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 2

Trueness (or recovery) and precision of the certified reference materials and the fortified pooled plasma analysis.

Element	Reference; materials	Concentrations (µg/L)		RSD (%)		Trueness/recovery (%)
		Certified/spiked	Measured	Intraday; (𝑛=10)	Interday; (𝑛=10)
Mo	Recipe level 1	1.82±0.09	1.92±0.12	3.2	8.8	105.49
Cd	Recipe level 1	2.37±0.12	2.25±0.10	4.1	9.3	94.73
V	Recipe level 1	1.45±0.7	1.61±0.03	4.7	10.9	111.22
Cr	Recipe level 1	3.56±0.18	3.78±0.12	3.8	5.6	106.25
Co	Recipe level 1	2.20±0.11	2.31±0.06	3.7	9.6	105.09
Cu	Recipe level 1	871.00±43.55	835.01±19.72	1.3	9.7	95.87
Zn	Recipe level 1	925.00±46.25	873.12±14.57	1.1	8.7	94.39
As	Recipe level 1	47.80±2.40	52.75±2.92	7.7	10.9	110.36
Se	Recipe level 1	80.00±4	95.32±6.59	9.0	11.2	119.15
B	Pooled	24.04	23.57	3.7	10.8	98.04
Rb	Pooled	244.3	254.21	2.8	9.6	104.06
Sr	Pooled	36.4	33.51	2.4	7.9	92.03
Pb	Pooled	0.42	0.39	4.8	8.6	92.85
Al	Pooled	3.83	3.54	7.4	12.7	89.82
Mn	Pooled	2.38	2.44	3.3	4.5	102.52
Fe^#	Pooled	407.02	417.84	1.5	3.7	102.66

#Spike 0.5-times baseline.