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The slurry technique was applied for determination of cobalt in sewage sludge by electrothermal atomic absorption spectrometry. The graphite furnace temperature programme was optimized. The diluent was 5 % HNO3 Standard atomization condition for cobalt determination were used and no matrix modifier was applied. The slurries were homogenised by ultrasonic disintegration for 20 s at power of 50 W. Finally...
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