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A rapid and simple method was established based on gold nanoparticle‐labelled monoclonal antibody probes for the detection of melamine pollution in raw milk. The conditions for conjugation between the antibody and gold nanoparticles were optimised (pH 8.0, antibody concentration 5 μg mL−1). It gives a single proportional to melamine concentration with a performance time of only 3 min. A practical...
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