Preconcentration of trace amounts of Ni(II) in waste water samples Islamshahr using modified Multiwall nano tube carbon

A sensitive and selective method for exteraction of trace amounts of Ni(II) in water samples based on the adsorption of Multi Wall Carbon NanoTube carboxyl. A new  methods technique using a disperse solid phase extraction (DSPE) with Multi Wall Carbon NanoTube carboxyl as sorbent was developed for the preconcentration of trace amounts of Ni(II) inVaramin waste water  samples and was determined by flame atomic absorption spectrometry (FAAS). Some of the important parameters on the preconcentration and complex formation were selected and optimized. Under the optimized conditions the limit of detection (LOD) and relative standard deviation were 0.090µg.L-1,0.562 µg.L-1 and 1.99% respectively. The enrichment factor was 30 and the percentage of recovery was in the range of 95-100% .The method was successfully applied to the recovery of Ni2+in different type of water samples. of Multi Wall Carbon NanoTube carboxyl in this study is full of potential to use as an excellent adsorbent in the extraction method like solid phase extraction(SPE) and solid phase micro extraction(SPME).