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Experimental study reveals selective lead binding by cryptand reagents over competing cations, suggesting utility for chemical sensors.
The cryptands 3 and 5 are both selective reagents for lead, they also respond to other doubly charged cations including Ca2+, Sr2+ Hg2+ and Cd2+ but with significantly lower sensitivity; they show no significant response to Zn2+, Cu2+ and Ba2+.
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Mason et al. (1994) studied this question.
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