Conceptid (2) | Preflabel |
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NACNAAP2 | Concentration of sodium {Na CAS 7440-23-5} per unit dry weight of suspended particulate material >0.4/0.45um by filtration and atomic absorption spectroscopy |
NACNICP2 | Concentration of sodium {Na CAS 7440-23-5} per unit dry weight of suspended particulate material >0.4/0.45um by acid digestion of filter residue and inductively-coupled plasma atomic emission spectroscopy |