$4\mathrm{.}2$F$.$ Evaporation and Dissolution of Cumene and Nonane from Small

Sea$-$Surface Slicks ${?}^{33}$

A small sea$-$surface slick was created by placing $275$gal$(1\mathrm{.}04m^3)$ of crude oil

spiked with cumene $(c_{A4}^0=0\mathrm{.}34\frac{\text{m}\text{o}\text{l}}{L}).$ Water temperature was essentially

constant at $23\mathrm{.}6C,$ air temperature was $20\mathrm{.}5$ to $24\mathrm{.}1C,$ relative humidity was

$60$ to $79\%,$ wind at $3m$ was calm to $18mph$ with gusts to $22mph(9\mathrm{.}8\frac{m}{s}),$

and sea$-$surface conditions ranged from calm with gentle swell to extensively

whitecap covered.

Compute the time $(min)$ for $63\%$ of the cumene to disappear from a slick

$1mm$ in thickness. Use the following data: spread

over $\{$:${10}^3{m}^2)$;${?}^4{k}_{A1}^{\text{'}}=1E-2\frac{m}{s},{?}^4{k}_{A2}^{\text{'}}=5\mathrm{.}5E-5\frac{m}{s}$;$p_A^{**}=5\mathrm{.}3E-3$ atm

$mmHg.$ Compare the computed time with the

observed times reported in the text.

Compute the time $(min)$ for $63\%$ of the original nonane to disappear. Use

the following data: $p_A^{**}=3\mathrm{.}0mmHg$;$c_{A2}^{**}=0\mathrm{.}22m\frac{g}{L}.$