Table 3.

Dermal exposure^a to monomeric and polymeric HDI (ng cm⁻²) by the sampled body region and use of protective clothing

Sampled regionb	Contribution to total body surface areac (%)	No. measurementsd	HDI			Uretidone			Biuret			Isocyanurate
			No. non-detectse	GM	GSD	No. non-detectse	GM	GSD	No. non-detectse	GM	GSD	No. non-detectse	GM	GSD
Lower arms	6	820	634	0.03	30.9	721	0.10	65.1	780	0.08	37.8	117	27.7	12.0
Coveralls	6	488	447	0.01	27.3	477	0.03	50.0	478	0.03	26.3	104	8.76	7.95
No coveralls	6	332	187	0.11	14.8	244	0.51	20.1	302	0.29	25.1	13	150	8.11
Hands	5	428	374	0.01	25.3	418	0.04	53.2	399	0.10	23.7	95	14.9	14.7
Gloves	5	314	308	0.01	22.1	313	0.02	52.7	307	0.05	14.0	92	5.42	8.67
No gloves	5	114	66	0.10	10.5	105	0.18	17.4	92	0.66	23.0	3	240	6.86
Neck	2	304	257	0.01	27.3	299	0.04	32.5	294	0.05	38.6	56	13.1	8.07
Hood	2	86	77	0.01	17.5	86	0.02	34.9	84	0.03	12.1	25	6.11	8.98
No hood	2	218	180	0.02	20.5	213	0.05	16.2	210	0.05	41.7	31	17.6	7.82
Wrists	1	180	153	0.02	28.8	170	0.05	28.7	164	0.08	48.7	19	26.6	8.53
Face	2	36	31	0.01	21.2	35	0.05	17.5	34	0.06	11.7	5	16.0	6.99
Lower legs	14	8	2	0.16	4.65	6	0.35	6.29	6	0.81	9.62	0	281	2.77

^aMultiple imputation (n = 10 imputed data sets) was used to impute tape-strip sampling data below detection limits.

^bThe face and lower legs were sampled when protective clothing was not worn. An effort was made to sample the wrists when they were not adequately covered during spray painting by the gloves or coveralls. Thus, these sampled regions are not stratified by protective clothing.

^cBased on the Berkow chart (Deitch, 2008).

^dNumber of measurements. Summation of levels collected with three successive tape-strip samples corresponds to one measurement.

^eNumber of non-detectable values. Based on whether or not the first successive tape-strip collected detectable levels of the respective polyisocyanates.