Extraction of Parquat from Blood by Clinoptilolite
Table 1
Recovery, limit of detection, limit of quantification, and within-laboratory error of paraquat extraction by Amberlite and clinoptilolite from different matrices.
Experiment number
Experimental group
% recovery (mean ± sd)
LOD (μg/mL)
LOQ (μg/mL)
Repeatability (%RSD)
1
Extraction of paraquat from blood by methanol
0.91
3.03
2.4
2
Extraction of paraquat from aqueous solution by Amberlite
0.34
1.13
3.5
3
Extraction of paraquat from aqueous solution by clinoptilolite
0.43
1.43
4.3
4
Extraction of paraquat from blood by Amberlite
0.49
1.63
6.3
5
Extraction of paraquat from blood by clinoptilolite
0.58
1.93
7.1
LOD: limit of detection; LOQ: limit of quantification; WRE: within-laboratory error; RSD: relative standard deviation. *Significantly ( value < 0.05) lower than maximum extraction recovery of 100.