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Pre-concentration efficiency of chelex-100 resin for heavy metals in seawater : Part 2. Distribution of Heavy Metals on a Chelex-100 Column and Optimization of the Column Efficiency by a Plate Simulation Method

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Fig.  1. The  sectional  Chelex-100  column  string:  (1)  500-ml  sample  reservoir;  (2)  plastic  clamp;
Fig.  3. Recovery  of  Cd, Mn,  Ni,  and  Pb  from  seawater  at  various  pH  values  on  Chelex-100  columns  with  different  resin  weights  at  various  flow  rates;  10  pg  of  each  metal  was  added  to  500  ml  of  seawater

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