\begin{table}%t8
\caption{Integration of other organic  peaks  present in the spectra
after the HF treatment.\label{1700}}
%%\centerline
\par
{
\begin{tabular}{ccccccccc}
\hline\hline
IDP & area[3600$-$2400] & $N$[3600$-$2400] & area[$\sim$1700] & $N$[$\sim$1700] & area[$\sim$1600] & $N$[$\sim$1600] & area[$\sim$1585] & $N$[$\sim$1585] \\
&        & OH~cm$^{-2}$ &         & C=O cm$^{-2}$ &   & C cm$^{-2}$ &     & COO$^-$ cm$^{-2}$ \\
&   carb. ac./hyd. sil.$^a$  & carb. ac./hyd. sil.$^a$      & carb. ac./ket.$^b$ & carb. ac./ket.$^b$ & arom.$^c$ & arom.$^c$ & carb. ac. salt$^d$ & carb. ac. salt$^d$ \\
 \hline
L2036-E19 & --   & --            & --   & --            & --    & --            & -- & --\\
L2021-K3  & 0.67 & $5.5 \times 10^{15}$ & 0.16 & $1.2 \times 10^{16}$ & 0.097 & $1.9 \times 10^{17}$ & -- & --\\
L2021-K2  & 2.21 & $1.8 \times 10^{16}$ & --	& --            & --    & --	& 0.98 & $3.8 \times 10^{16}$\\
L2011-F2  & 0.79 & $6.5 \times 10^{15}$ & 0.08 & $5.8 \times 10^{15}$ & --    & --           & 0.08 & $3.1 \times 10^{15}$ \\
W7116B-N  & 1.37 & $1.1 \times 10^{16}$ & 0.24 & $1.8 \times 10^{16}$ & 0.26 & $5.0 \times 10^{17}$ & -- & --\\
W7116B-Y  & 1.11 & $9.1 \times 10^{15}$ & 0.12 & $8.9 \times 10^{15}$ & --   & --            & 0.19 & $7.3 \times 10^{15}$ \\
W7116B-U  & 0.41 & $3.3 \times 10^{15}$ & 0.14 & $1.0 \times 10^{16}$ & 0.18 & $3.5 \times 10^{17}$ & -- & --\\
\hline
\end{tabular}}
\medskip
$^a$ This band will have a contribution of the OH stretch in hydrated silicates, and a contribution of the OH str. in carboxylic acids. For calculation of $N$[3600$-$2400], we used $A=2.8\times 10^{-16}$~cm (OH bond)$^{-1}$ for carboxylic acids, see Table~\ref{strengths}. \\
$^b$ The band is probably due to the C=O stretch of ketones with a contribution of carboxylic acids. For calculation of $N$[$\sim$1700], we used $A=3.2\times 10^{-17}$~cm (CO bond)$^{-1}$ for carboxylic acids. The
column density using the band strength of ketones is 2.7 times larger, see Table~\ref{strengths}.\\
$^c$ Using $A=1.2\times 10^{-18}$~cm (C~atom)$^{-1}$, for naphtalene in Ar matrix, see Table~\ref{strengths}.\\
$^d$ Using $A=6.0\times 10^{-17}$~cm (COO$^-$)$^{-1}$, see Table~\ref{strengths}. The values given for L2021-K2 correspond to the spectrum before HF treatment, as the salt is expected to be affected by hydrolysis. Indeed, for this particle, area[$\sim$1585] decreased by $\sim$25\% upon hydrolysis.
\end{table}