An ultrasonic assisted extraction as a green way approach is described for simple, efficient and rapid determination of trace metals in some complex matrices by atomic absorption spectrometry and/or other techniques. Their optimized conditions are certainly investigated in details, in particular several variables that could affect the performance of the method in comparison with those of standard methods. In this review, arsenic species are focused to determine in chilli as the plant matrix, for example. This will lead to improve mild extraction method as a routine work for heavy metals in such food analysis with its emerging applications and future trends.
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