Concordance for noun purification

The page lists top contexts for noun purification and their percentages (as applied to automotive subject domain).

Share	Phrase
12.52%	purification ability
12.51%	purification factor
10.39%	purification device
7.42%	purification rate
6.29%	purification efficiency
5.69%	gas purification
4.56%	purification converter
4.48%	exhaust [physical/chemical] purification
3.68%	purification percentage
2.86%	purification performance
2.33%	purification subsystem
2.07%	purification treatment
2.02%	purification apparatus
1.86%	purification technique
1.64%	purification system
1.46%	improve purification [perform operation]
1.30%	purification element
1.30%	purification temperature
1.26%	purification capacity
0.82%	purification characteristic
0.81%	purification method
0.74%	purification ratio
0.72%	purification capability
0.66%	hc purification
0.64%	optional [importance] purification
0.63%	unnecessary [importance] purification
0.63%	purification means
0.62%	purification catalyst
0.55%	hydrocarbon purification
0.54%	achieve purification [perform operation]
0.52%	purification process
0.51%	air purification
0.50%	exhaust [physical/chemical] purification
0.45%	purification operation
0.43%	effective [effectiveness] purification
0.42%	catalytic [physical/chemical] purification
0.40%	ensure purification [perform operation]
0.39%	component purification
0.38%	purification curve
0.36%	assure purification [perform operation]
0.36%	improved [effectiveness] purification
0.35%	enhance purification [perform operation]
0.32%	purification effect
0.30%	obtain purification [perform operation]
0.21%	purification point
0.19%	control purification [perform operation]
0.18%	oil purification
0.16%	purification condition
0.16%	fuel purification
0.14%	provide purification [perform operation]