Gradient of suspended particulate matter hastens the multi-interface partition dynamics of atrazine and its degradation products.

Herbicides are ubiquitous pollutants in estuaries because of the increased demand for food and the need for intensive agricultural systems worldwide. Multi-interface partitioning processes are inadequate for the degradation products of herbicides, especially in sediment-laden river estuaries with intensive water and sediment partitioning. Therefore, the partition characteristics of atrazine and its degradation products at the surface water-suspended particulate matter (SPM), surface water-surface sediment, and SPM-surface sediment interfaces in a typical sediment-laden river estuary were analyzed, the dominant environmental factors were described, and the related mechanisms were explored. The results showed that the partitioning priority of atrazine and its degradation products was surface water > SPM > surface sediment. The partition coefficients of these three interfaces were significantly correlated. The primary degradation products and desisopropylhydroxyatrazine tended to partition into the SPM, and desethyldesisopropylatrazine tended to partition into the surface sediment. Canonical analysis and structural equation modeling indicated that temperature, salinity, sediment pH, and SPM concentrations were the main influencing factors. In the sediment-laden river estuary, the SPM concentration was the most dominant factor. The partition coefficients increased exponentially when the SPM concentration was <150 mg/L at the SPM-surface sediment interface, leading to a rapid shift in the interface proportion of atrazine and its degradation products. In the context of climate change and human activities, the SPM concentration in the estuary was decreasing, which hastened the release potential for atrazine and its degradation products from the estuarine sediment. The investigation of the partition traits of organic degradation pollutants promotes the understanding of the multi-interface transport processes in estuaries.

[1]  C. Renshaw,et al.  Rapid changes to global river suspended sediment flux by humans , 2022, Science.

[2]  M. Currell,et al.  Screening of Atrazine Distribution in Groundwater and Modeling of Leaching Potential to the Unconfined Aquifer in the Pampean Plain of Cordoba, Argentina , 2022, Environmental Processes.

[3]  Qiuwen Chen,et al.  Key role of suspended particulate matter in assessing fate and risk of endocrine disrupting compounds in a complex river-lake system. , 2022, Journal of hazardous materials.

[4]  Xiangfeng Chen,et al.  Fate and ecological risks of current-use pesticides in seawater and sediment of the Yellow Sea and East China Sea. , 2022, Environmental research.

[5]  G. Prasicek,et al.  The impact of glaciers on mountain erosion , 2021, Nature Reviews Earth & Environment.

[6]  P. Peres‐Neto,et al.  Generalizing hierarchical and variation partitioning in multiple regression and canonical analyses using the rdacca.hp R package , 2021, Methods in Ecology and Evolution.

[7]  W. Ouyang,et al.  Typical herbicide residues, trophic transfer, bioconcentration, and health risk of marine organisms. , 2021, Environment international.

[8]  W. Ouyang,et al.  Metabolic process and spatial partition dynamics of Atrazine in an estuary-to-bay system, Jiaozhou bay. , 2021, Journal of hazardous materials.

[9]  Suquan Song,et al.  Aquaculture-derived distribution, partitioning, migration, and transformation of atrazine and its metabolites in seawater, sediment, and organisms from a typical semi-closed mariculture bay. , 2020, Environmental pollution.

[10]  H. Cabana,et al.  Predicting atrazine concentrations in waterbodies across the contiguous United States: The importance of land use, hydrology, and water physicochemistry , 2020, Limnology and Oceanography.

[11]  Xinming Wang,et al.  Legacy and novel halogenated flame retardants in seawater and atmosphere of the Bohai Sea: Spatial trends, seasonal variations, and influencing factors. , 2020, Water research.

[12]  Zhongwu Li,et al.  Key drivers of changes in the sediment loads of Chinese rivers discharging to the oceans , 2020 .

[13]  D. Barceló,et al.  Seasonal relevance of agricultural diffuse pollutant with microplastic in the bay. , 2020, Journal of hazardous materials.

[14]  Wesley W. Stone,et al.  Causal factors for pesticide trends in streams of the United States: Atrazine and deethylatrazine. , 2020, Journal of environmental quality.

[15]  Peng Li,et al.  Spatiotemporal dynamics of suspended particulate matter in the Yellow River Estuary, China during the past two decades based on time-series Landsat and Sentinel-2 data. , 2019, Marine pollution bulletin.

[16]  Xinming Wang,et al.  Fates and ecological effects of current-use pesticides (CUPs) in a typical river-estuarine system of Laizhou Bay, North China. , 2019, Environmental pollution.

[17]  W. Ouyang,et al.  Occurrence, transportation, and distribution difference of typical herbicides from estuary to bay. , 2019, Environment international.

[18]  Sung Vo Duy,et al.  Widespread occurrence and spatial distribution of glyphosate, atrazine, and neonicotinoids pesticides in the St. Lawrence and tributary rivers. , 2019, Environmental pollution.

[19]  Fei Liu,et al.  Spatiotemporal distributions of Cu, Zn, metribuzin, atrazine, and their transformation products in the surface water of a small plain stream in eastern China , 2019, Environmental Monitoring and Assessment.

