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. 2021 Apr 8;9(4):79. doi: 10.3390/toxics9040079

Figure 2.

Figure 2

Figure 2

Chronic mixture risk quotient (RQmix, chronic) for fish in water samples from small- and mid-size streams in Switzerland in 2012–2018. Two thousand and twelve and 2018: chronic ExpSc based on 14 day TP composite samples (except 16–27 April 2012: 11 day); in 2017 (Chrümlisbach, BE Pyrethroids) and 2018, RQmix is based solely on data for pyrethroids and chlorpyrifos/-methyl. Two thousand and fifteen and 2017: chronic ExpSc based on 14 day time-weighted average concentrations. Gaps indicate periods when no samples were taken; the dashed line indicates RQ = 1, and the dotted line indicates RQ = 0.1.