To assess the exposure to and health risks from endocrine-disrupting chemicals (EDCs) in primary and secondary school students.
The participants of this study were 330 primary and secondary school students who were selected at random from visitors to the Sleep Research Center of Shenzhen People′s Hospital between July and September of 2022. The students provided bedtime and next-morning urine samples and completed questionnaire surveys. A triple quadrupole-linear ion trap mass spectrometer was utilized to assess the concentrations of 34 EDCs, encompassing 7 organophosphate flame retardants (OPFRs), 3 parabens (PBs), 10 phthalates (PAEs), 4 benzophenones, 7 synthetic phenolic antioxidants (SPAs), and 3 bisphenols, in both bedtime and morning urine samples to estimate the students' daily intake (EDI) of these EDCs.
Most EDCs were detected at rates exceeding 40% in both bedtime and morning urine samples from 330 participants ultimately included in the analysis. The highest detection rates were observed for monomethyl phthalate (MMP), mono[2-(carboxymethyl)hexyl] phthalate (MMCHP), and mono [2-ethyl-5-carboxypentyl] phthalate (MECPP). Di (2-ethylhexyl) phthalate (DEHP) had the highest EDI, with the mean EDI from morning samples exceeded the RfD. Seventy-two students (21.8%) had a phthalate HI greater than one.
The cumulative exposure to PAEs among primary and secondary school students in Shenzhen is relatively high, posing potential health risks. To mitigate these risks, it is advisable to minimize contact with products containing PAEs.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |