Determination of 16 Selected Trace Elements in Children Plasma from China Economical Developed Rural Areas Using High Resolution Magnetic Sector Inductively Coupled Mass Spectrometry

Table 4

Concentrations (μg/L) of 16 selected plasma trace elements in boys (𝑁=232) by age groups.

Element	GM	95% CI GM	3–6 years; (𝑛=71)		7–12 years; (𝑛=137)
			GM	95% CI GM	GM	95% CI GM
B	33.4	31.30–35.99	35.51	31.70–40.53	32.31	29.56–35.55
Rb	395.89	368.26–425.68	362.34	324.79–400.17	415.14	375.44–462.18
Sr	54.46	51.98–57.16	54.01	50.31–57.91	54.71	51.45–58.31
Mo	2.40	2.31–2.50	2.48	2.33–2.63	2.36	2.25–2.48
Cd^ab	64.53	59.46–70.70	58.88	52.19–70.46	67.67	60.71–73.95
Pb^a	596.42	548.41–657.44	641.92	541.96–770.01	573.36	518.40–640.28
Al^b	1.34	1.05–1.71	1.62	1.06–2.67	1.12	0.90–1.61
V^a	112.51	103.75–122.17	132.53	117.09–152.93	103.05	92.87–113.43
Cr^a	576.33	495.71–680.52	748.1	563.83–1047.27	501.07	419.89–602.85
Mn	1.72	1.56–1.88	1.89	1.63–2.22	1.63	1.45–1.83
Fe	1274.32	1191.60–1372.53	1371.04	1224.06–1546.84	1225.29	1131.34–1345.05
Co^a	180.72	165.17–197.94	194.61	175.05–217.05	173.68	154.22–195.23
Cu	987.4	958.50–1016.89	1072.5	1029.30–1120.49	944.57	911.40–978.38
Zn	760.51	743.07–778.79	773.31	743.78–802.74	753.73	731.43–777.40
As	1.54	1.34–1.79	1.42	1.17–1.77	1.61	1.33–1.97
Se	118	113.91–122.26	117.15	110.06–125.08	118.45	113.50–123.57

ang/L, bmedian and CI median.