Sentence examples for primary pollution from inspiring English sources

Plotting a PCA projection of our data (Fig.  1a) in combination with the component loading weights reveals a primary mode of variation (PC1) dominated by CO, NO2, NO X, EC, and OC, a subset of pollutants indicative of primary pollution, and a primary mode of variation (PC2) weighted towards SO4, NH4, and O3, marking it as a measure of secondary pollution.

The onset of the primary pollution (the base of the polluted strata) is hence clearly identified in the distal floodplain sediments as persistent and a potentially isochronous pollution signal in the fluvial record, whereas a secondary pollution signal overwrites the expected "primary pollution climax" and "pollution improvement" signals.

A considerable part of the primary pollution is present in hotspots in the floodplain 10 15 km downstream from the mining district.

Atmospheric environmental deterioration has become a significant obstacle to sustainable development, with coal-fired power plants being one of the primary pollution sources.

The leachate percolates through the soil and where there is no proper leachate filtration, this discharge could be potentially a primary pollution source of soil and water resources.

In the upper right, types represent rather infrequent days dominated by higher primary pollution.

NO2 has been shown to be a reliable indicator for traffic-related primary air pollution (Hochadel et al. 2006; Nieuwenhuijsen 2000).

However, because our primary air pollution comparisons are temporal, not spatial, variation in health care utilization or diagnostic practices (Howel et al. 2001) is less likely to be associated with pollution and hence would not result in confounding.

Policies that provide affordable housing in walkable areas with cleaner air can help to offset the trend of low-income households experiencing worse than average primary air pollution; access to employment and other opportunities is an important aspect of overcoming disadvantages faced by traditionally underserved groups.

With the study area, urban and agriculture are mainly concentrated in the downstream area and were the primary non-point pollution sources in this region.

Storm water has become a primary source of pollution around the country, especially in urban areas, as the Clean Water Act — passed by Congress four decades ago — has forced the cleanup of wastewater and runoff from industrial facilities.