Madushika Sewwandi

Madushika Sewwandi
University of Sri Jayewardenepura · Ecosphere Resilience Research Center

BSc. Special in Chemical Technology
Research Assistant

About

14
Publications
1,682
Reads
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11
Citations
Citations since 2017
14 Research Items
11 Citations
201720182019202020212022202302468
201720182019202020212022202302468
201720182019202020212022202302468
201720182019202020212022202302468
Introduction
I completed my undergraduate studies at Sabaragamuwa University of Sri Lanka. I am graduated with a second upper division class in chemical technology. I worked as a temporary demonstrator in Chemistry at the same University. Now I am reading for my MPhil in Environmental Science at Post Graduate Institute of Science, University of Peradeniya, Sri Lanka and meanwhile working as a research assistant at Ecosphere Resilience Research Center, University of Sri Jayewardenepura, Sri Lanka.
Additional affiliations
October 2019 - March 2021
Sabaragamuwa University of Sri Lanka
Position
  • Temporary Demonstrator
Description
  • After I finished my undergraduate studies, I was appointed as temporary demonstrator. I worked at the Chemistry laboratory for nearly one and half period conducting practical classes of physical, inorganic, and organic chemistry.
February 2019 - May 2019
Celogen Lanka
Position
  • Quality Assurance Specialist
Description
  • I choosed this place to do my internship. During that time l could involve for raw material and packing material analysis, method validation procedures. Thus l could develop a new UV-VIS method to determine the DHA and EPA fatty acid level in a multivitamin capsule. I could validate that method according to the ICH- guildlines.
Education
May 2021 - May 2023
University of Peradeniya
Field of study
  • Environmental Science
April 2015 - September 2019

Publications

Publications (14)
Article
Abundance of buried microplastics in sand profiles and pellet pollution index at Sarakkuwa beach, at west-coast of Sri Lanka was studied as a case study due to the receival of plastic nurdles and debris from the MV X-Press Pearl ship disaster in May 2021. Sand collected at 7 locations to a depth of 2 m in different depths for a beach segment of 200...
Article
The objectives of the research was to assess the coastal pollution by plastic nurdles, pyrolitic debris, associated potential toxic elements (PTEs) concentrations and mitigatory efforts by the worst ever maritime accident of a chemical and plastic boarded container vessel; MV X-press Pearl. Field sampling was carried out three times during May, Jun...
Article
Microplastics has become a global concern due to their ubiquitous presence which poses unavoidable human exposure risks. Geographical distribution and yearly trends of research on microplastics, food, and beverages do not exist. Thus, no overall account is available regarding the presence of microplastics and plastics-associated contaminants in foo...
Article
Microplastics act as a vector for toxic trace metals and their surface complexation mechanisms under different environmental conditions are poorly understood. The present study evaluates the interaction mechanisms of pristine and aged polyethylene (PE) microplastics with Pb²⁺ in water environments in the presence of NaNO3 and humic acid (HA). The i...
Article
Microplastics can act as a vector to transport various organic and inorganic contaminants. Hydrophobic and hydrophilic organic contaminants tend to bind to microplastics due to their hydrophobicity and high surface area to volume ratio. Recent studies have focused their attention on evaluating the ability of microplastics to bind potentially toxic...
Conference Paper
Microplastics and caffeine co-occur in wastewater due to their vital usage. The hydrophobicity of microplastics enriches their potency to interact with caffeine in water, however studies on vector transportation of microplastic-bound caffeine is still in its infancy. Therefore, caffeine adsorption to pristine and aged polyethylene (PE) microplastic...
Chapter
Full-text available
Endocrine-disrupting chemicals (EDCs) such as natural estrogens, bisphenol A, and nonylphenol are widely spread in the environment due to improper waste disposal. Emergence of EDCs mainly occurs from widely used consumer products like pharmaceuticals, personal care products, plastic preservatives, pesticides, and industrial lubricants. Both acute a...
Conference Paper
Full-text available
The sorption medium plays a vital role in vector transport of microplastics bound metal ions. The influence of soapy water on transportation of microplastics bound Cr(VI) and sorption mechanisms are still not clear. Therefore, in the present study the performance of pristine and aged polyethylene (PE) microplastics to adsorb Cr(VI) in soapy water w...
Conference Paper
Full-text available
Background: Microplastics are lightweight materials, and found ubiquitously in the aquatic environment due to the discharge of primary and secondary plastics. Pb2+ is a common micropollutant found in water discharged from wastewater from industries, service stations, and landfill leachate. Thus, microplastics are considered as a vector to transport...
Conference Paper
Full-text available
Diclofenac Sodium is a commonly used electro-active anti-inflammatory drug. There are various analytical techniques to detect Diclofenac Sodium active ingredient including cyclic voltammetry. Cyclic voltammetry was used with different kinds of modified electrodes. In this project, drug release action of Diclofenac Sodium is detected by introducing...
Conference Paper
Full-text available
Diclofenac sodium is a commonly used anti-inflammatory delayed released drug. Determination of delayed release behavior of diclofenac sodium by using easy technique in the industry is very important because from that the quality of bi-layered coat design can be checked out easily. There are various techniques for detection of diclofenac sodium acco...
Conference Paper
Full-text available
Docosahexaenoic acid (DHA) and Eicosapentaenoic acid (EPA) are the most popular health beneficial omega-3 fatty acids which are mainly isolated from marine fish oils. DHA and EPA are commonly used as nutritious ingredients of several infant food products. Of these products, DHA containing multivitamins are very popular as supplements for pregnant o...
Poster
Full-text available
This poster consists of the experimental data of the development and validation of an effective and efficient UV spectroscopic in-house method to determine DHA/EPA level as a mixture in soft gelatin capsule medicament.

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