大気浮遊粒子,河川水および土砂の変異原性モニタリング

概要

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The mutagenicity of airborne particles (n=100) , river waters (n=105) and surface soils (n=111) which were collected from five geographically different areas of Japan, i.e. the Hokkaido, Kanto, Chubu, Kinki and Kyushu areas, between October 1996 and March 1997, were examined by the pre-incubation method using Salmonella typhimurium strains. All organic extracts of airborne particles, which were collected by high volume air samplers, were mutagenic toward TA98 and TA100 strains both in the presence and absence of S9 mix. The extracts with the greatest mutagenicity were from samples collected at sites in heavy traffic areas. Most of the blue rayon-absorbed materials from river waters exerted strong mutagenicity toward YG1024 strain with S9 mix, and the potencies varied widely with sampling site. No blue rayon-absorbed materials showed strong mutagenicity in TA100 strain, regardless of whether S9 mix was added. Nonagricultural surface soils were collected from roadsides, parks and so forth in each area. All organic extracts of surface soils except for those from the Kinki area were mutagenic toward both TA98 and TA100 strains with and without S9 mix. The mutagenic activities of surface soil extracts ranged widely, and the effect of additional S9 mix on the activities depend on samples.
2000-07-31