“…As shown in Figure C, comparable carbon congener profiles of MCCPs were observed in all samples, even though the relative abundance of congener groups varied between the different sample groups, and these were dominated by C 14 , followed by C 15 , C 16 , and C 17 . This congener group distribution pattern was in line with those observed in various biota samples worldwide such as in edible insects, mature maize plants, marine and terrestrial animal samples, human milk, and free-range chicken eggs. , This may be ascribed to the identical composition of MCCPs congener groups in the technical CP mixture used globally. In terms of the chlorine substitution, the MCCPs congener group profiles in three types of egg samples showed a similar pattern, which were different from those in soils collected from Shergyla Mountains in the Tibetan Plateau (Figure D).…”