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The slurry technique was applied to the determination of Ni, Cr and Co in wheat flour by electrothermal atomic absorption spectrometry (ETAAS). The influence of the graphite furnace temperature programme was optimized. Optimum sensitivity was obtained by using a mixture of 15% HNO 3 –10% H 2 O 2 as suspended medium for a 3% w/v slurry in the determination of Ni; lower concentrations...
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