Persistent Organic Pollutants in Human Milk from Central Italy: Levels and Time Trends

Table 2

Mean (S.D.) and median concentrations (ng/g l.w.) of HCB, p,p′-DDE and PCB in Italian breast milk samples divided into age classes and according to number of births.

ng/g l.w.		Maternal age (years)				Births
		20–25	25–30	30–35	35–40	Primiparae	Multiparae
		n = 7	n = 17	n = 19	n = 7	n = 37	n = 13
HCB	Mean	36.10 (38.52)	38.54 (44.31)	21.97 (21.20)	70.63 (98.29)	40.62 (51.52)	24.37 (20.37)
	Median	22.17	14.79	14.37	32.78	17.82	18.12
p,p′-DDE	Mean	870.80 (815.28)	717.08 (402.17)	1107.74 (676.15)	1548.45 (1448.78)	957.77 (774.08)	1149.69 (836.40)
	Median	468.87	639.29	1098.49	1341.02	853.02	1341.02
∑PCB	Mean	535.13 (239.88)	490.84 (316.96)	573.16 (374.78)	573.46 (418.84)	582.46 (299.04)	541.66 (308.63)
	Median	628.37	416.30	585.37	591.30	601.76	585.37