Solved: An impurity in water has an extinction coefficient
Chapter , Problem 84ie(choose chapter or problem)
Problem 84ie
An impurity in water has an extinction coefficient of 3.45 x 103 M-1 cm-1 at 280 nm. its absorption maximum (A Closer Look. p. 582). Below 50 ppb. the impurity is not a problem for human health. Given that most spectrometers cannot detect absorbances less than 0.0001 with good reliability, is measuring the absorbance of a water sample at 280 nm a good way to detect concentrations of the impurity above the 50-ppb threshold?
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