Fig. 3
From: Long-range transport of mutagens and other air pollutants from mainland East Asia to western Japan
Mutagenicities of TSP collected at Yurihama. Mutagenicity was examined using Salmonella typhimurium YG1024 with and without S9 mix. a and b show mutagenicities of TSP without and with S9 mix, respectively. The intervals for collecting TSP were as follows: summer (June–August), autumn (September–November), winter (December–February), and spring (March–May). Arrows show dates of Asian dust events registered by the JMA (March 8, 9, 19, and 20) or indicated by LIDAR (March 7, 8, 9, and 19, April 30, and May 30). Horizontal lines show the 90th percentile of mutagenicity of organic extracts of TSP in YG1024 without S9 mix (29.9 revertants (rev.)/m3) and with S9 mix (32.3 rev./m3)