[20]  Xuepeng Wang,et al.  Occurrence, distribution and ecological risks of antibiotics and pesticides in coastal waters around Liaodong Peninsula, China. , 2019, The Science of the total environment.

[21]  Yonggang Jia,et al.  Contribution of waves and currents to sediment resuspension in the Yellow River Delta , 2019 .

[22]  Kate M. Buckeridge,et al.  Land use driven change in soil pH affects microbial carbon cycling processes , 2018, Nature Communications.

[23]  Pasquale Sarnacchiaro,et al.  Some remarks on measurement models in the structural equation model: an application for socially responsible food consumption , 2018 .

[24]  James P. M. Syvitski,et al.  Substantial export of suspended sediment to the global oceans from glacial erosion in Greenland , 2017 .

[25]  K. Armbrust,et al.  Salinity impacts on water solubility and n‐octanol/water partition coefficients of selected pesticides and oil constituents , 2017, Environmental toxicology and chemistry.

[26]  J. Storms,et al.  Contemporary suspended sediment dynamics within two partly glacierized mountain drainage basins in western Norway (Erdalen and Bødalen, inner Nordfjord) , 2017 .

[27]  Melody J. Bernot,et al.  Pesticide and nitrate transport in an agriculturally influenced stream in Indiana , 2017, Environmental Monitoring and Assessment.

[28]  Y. Saito,et al.  Modern sediment characteristics and accumulation rates from the delta front to prodelta of the Yellow River (Huanghe) , 2016, Geo-Marine Letters.

[29]  O. Tuovinen,et al.  Mineralization of atrazine in the river water intake and sediments of a constructed flow-through wetland , 2014 .

[30]  H. Vereecken,et al.  Atrazine soil core residue analysis from an agricultural field 21 years after its ban. , 2014, Journal of environmental quality.

[31]  T. Potter,et al.  Atrazine fate and transport within the coastal zone in southeastern Puerto Rico. , 2013, Marine pollution bulletin.

[32]  Harish Gupta,et al.  The role of mega dams in reducing sediment fluxes: A case study of large Asian rivers , 2012 .

[33]  R. Cavalcante,et al.  Relation factor: a new strategy for quality control in the determination of pesticides in environmental aqueous matrices. , 2012, Talanta.

[34]  Murugesu Sivapalan,et al.  Spatiotemporal scaling of hydrological and agrochemical export dynamics in a tile‐drained Midwestern watershed , 2011 .

[35]  Xiaojun Luo,et al.  Distribution and partition of polycyclic aromatic hydrocarbon in surface water of the Pearl River Estuary, South China , 2008, Environmental monitoring and assessment.

[36]  Wei Guo,et al.  Distribution of polycyclic aromatic hydrocarbons in water, suspended particulate matter and sediment from Daliao River watershed, China. , 2007, Chemosphere.

[37]  J. Albaigés,et al.  Organic contaminant loads into the Western Mediterranean Sea: estimate of Ebro River inputs. , 2006, Chemosphere.

[38]  Meng Chen,et al.  Distribution and sources of polynuclear aromatic hydrocarbons in Mangrove surficial sediments of Deep Bay, China. , 2004, Marine pollution bulletin.

[39]  M. Kaštelan-macan,et al.  Ultrasonic solvent extraction of pesticides from soil , 1998 .

[40]  R. Samperi,et al.  Ultratrace Determination of Atrazine and Its Six Major Degradation Products in Water by Solid-Phase Extraction and Liquid Chromatography−Electrospray/Mass Spectrometry , 1997 .

[41]  E. Alberts,et al.  Hydroxylated atrazine degradation products in a small missouri stream. , 1995, Environmental science & technology.

[42]  Ronald D. Anderson,et al.  The influence of salinity and sediment on the loss of atra8ine from the water column , 1995 .

[43]  D. Barceló,et al.  Analysis of chlorotriazines and their degradation products in environmental samples by selecting various operating modes in thermospray HPLC/MS/MS , 1993 .

[44]  H. Rogers.  Speciation and partitioning of priority organic contaminants in estuarine waters , 1993 .

[45]  W. Kemp,et al.  Degradation of atrazine in estuarine water/sediment systems and soils. , 1982 .

[46]  R. Green,et al.  Degradation of Atrazine in Four Hawaiian Soils , 1969, Weed Science.

[47]  Clifford A. Ochs,et al.  Bacterial production in the Lower Mississippi River: importance of suspended sediment and phytoplankton biomass , 2009, Hydrobiologia.

[48]  T. Albanis,et al.  Photodegradation of selected herbicides in various natural waters and soils under environmental conditions. , 2001, Journal of environmental quality.

[49]  C. Langford,et al.  Interaction of atrazine with Laurentian humic acid , 1991 .

[50]  D. Glotfelty,et al.  Atrazine and simazine movement to Wye River estuary , 1984 .

[51]  J. Wahren.  Quantitative aspects of blood flow and oxygen uptake in the human forearm during rhythmic exercise. , 1966, Acta physiologica Scandinavica. Supplementum.