Figure 7B shows the fractions of ionic and particulate silvers measured by filtration/ICP−MS in water and a detergent solution. In water, both ionic and particulate silvers co-existed in a similar ratio throughout laundering cycles studied. However, in the detergent solution, a majority of silver existed as a particulate form. The percentage of ionic silver based on total silver was compared to the literature values. According to the ISE results (Figure 7C), the percentage of ionic silver in