Refer to the analysis of 372 126805 ice downstairs.
Now I think the experimental results (ice melts faster in clear water) can be explained as follows:
Because the specific heat of salt water is less than that of water, the heat released by salt water is less than that of clear water at the same temperature drop, so the ice in clear water melts faster.
For the specific heat of brine, please refer to the journal of Qinghai University "Determining the specific heat capacity of brine by Newton's cooling law".
By measuring the specific heat capacity of brine solutions with different concentrations, it is concluded that the specific heat capacity of liquid decreases with the increase of concentration.
Author: He Xiaoming, Journal of Qinghai University (Natural Science Edition), No.04, 2007.
/A-ISSN ~ 1006-8996(2007)04-0085-03 . html