Figure 1. Chlorine process-product flows for Western Europe 1992 (kMT Chlorine content). The
figure (left to right) indicates the processes and quantities involved in chlorine chemical production.
The figure demonstrates that even large and complex materials flow streams such as those for
chlorine can be successfully tracked and accounted for, thus indicating where system losses occur.
Rectangles refer top chemical processes for conversion and circles refer to products. Source: Ayres,
R.U. and Ayres, L.W., The Life-Cycle of Chlorine: Part I-IV, Journal of Industrial Ecology, in press.