ingkurning.com phprd 3863633 Map. Sapling Learning maomillan learning A sample o

Question

ingkurning.com phprd 3863633 Map. Sapling Learning maomillan learning A sample of pure water was spiked with 0.615 ng/mL silver ion. Ten replicate deterrninations of the spiked water sample gave 0.625, 0.605, 0.582, 0.568, 0.609, 0.589, 0.593, 0.597, 0.575, and 0.560 ng/mL silver ion. Determine the mean percent recovery of the spike and the detection limit (in ng/mL) of the analytical method used for silver ion determination. Detection limit: Mean percent recovery: Number Number % recovery ng/mL Exit Previous Give Up & View Solution e Check Answer e Next Hint Begin by determining the mean and standard deviation of the replicate determinations of silver ion. ^ds) ENG 9 /12/2017

Explanation / Answer

Mean silver ion = 0.5903

SD = 0.198

y blank = 0

% recovery = 100* (0.5903 - 0)/0.615

% recovery = 95.98%

Detection limit = 3 * SD = 3 * 0.198 = 0.594

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.