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μ“√“ß∑’Ë 4 §à“ %recovery ∑’Ë√–¥—∫§«“¡‡¢â¡¢âπª“π°≈“ß (mid)

Control sample Add Found (§«“¡‡¢â¡¢âπ∑’Ë«—¥‰¥â)
“√¡“μ√∞“π (%recovery)
(ppm) (ppm) (ppm)

“√ D 130.12 70.00 199.74 99.46
“√ 1 142.57 75.00 216.35 98.37
“√ 2 32.64 67.00 99.43 99.69
“√ 3 60.39 73.5 133.81 99.89

μ“√“ß∑’Ë 5 §à“ %recovery ∑’Ë√–¥—∫§«“¡‡¢â¡¢âπ Ÿß (high)

Control sample Add Found (§«“¡‡¢â¡¢âπ
“√¡“μ√∞“π (%recovery)
(ppm) (ppm) ∑’Ë«—¥‰¥â) (ppm)

“√ D 130.12 140.00 268.33 98.72
“√ 1 142.57 150.00 290.39 98.55
“√ 2 32.64 134.00 165.89 99.44
“√ 3 60.39 147.00 205.98 99.04

®“°º≈ % recovery ∑’ˉ¥â æ∫«à“ “√∑—Èß 4 ™π‘¥ μ“√“ß∑’Ë 6 §à“ precision (%RSD)
¡’§à“μ“¡™à«ßμàÕ‰ªπ’È
Precisions (%RSD)
“√ D ¡’§à“ % recovery „π™à«ß 98.72- “√
Intra-day Inter-day
101.23%
“√ D 0.121 0.173
“√ 1 ¡’§à“ % recovery „π™à«ß 98.37-
“√ 1 0.245 0.369
102% “√ 2 0.195 0.332
“√ 2 ¡’§à“ % recovery „π™à«ß 99.44- “√ 3 0.160 0.252

99.85%
·≈– “√ 3 ¡’§à“ % recovery „π™à«ß 98.58- μ“√“ß∑’Ë 7 §à“ LOQ ·≈– LOD ¢Õß°“√«‘‡§√“–Àå

99.89%
¢’¥®”°—¥¢Õß ¢’¥®”°—¥
3.3 Precision º≈°“√«‘‡§√“–Àå§à“ preci-
“√ °“√«‘‡§√“–Àå ¢Õß°“√«—¥
sion ¢Õß “√¡“μ√∞“π “√ D °—∫ “√ 1, 2 ·≈– 3 (LOQ) (ppm.) (LOD) (ppm.)

· ¥ß¥—ßμ“√“ß∑’Ë 6
“√ D 4 1.2
3.4 Limit of Quantitation (LOQ) §à“ “√ 1 10 3.3
¢’¥®”°—¥¢Õß°“√«‘‡§√“–Àå ·≈– Limit of Detection “√ 2 4 1.2
“√ 3 4 1.2
(LOD) ¢’¥®”°—¥¢Õß°“√«—¥ À“‰¥â®“°™à«ß§«“¡‡¢â¡