Table 4. Effect of handling surface area on estimated intake when concentrations in thermal paper are high.

	K = 1072	K = 1838	K = 21522
AF = 2.3%	10582.9 ± 223.3	18145 ± 382.8	212467 ± 4483
AF = 8.6%	39571 ± 834.9	67846 ± 1432	794441 ± 16762
AF = 27%	124234 ± 2621	213005 ± 4494	2494175 ± 52626

Estimated exposure calculated using Eq 1, a single handling event, maximum handling time of 240 seconds and thermal paper concentrations of 26.3 mg/g, the maximum reported by Hormann et al. [22]. Surface area was calculated using the values described in Fig 3B.