Occurrence, spatial distribution, and partitioning behaviour of marine lipophilic phycotoxins in the Pearl River Estuary, South China

marine_lipophilic_phycotoxins-(MLPs)-c copy — Spatial distribution and phase partitioning of marine lipophilic phycotoxins (MLPs) in seawater, particulate organic matter (POM), and sediment in the surface and bottom marine environment of the Pearl River Estuary.

Involved Members: Prof. Paul Kwan Sing LAM, Dr. Phoebe Yuefei RUAN, Dr. Meng YAN

We investigated the levels and composition profiles of 17 marine lipophilic phycotoxins (MLPs) in surface and bottom seawater, surface and bottom particulate organic matter (POM), and surface sediment in the Pearl River Estuary (PRE) in the wet season of 2020. Nine MLPs were detected, including azaspiracid1-3, gymnodimine, okadaic acid, dinophysistoxin 1-2, pectenotoxin2, and homoyessotoxin. The affinity of MLPs for the aquatic environment components (from highest to lowest) was as follows: POM > seawater > sediment. Lower ΣMLP levels in the seawater were found at the mouth of the PRE, and gradually increased with increasing distance offshore.

Reference:

Li, J., Ruan, Y.F., Wu, R., Cui, Y., Shen, J., Mak, Y.L., Wang Q, Zhang, K., Yan, M., Wu, J., Lam, P.K.S. (2022). Occurrence, Spatial Distribution, and Partitioning Behavior of Marine Lipophilic Phycotoxins in the Pearl River Estuary, South China. Environmental Pollution, 310, 119875. (impact factor 9.988)