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XIE Feng, LI Zhan-bin, TAN Hong, WANG Yan-jiao. Determination of chromium in capsule shells by ultrasonic wave promoting dissolution-graphite furnace atomic absorption spectrometry[J]. Journal of China Pharmaceutical University, 2012, 43(3): 281-282.
Citation: XIE Feng, LI Zhan-bin, TAN Hong, WANG Yan-jiao. Determination of chromium in capsule shells by ultrasonic wave promoting dissolution-graphite furnace atomic absorption spectrometry[J]. Journal of China Pharmaceutical University, 2012, 43(3): 281-282.
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Determination of chromium in capsule shells by ultrasonic wave promoting dissolution-graphite furnace atomic absorption spectrometry

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  • 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.
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