以各因子负荷为自变量，归一化的 PAHs(和左 旋葡聚糖)总含量为因变

In each of the load factor as independent variables, normalized of PAHs (and levoglucosan) a total content of the dependent variable, multiple linear regression analysis, the resultant regression equation y = - 0.604x1 - 0.396x2 + 0.358x3, correlation coefficient R 2 = 0.98, the motor vehicle exhaust, the contribution rate of combustion of coal and biomass combustion source were 44.48%, 29.16% and 26.36%.

Taking each factor load as the independent variable, the total content of normalized PAHs (and left-spin glucan) is the dependent variable, the multi-linear regression analysis is carried out, and the return is derived from the process y-0.604x1 - 0.396x2-0.358x3, the correlation coefficient R 2-0.98, then the motor vehicle exhaust, coal burning and burning material sorghum The contribution rates were 44.48%, 29.16% and 26.36% respectively .

With the factor load as independent variable and the normalized total PAHs (and l-glucan) content as dependent variable, the regression equation y = -0.604x1-0.396x2 + 0.358x3 was obtained, and the correlation coefficient R 2 = 0.98, the contribution rates of vehicle exhaust, coal combustion and biomass combustion sources were 44.48%, 29.16% and 26.36%, respectively