The phrase "apportionment for" is correct and usable in written English.
It is typically used to describe the allocation of some sort of benefit or responsibility. For example: "I will need an apportionment for the office supplies in order to cover next month's expenses."
The results of source apportionment for surficial heavy metals, both from PCA/APCS and CMB model, showed that the natural background (30%) was the most dominant contributor to the surficial heavy metals, followed by mining activities (29%).
We collected PM2.5 during two seasons and performed source apportionment for these samples using the chemical mass balance (CMB) receptor model (Zheng et al. 2002).
Methods: Source apportionment for PM ≤ 2.5 μm and ≤ 10 µm in aerodynamic diameter (PM2.5 and PM10) using positive matrix factorization identified eight different factors.
These findings suggest that the new data on PM2.5 components may not lead to satisfactory, definitive source apportionment for national studies.
Figures 1 and 2 present the means and distributions of the resulting PM2.5 mass source apportionment for each source category in Washington and Phoenix, respectively.
The genetic relationship indicated by structural and isotopic similarities between free and macromolecular aromatic units (Sephton et al., 1998) suggests that source apportionment for one fraction also applies to the other.
Mr. Snow said that while the ministers had shown themselves receptive to a role in aiding Iraq and in resolving its enormous debt problems, they had not raised the issue of the apportionment of contracts for reconstruction work.
The stable carbon isotope composition of chlorinated aliphatic compounds such as chlorinated methanes, ethanes and ethenes was examined as an intrinsic fingerprint for apportionment of sources.
Several proposals for apportionment of votes have been raised to address disparities in UN members' population and economic power.
Soon after the news of this public tragedy reached Athens, a massive controversy erupted over the apportionment of blame for the botched rescue.
Because the census (since at least 1980) has not distinguished citizens and permanent, legal residents from individuals here illegally, the basis for apportionment of House seats has been skewed.
