Distribution of stations by thresholds of 99.79 percentile of the hourly NO2 concentrations for the year 2011. The chart is based on the 99.79 percentile of the NO2 hourly concentrations, corresponding to the 19th highest NO2 concentration when data availability is 100% over the year.
It is largely biodegradable, less polluting to aquatic habitats and just as effective a cleaning agent as less environmentally friendly options. Look for eco-friendly dishwashing detergents, such as those labelled with the European flower eco-label (see www.eco-label.com to find one in your country).
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