Al3+ detection: Mononucleotide-modified metal nanoparticles (mnMNPs) can be used as a colorimetric probe for selective and sensitive detection of Al3+ (see figure). The aggregation of mnMNPs is selectively and sensitively induced by Al3+; this allowed the rapid colorimetric analysis of Al3+ without any prior sample preparation and specific instruments. This method can also be used for monitoring Al3+ changes on the living cellular surfaces under physiological conditions.
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Zhang et al. (2012) studied this question.
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