They are also more centrally concentrated, since the concentration parameter increases with decreasing halo mass (Navarro et al. 1997).
Assaying ores and concentrates for platinum-group metals is extremely difficult, since the concentration of any particular metal may be less than one part per million.
Since the concentration of fluoride varied in groundwater, the criterion for initial concentration was set as 'in range'.
Large volumes must be processed, since the concentration of cells is very low at around 0.5 2.5 g l−1.
Since the concentration of H+ decreases at pH >3.0, the chemical reactions of (2) and (3) will not proceed.
Since the concentration of the working solution in the VMETS cycle varies continuously, the working process of the VMETS system is dynamic.
Since the concentration of NaBH4 much exceeded than that of 4-NA (100-fold), the kinetic reduction was considered to be pseudo-first order.
Since the concentration time of the studied sub-basins is less than 6 h, the storm continuity was considered as 6 h.
The difference is considered to be negligible since the concentration ratios were all within 2% of each other as seen in the bottom plot of Fig. 1.
Since the concentration of adsorbent was fixed as 0.02 g, the number of active adsorption sites remained constant and they finally became saturated with dichromate ions.
Since the concentration of chromium, mainly Cr VI), is very low in many natural waters, a highly sensitive method is required for its speciation (Arancibia et al. 2012).
