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Table 2 Box and grid layout of MP in sediment filled boxes, green squares: square holes with MP, red squares: square holes without MP, for coring and suction techniques box areas were divided into four equal parts and a smaller perforated metal plate was used in each section, for freeze coring, the smaller perforated metal plate was placed in the middle of the box and MP were placed into four different sediment layers

From: Evaluation of microplastics sediment sampling techniques—efficiency of common methods and new approaches