Determination of Ni(II) in water using nanometer attapulgite adsorption via FAAS

nanometer attapulgite is a fine adsorptive reagent to Ni(II) in specific pH,adsorbent dosage, surging and depositing time, hydrochloric acid concentration, elution volume, surging and depositing time for the recovery and static adsorptive capability. The experimental results show that Zn(II), Co(II), K+, Cu(II), Na+, Mn(II), Pb(II), Hg(II), SiO32-, WO42-, MoO42-, HPO42-, VO3- didn't interfere the adsorption to Ni( II). the linear range is 0.10 similar to 1.5ug/mL, the regression equation is A=0.0476C+0.0084 r=0.9996 the detection limit is 0.190 mu g/mL for Ni(II),recovery is 86.7.5%-102.5%. This method can be used to the determination of Ni(II) in environmental water.