Abstract
The traditional deoxygenation techniques in cyclodextrin induced room temperature phosphorescence (CD-RTP) include N 2(g) purging and Na 2SO 3 chemical deoxygenation. In this paper, we propose two new deoxygenation methods in which oxygen is eliminated by hydrogen gas and carbon dioxide produced by the reactions Zn(s)/HCl and Na 2CO 3/HCl in the measuring media. With 1-bromocyclohexane (BCH) as an external heavy atom perturber and phenanthrene as a model compound compared with traditional deoxygenation techniques, the two new methods: (1) are facile and do not need any complicated supplementary equipment; (2) are rapid, deoxygenation time needed is only 1–2 min; (3) have a wider acidic condition, which is a supplement of chemical deoxygenation by Na 2SO 3; (4) can maintain RTP signal without decay for 10 min; (5) have good analytical characteristics.
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