Applied Biological Chemistry

Table 6 LOQ of the developed analytical method

From: Establishment of analysis method for the quantification of residues of halquinol and its metabolites in livestock and fishery products using liquid chromatography–tandem mass spectrometry

Compound	Sample	LOQ (mg kg⁻¹)
Compound	Sample	Institution A^a	Institution B^b	Institution C^c	Inter-lab	Final
Beef	5-CHQ	0.0040	0.0027	0.0041	0.0041	0.005
	5,7-DCHQ	0.0035	0.0013	0.0044	0.0044
	5-CHQG	0.0050	0.0039	0.0048	0.0050
	5,7-DCHQG	0.0033	0.0023	0.0043	0.0043
Pork muscle	5-CHQ	0.0048	0.0089	0.0091	0.0091	0.01
	5,7-DCHQ	0.0078	0.0061	0.0080	0.0080
	5-CHQG	0.0036	0.0046	0.0044	0.0046
	5,7-DCHQG	0.0049	0.0091	0.0031	0.0091
Pork fat	5-CHQ	0.0016	0.0035	0.0031	0.0035	0.005
	5,7-DCHQ	0.0046	0.0050	0.0038	0.0050
	5-CHQG	0.0038	0.0047	0.0041	0.0047
	5,7-DCHQG	0.0038	0.0022	0.0031	0.0038
Chicken	5-CHQ	0.0046	0.0013	0.0011	0.0046	0.005
	5,7-DCHQ	0.0025	0.0010	0.0021	0.0025
	5-CHQG	0.0035	0.0027	0.0022	0.0035
	5,7-DCHQG	0.0046	0.0018	0.0031	0.0046
Egg	5-CHQ	0.0048	0.0032	0.0043	0.0048	0.005
	5,7-DCHQ	0.0036	0.0039	0.0029	0.0039
	5-CHQG	0.0033	0.0026	0.0030	0.0033
	5,7-DCHQG	0.0047	0.0025	0.0039	0.0047
Milk	5-CHQ	0.0050	0.0035	0.0034	0.0050	0.005
	5,7-DCHQ	0.0050	0.0017	0.0028	0.0050
	5-CHQG	0.0036	0.0041	0.0032	0.0041
	5,7-DCHQG	0.0050	0.0044	0.0049	0.0050
Flat fish	5-CHQ	0.0033	0.0013	0.0031	0.0033	0.005
	5,7-DCHQ	0.0050	0.0041	0.0044	0.0050
	5-CHQG	0.0037	0.0020	0.0031	0.0037
	5,7-DCHQG	0.0050	0.0044	0.0031	0.0050
Eel	5-CHQ	0.0029	0.0039	0.0038	0.0039	0.005
	5,7-DCHQ	0.0050	0.0045	0.0048	0.0050
	5-CHQG	0.0032	0.0031	0.0019	0.0032
	5,7-DCHQG	0.0046	0.0050	0.0044	0.0050
Shrimp	5-CHQ	0.0033	0.0026	0.0029	0.0033	0.005
	5,7-DCHQ	0.0042	0.0044	0.0039	0.0044
	5-CHQG	0.0033	0.0017	0.0011	0.0033
	5,7-DCHQG	0.0039	0.0046	0.0041	0.0046

^aNIFDS; ^bSRFDA, ^cSGS

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