Li L, et al. - An examination was conducted of the association between secondhand smoke (SHS) exposure and heavy metal concentrations in children. The findings revealed that the contents of heavy metals in their hair, including chromium, manganese, nickel, arsenic, lead, and cadmium were identified via inductively coupled plasma-mass spectrometry. Additionally, the secondhand smoking (SHS) exposure was investigated through face-to-face analysis of their parents. Children exposed to SHS demonstrated an increased lead and cadmium accumulations in the body.