大气污染物致突变研究中的Breakpoint回归

Breakpoint Regression in Research of Airborne Particulate Genotoxicity

本文在用Ames试验和SOS显色法两个细菌短期测试系统研究广州地区1991年的大气总悬浮颗粒（TSP）二氯化烷（DCM）提取物遗传毒性的基础上，建立了气温（T），气压（P），风速（W），降雨量（R），相对湿度（RH）5种主要气象因素与诱变力和诱导力之间的Breakpoint回归模型，回归效果显著。

Two bacterial genotoxicity tests.Ames test and SOS chromotest were used to study Dichlorotane (DCM) extracts of Total Surspendid Particulates(TSP)from Guangzhou in a whole year of 1991.Models of Breakpoint regression between five meteorological conditions(i.e.,temperature,pressure,wind speed,precipitation and relative humidity) were established.The regession was significant.