Abstract:The method for the determination of copper and chromium in the cartridges of permanent pen oil base and ink by ICP-AES was reported. This mainly concerned the different methods for pretreatment of samples. The study indicated that the better method for the pretreatment of the cartridges of permanent pen and the ink containing resin is dry ashing at 550 ℃ followed by wet-decomposition with mixed acid (VHNO3∶VHClO4=3∶1); the better method for the pretreatment of water soluble ink is hydrodigestion with mixed acid (VHNO3∶VHClO4=3∶1 ). After suitable dilution with acid, copper and chromium were determinated by ICP-AES. It was shown that the method is reliable for the test of precision and accuracy. RSD and recovery were in the range of 5.9%-7.9% and 90%-104%, respectively.
Key words:Permanent pen;Ink;Cu;Cr;Pretreatment of sample;ICP-AES
段旭川. 电感耦合等离子体发射光谱法测定记号笔笔芯和墨水中铜和铬[J]. 光谱学与光谱分析, 2006, 26(07): 1342-1344.
DUAN Xu-chuan. Determination of Copper and Chromium in the Cartridges of Permanent Marker Pen and Ink by ICP-AES. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2006, 26(07): 1342-1344.