Standard addition graph. Tooth enamel consists mainly of the mineral calcium hydroxyapatite, Ca10(PO4)6(OH)2. Trace elements in teeth
Question:
(a) Find the concentration of Sr and its uncertainty in the 10-mL sample solution in parts per billion = ng/mL.
(b) Find the concentration of Sr in tooth enamel in parts per million = μg/g.
(c) If the standard addition intercept is the major source of uncertainty, find the uncertainty in the concentration of Sr in tooth enamel in parts per million.
(d) Find the 95% confidence interval for Sr in tooth enamel.
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