| 1.5 | additive matrix effect | ||
| Matrix effect that is independent of the quantity value of the measurand. | |||
| Note 1: | An additive matrix effect affects the intercept, not the slope of a linear calibration curve. | ||
| Note 2: | The effect is sometimes termed “translational matrix effect” or “background interference”.9 | ||
| Example 1: | An additive matrix effect that originates from a missing or flawed blank correction.10 | ||
| Example 2: | The measurement of plutonium mass concentration using a K-edge densitometer in the presence of a uranium admixture. The presence of uranium causes a large additive matrix effect.11 | ||
| 1.5 | additive matrix effect | ||
| Matrix effect that is independent of the quantity value of the measurand. | |||
| Note 1: | An additive matrix effect affects the intercept, not the slope of a linear calibration curve. | ||
| Note 2: | The effect is sometimes termed “translational matrix effect” or “background interference”.9 | ||
| Example 1: | An additive matrix effect that originates from a missing or flawed blank correction.10 | ||
| Example 2: | The measurement of plutonium mass concentration using a K-edge densitometer in the presence of a uranium admixture. The presence of uranium causes a large additive matrix effect.11 | ||