首页> 美国政府科技报告 >Interim Report on the Genetic and Animal Toxicity Testing of SRC-I Products, Intermediates, and Waste Materials. Appendix C. Chemical Evaluation of SRC Samples for Genetic Toxicity Testing - Basic Program Reports
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Interim Report on the Genetic and Animal Toxicity Testing of SRC-I Products, Intermediates, and Waste Materials. Appendix C. Chemical Evaluation of SRC Samples for Genetic Toxicity Testing - Basic Program Reports

机译:sRC-I产品,中间体和废料的遗传和动物毒性测试中期报告。附录C.用于遗传毒性测试的sRC样品的化学评估 - 基本程序报告

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This Appendix presents the reports submitted by SRI regarding the chemical analyses of 32 samples done in support of the genetic toxicity testing. This chemical characterization provided an analytical signature for comparison, to demonstrate that there had been no gross changes in the nature of the chemicals stored by SRI during their investigations. Both ICRC and SRI considered it important to demonstrate the general stability of the samples during the testing period. The observed absence of gross changes, combined with the specified handling and storage procedures, implies (although it does not absolutely prove) that changes in the biological activity of the samples tested were minimal. ICRC feels that any minor chemical changes would cause only quantitative differences in the results of the genetic toxicity testing (e.g., a change in the number of revertants per plate of a particular sample in the Ames test). Qualitative assessments would be very unlikely to change. For example, a substance giving a positive response in the Ames test would be classed as a mutagen, even if the number of revertants per microgram of material changed somewhat due to chemical changes during storage. Furthermore, changes that might occur during sample handling for this program would be of the same nature as those that might occur during handling and storage at the demonstration plant. (ERA citation 09:030127)

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