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Environmental Sciences Europe

Table 1 Numerical comparison of MAFfactor and MAFceiling for a mixture for which safe use is demonstrated for all components

From: The mixture assessment or allocation factor: conceptual background, estimation algorithms and a case study example

 

Initial mixture

Application of MAFfactor = 1.56

Application of MAFceiling = 3.57

RQ Substance 1

0.8

0.51

0.28

RQ Substance 2

0.3

0.19

0.28

RQ Substance 3

0.3

0.19

0.28

RQ Substance 4

0.1

0.06

0.1

RQ Substances 5–10

0.01

0.006

0.01

Sum (RQ)

1.56

1

1

  1. Safe use is demonstrated for each individual component of the initial mixture (all RQ values ≤ 1). However, the RQ sum exceeds the critical value of 1. Aim of applying both MAF classes is to reduce the RQ sum from the initial value of 1.56 to a value of 1. The initial mixture used in this example is arbitrary, but follows the typical Pareto-like distribution of RQ values found in relevant mixtures. Values given in italics: RQ values that are lowered (by different amounts) by the application of the MAF
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