Recovery and precision (RSD%) study of TC in real samples (full fat milk, skim milk, honey)^a.

	TC Added(M)	TC found (M)	Recovery (%)	RSD (%, N = 3)
Full fat milk	0	ND	ND	ND
	5.00 × 10−6	4.83 × 10−6	96.60	11.17
	2.50 × 10−6	2.73 × 10−6	109.20	10.09
	5.00 × 10−7	5.44 × 10−7	108.80	9.19
Skim milk	0	ND	ND	ND
	5.00 × 10−7	5.46 × 10−7	109.20	5.50
	2.50 × 10−7	2.62 × 10−7	104.80	10.32
	5.00 × 10−8	4.76 × 10−8	95.20	7.15
Honey	0	ND	ND	ND
	5.00 × 10−7	4.69 × 10−7	93.80	8.26
	2.50 × 10−7	2.49 × 10−7	99.60	6.33
	5.00 × 10−8	5.06 × 10−8	101.20	9.58

^aND means not detected.