500 ℃消化，1 100 ℃灰化，2 150 ℃原子化，方法检出限为0.05 ng/mL，样品加标回收率为93.3％~106.0%。与传统方法比较，本方法快速、准确。
- 胶囊壳 /
- 铬 /
- 石墨炉原子吸收光谱 /
- 含量测定
Abstract: A modified method was established for the determination of chromium in capsule shells by ultrasonic wave digestion-graphite furnace atomic absorption spectrometry.After the atomic absorption spectrometry method for determination of chromium parameters optimization,the best test condition is digestion in 200 °C and 500 °C，pyrolysis in 1 100 °C，and atomize in 2 150 °C.Under the optimum testing conditions,the detection limit of chromium is 0.05ng/mL and sample recovery rate of 93％-106％.The modified method was quick and accurate compared with traditional methods.
- capsule shell /
- chromium /
- graphite furnace atomic absorption spectrometry /
- determination