Figure 2From: Consistency of arsenic speciation in global tobacco products with implications for health and regulationRegression analysis. Regressions analysis of extractable inorganic arsenic and DMA + MA against total arsenic in six reference materials, five legal cigarette brands from the US, UK and China, and three counterfeit samples. Regression lines are significant at p = 0.05, and slopes (m) are indicated (both pass through the origin within error).Back to article page