Please add spaces between words: Withrespecttodegradationinsurfacewaters,investigationsperformedinlightedcondtionshalf-livesof1-50days,withanaveragevalueofapproximately10days,whereasinvestigationsperformedundercondtionsofnolightshowedhalf-livesof7-245days.
With respect to degradation in surface waters, investigations performed in lighted condtions half-lives of 1-50 days, with an average value of approximately 10 days, whereas investigations performed under condtions of no light showed half-lives of 7-245 days.