【摘 要】
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A new method for the determination of trace calcium by solid substrate-room temperature phosphorimetry is established. It is based on the fact that chromeazurol
【出 处】
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Chinese Chemical Letters
论文部分内容阅读
A new method for the determination of trace calcium by solid substrate-room temperature phosphorimetry is established. It is based on the fact that chromeazurols azurol S-phenanthroline-NaCMC (CAS-phen-NaCMC) system can emit strong and stable room temperature phosphorescence (RTF) on the solid substrate in the filter paper. Ca2+ and phenanthroline can form complex ion Ca(phen)32+, which will form complex [Ca(phen)3(CAS)2] with CAS. In the result, the number of CAS molecules in each spot increased, causing sharp increase of the RTP signal of the CAS-phen-NaCMC system.
A new method for the determination of trace calcium by solid substrate-room temperature phosphorimetry is established. It is based on the fact that chromeazurols azurol S-phenanthroline-NaCMC (CAS-phen-NaCMC) system emit emit strong and stable room temperature phosphorescence ( RTF) on the solid substrate in the filter paper. Ca2 + and phenanthroline can form complex ion Ca (phen) 32+, which will form complex [Ca (phen) 3 (CAS) 2] with CAS. CAS molecules in each spot increased, causing sharp increase of the RTP signal of the CAS-phen-NaCMC system.
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