Linear Alkylbenzenesulfonates(LAS) Pollution in Headwaters Caused by Wastewater Discharge from Campgrounds.
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The effects of outdoor activities (i. e. camping) on water quality of headwaters were examined. Time-series observations (24 hrs and 12 hrs) were conducted in a tributary of the Tamagawa River in August and November 1992. LAS were detected in the headwaters below campgrounds in August. Their concentraions were 0.2 to 8.5μg⋅l<SUP>-1</SUP> and showed diurnal variation with maximums around mealtimes. The data indicate that LAS were derived from washing dishes during camping. The per capita discharge of LAS was calculated at 0.3 g⋅capita<SUP>-1</SUP>⋅d<SUP>-1</SUP>. On the other hand, no LAS were detected in the headwaters above the campgrounds and at the observation in November (off-season). No significant increase in concentrations of other chemical components (i. e. chloride, total organic carbon, and ammonium) in the headwaters was caused by camping.
- 日本陸水学会の論文
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