TABLE 1

Precision and accuracy of concentration levels of calibration curve

Spiked concn
(ng · ml−1)
Determined concn (ng · ml−1)
(mean ± SD) (n = 3)
Precision
(% RSD)
Accuracy
(% RE)
5047.994 ± 6.88314.34−4.01
100101.828 ± 4.7984.711.83
400413.372 ± 32.8677.953.34
800812.695 ± 92.31411.361.59
1,5001,517.816 ± 7.7507.751.19
3,5003,674.722 ± 268.6347.314.99
5,0004,905.165 ± 483.0279.85−1.90
8,0008,517.975 ± 343.6514.036.47
12,00012,256.665 ± 412.0103.362.14
16,00015,189.454 ± 549.7003.62−5.07
20,00019,343.436 ± 942.3944.87−3.28