Dung Thuy Nguyen

Dung Thuy Nguyen
Wageningen University & Research | WUR · Soil chemistry and Chemical soil quality

Master of Science
PhD candidate @WUR #microplastic in #soil polymer coated fertilizer #PlasticsAtWUR


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Citations since 2017
3 Research Items
3 Citations
PhD candidate in Wageningen University and Research - Detection of microplastic in soil and microplastic effect on soil organisms -
Additional affiliations
March 2020 - present
Water Resource Institute
  • Research Assistant
October 2019 - December 2019
NIOZ Royal Netherlands Institute for Sea Research
  • Intern
  • Fertilisation of marine life with desert dust Leach nutrients from desert dust with increasing corrosive chemicals to assess their bioavailability to marine life.
September 2018 - September 2019
University of Antwerp
  • Master's Student
  • Evaluation of the performance of a multi-contaminant passive sampler for water quality monitoring
September 2017 - February 2020
Vrije Universiteit Brussel - Ghent University - Antwerp University
Field of study
  • Marine and Lacustrine Science and Management
September 2012 - January 2016
University of Science and Technology of Hanoi
Field of study
  • Water-Environment-Oceanography


Publications (3)
Full-text available
Microplastics (MPs) are increasingly being studied because they have become ubiquitous in aquatic and terrestrial environments. For example, little is known about the negative effects of co-contamination by polypropylene microplastic (PP MPs) and heavy metal mixtures on terrestrial environment and biota. This study assesses the adverse effects of c...


Question (1)
I follow the soil sequential leaching procedure listed in this paper with a soil sample from Mauritania. The following is the basic steps.
The chemicals sequence are 1M Ammonium acetate => 1M Acid acetic => 1M Nitric acid => Burn in oven at 500 degree in 8 hours => Milli Q => Total digestion.
Samples are equilibrated for 24 hours. Supernatants are collected after centrifugation then the samples are washed with MQ to get rid of the chemicals. The wash solution are also collected after vortex and centrifugation. The samples are then resuspend in MQ and dry in oven overnight at 60 degree.
Nothing comes out in the first 3 steps. However, in the final Milli Q steps (after burning in oven at 500 degree), even after centrifugation, the supernatant is red and turbid. I let it sit for a few days but it didn't change. When I added concentrated Nitric acid (15M) to reach 1% concentration, the supernatants quickly flocculated and settled down as pic attached.
I tried adding 2mL HCl 32% into 0.5mL sludge then vortex but it doesn't dissolve at all. So what happens here?
I will try to test the sludge on XRF or SEM to know the composition of the sludge but I am interested in knowing what is the mechanism after this phenomenon. If there's any info I can provide/clarify please ask.
Thank you!


Cited By


Projects (4)
PCF is produced as a prill (Ø = 2-5 mm) consisting of a soluble mineral fertilizer core surrounded by a layer of polymer coating with the thickness ranging from 50-150 µm. Recently, with the proposal of restriction on intentionally added MP in products from European Chemical Agency (ECHA), PCF gained more attention as a significant MP contributor in soil. With the majority of studies on PCF recently focus on its nutrient/fertilizer content, the fate and effect of MP derived from PCF leave a substantial knowledge gap that is expanding rapidly. To bridge this knowledge gap, our project aims to assess impact of three PCF-derived MP to soil health.
Archived project
Determine the ecotoxicological effects of MP in Hanoi lake sediment to benthos with bioassays and sediment component analysis.
Archived project
Economic value of water resource in Vietnam