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. 2017 Oct 26;29:52. doi: 10.1186/s40557-017-0208-6

Table 5.

Calculation of the cumulative exposure index and time-weighted average concentration of CS2

• cumulative exposure index (CEI) = Σ (working years x reference concentration x weight)
• time weighted average CS2 concentration = Σ (the hours in the workday x reference concentration x weight) / the hours in the workday of exposure to CS2