We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Effect of tidal current on the settling and accumulation of microplastics in the Chao Phraya River estuary, Thailand
Summary
Researchers investigated the effect of tidal currents on the settling and accumulation of microplastics in the Chao Phraya River estuary during a mixed spring tidal cycle, deploying sediment traps at 3 meters depth during flood and ebb tides. The study found that tidal dynamics significantly influence where and how microplastics are deposited in estuarine sediments.
The deposition of MPs in a water column and surface sediment during a mixed spring tidal cycle of the Chao Phraya River estuary was investigated. The settling MPs during flood and ebb tides were collected by deploying traps at 3 m below the surface, while the settled MPs throughout the tidal cycle were collected by deploying traps at 1 m above the bottom. The settling rate of MPs was 2168 pieces/m/h during highest to low tide, and 639 pieces/m/h during high to lowest tide. The deposition rate of MPs after the end of the tidal cycle was 3172 pieces/m/day, while the accumulation rate of MPs in the surface sediment was 1515 pieces/m/day. The settling MPs tended to decrease inversely to the suspended solids and salinity. The major types of the deposited MPs were polyethylene (36 %) and polyamide (33 %), while that of the surface sediment was epoxy resin (80 %).
Sign in to start a discussion.
More Papers Like This
Horizontal variation of microplastics with tidal fluctuation in the Chao Phraya River Estuary, Thailand
Microplastic concentrations and composition in the Chao Phraya River Estuary in Thailand varied with tidal cycle, with flood tides increasing marine-sourced particles and ebb tides flushing river-derived fragments, showing that tidal dynamics must be accounted for in estuarine microplastic sampling designs.
Suspended microplastics during a tidal cycle in sea-surface waters around Chao Phraya River mouth, Thailand
Researchers sampled microplastics from surface waters around the Chao Phraya River mouth in Thailand during low and high tides. Microplastic concentrations were significantly lower during spring tide than neap tide, suggesting that tidal dynamics play an important role in how plastic particles are distributed and diluted in coastal waters.
Vertical distribution and river-sea transport of microplastics with tidal fluctuation in a subtropical estuary, China
Researchers investigated how tidal fluctuation affects the vertical distribution and river-sea transport of microplastics in a subtropical estuary in China, finding that tidal dynamics significantly influence microplastic size, concentration, and movement between river and marine environments.
Occurrence of microplastics and ecological risk assessment during tidal changes in the Chao Phraya River estuary, Thailand
This study was the first to assess how tidal changes affect microplastic concentrations in the Chao Phraya River estuary in Thailand, finding abundances ranging from 1.37 to 4.51 pieces per liter across the tidal cycle. Fibers and fragments dominated, with ecological risk assessed as moderate.
Dynamics of microplastic abundance under tidal fluctuation in Musi estuary, Indonesia
This first study of microplastic dynamics under tidal influence in the Musi River Estuary, Indonesia, found that particle abundance fluctuated with flood and ebb tides, with tidal forcing shaping microplastic transport across estuarine zones.