Mecoprop (lite osäker om det är någon anmärkningsvärd skillnad på Mecoprop och Mecoprop-P dock.
CITAT
Breakdown of Chemical in Soil and Groundwater: The duration of mecoprop's residual activity in soil is about two months. Adsorption of mecoprop increases with an increase in organic matter in the soil. Unaged MCPP and its salt forms are very mobile in a variety of soils (6). Because of this high mobility, it may potentially leach into groundwater (45). However, in general, phenoxy herbicides such as MCPP are not sufficiently persistent to reach groundwater (45).
http://extoxnet.orst.edu/pips/mecoprop.htmCITAT
Due to its solubility and low affinity for soil, mecoprop-p can easily leach. However, the level of drinking water contamination falls below the level of concern for acute toxicity
http://toxipedia.org/display/toxipedia/Mecoprop-pCITAT
MCPA is mostly insoluble in water (EPA). It has a field half-life of 14 days to one month, and has a low affinity for soil
http://toxipedia.org/display/toxipedia/MCPAJärn (ll) sulfatheptahydrat hittade jag ingen information om.