Dry weight of a solid material pertains to which analytical parameters?

Dry weight of a solid material pertains to which analytical parameters?

• A. Turbidity
• B. SSC (Suspended Solids Concentration)
• C. pH
• D. COD

Answer: (B)

The dry weight of a solid material is a direct gravimetric measure of the amount of solids present, which corresponds to the suspended solids in the sample. In practice, a known volume of water is filtered to collect the solids, the filter with captured solids is dried to constant weight, and the mass is reported as suspended solids concentration (mg/L). This provides an actual mass basis for the solids, unlike turbidity, which only indicates cloudiness and can be affected by particle size and color, or pH, which measures acidity, or COD, which assesses the oxygen demand of oxidizable substances. So, the dry weight relates specifically to the amount of suspended solids.

The dry weight of a solid material is a direct gravimetric measure of the amount of solids present, which corresponds to the suspended solids in the sample. In practice, a known volume of water is filtered to collect the solids, the filter with captured solids is dried to constant weight, and the mass is reported as suspended solids concentration (mg/L). This provides an actual mass basis for the solids, unlike turbidity, which only indicates cloudiness and can be affected by particle size and color, or pH, which measures acidity, or COD, which assesses the oxygen demand of oxidizable substances. So, the dry weight relates specifically to the amount of suspended solids.