Mrinal Sengupta

Research Associate

Ph. D. (Science)

 Sengupta@uta.edu


Research Profile

 Gas phase chemiluminescence base analyzer (GPCL analyzer)

  1. Setting up the gas phase chemiluminescence based analyzer (GPCL)  for the determination on arsenic                                                                                                                                                                               
  2. Optimizing the GPCL setup for generating equal sensitivity for As(III) and As(V) and to get the better reproducibility among individual samples.                                                                                                             
  3. Validated the system by analyzing total As in soil/dust samples and compared its result with ICP-MS.                
  1. Also set up a low cost version of GPCL analyzers by replacing the automated dispensing version with a manual sample and reagent delivery setup.

Liquid Chromatographic coupled with GPCL setup for speciating As (LC-GPCL)

  1. Setting up the post column gas phase chemiluminescence system (LC-GPCL system) for separation and detection of inorganic & organic As species [As(III), As(V), DMA & MMA] in a sample.

  2. Optimizing the conditions for generating distinct chromatogram for all the species.

  3. Validated the system by analyzing As species in soil/dust samples and compared the sum total As species with ICP-MS.

Hydride generation – ICP MS method for total As measurement (HG- ICP MS)

  1. Setting up two different modes Hydride generation – ICP MS namely FI-UV-HG-ICPMS and SI-HG-ICPMS for the determination of ppt level of arsenic in the samples.

  2. Optimizing the reaction time, reagent and reagent flow.

  3. Validating the system by measuring total As NIST- SRM, also analyzing As content in rice samples collected from As contaminated areas.

Liquid Chromatography coupled with Hydride generation-ICPMS for As speciation (LC-UV-HG-ICPMS)

  1. Setting up of chromatographic system attached to the hydride generation setup for measuring ppt levels of As species in samples

  2. Optimizing the eluents and eluent timings.

  3. Validating the system by measuring As species in NIST- SRM and analyzing As species in rice samples collected from As contaminated areas.

A simple setup for electrochemical generation of arsine

  1. Working on generating of arsine by a simple electrochemical setup where the electrodes selected are graphite rods as cathode and platinum foil/gauge as an anode. 

      

Arsenic (As) is a metalloid widely distributed in the earth’s crust and ranked 20th most abundant element in the earth. This element is included in the U.S. Environmental Protection Agency’s list of priority pollutants with an atomic number of 33 and an atomic mass of 74.91 and can exist in four valency states: -3, 0, +3 and +5. This toxic element has deleterious effects on human health through contamination of the food chain or drinking water. The health effects due to chronic exposure to inorganic arsenic in the drinking water may manifest themselves primarily in dermatological features such as melanosis (pigmentation) and keratosis (rough, dry, papular skin lesions), both may be spotted or diffuse along with gastrointestinal, liver, respiratory, neurological, hematological, cardiovascular, obstetric, diabetic effects and other factors. It is thought that chronic arsenic exposure may cause multisystemic disorder. Ingestion of inorganic arsenic has been shown to cause even skin cancer, bladder, and lung cancer; thus inorganic arsenic is classified by the International Agency for Research on Cancer as Class A human carcinogen.

Over the past three decades, occurrence of high concentrations of arsenic in drinking-water has been recognized as a major public-health concern in several parts of the world. Hence time-to-time monitoring of hand tubewells, food crops, soil, plants etc. for the detection of arsenic using low cost portable devices involving simple technique, setup as well as robustness of the instrument is the need of the hour and the group is involved in such work for almost a decade.

Sequential Injection-Hydride Generation-Inductive Coupled Plasma Mass Spectroscopy(SI-HG-ICPMS)



SI-HG-ICPMS system calibration As species at different concentration

 

Liquid Chromatography-UV photo decomposition-Hydride Generation- Inductive  Coupled Plasma Mass Spectroscopy

(LC-UV-HG-ICPMS)

 

 

LC-UV-HG-ICPMS system calibration for a mixture of various As species at different concentration, Limit of Detection (LOD): 17.7 As(III), 32.1 As(V), 14.5 dimethylarsinic acid (DMA), 19.2 monomethylarsonic acid (MMA) , 19.2 ng/L arsenobetaine (AsB) respectively

 


Distribution As species in 4 different rice samples collected from As affected areas measured using hydride generation-ICPMS technique

 

Education:

Currently working as a Postdoctoral Research fellow in the Department of Chemistry & Biochemistry of University of Texas at Arlington since March 2007.

Ph.D of Science from School of Environmental Studies, Jadavpur University, Kolkata, India, 2007.

    Thesis “Situation of groundwater arsenic contamination problem and human sufferings in West Bengal-India”

M.Sc (Inorganic Chemistry), Jadavpur University, Kolkata, 2001

B.Sc (Chemistry Honours), Utkal University, Orissa, 1997

 

Achievements

  1. National Eligibility Test for Lectureship award in June 2000 conducted jointly by CSIR-UGC.

  2. Awarded outstanding presenter in a National Conference on Environment Education for Sustainable Lifestyle, 10th-11th February 2006, organized by Patna Womens College, Patna, Bihar, India.

  3. Attended international conference “Arsenic Developing Country’s Perspective on Health, Water& Environmental Issues” February 15-17, 2004, Dhaka, Bangladesh and presented a paper on “Increasing trend in hand tube-wells and arsenic concentration in affected areas of WestBengal, India : A future Danger”.

  4. Attended joint Annual meeting and Exposition conducted by Geological Society of America on 5–9 October 2008, in Houston, Texas and presented a oral presentation on “A Green Fieldable Analyzer for Measuring Arsenic In Environmental Samples”

  5. Invited speaker of Columbia University's Superfund Basic Research Program - Columbia SBRP Seminar Series, December 15th, 2008 and presented a talk on . "Groundwater Arsenic Contamination: An Overview on Magnitude of Calamity and Some Analytical Approaches for its Trace Level Detection in Environmental Samples".
     

Publications

  1. Maather F. Sawalha, Mrinal K. Sengupta , Shin-Ichi Ohira, Ademola D. Idowu,Thomas E. Gill, Lila Rojo, Melanie Barnes, Purnendu K. Dasgupta. Measurement of soil/dust arsenic by gas phase chemiluminescence. Talanta, 2008, 77, 372–379.

  2. E. Sanz, R. Munoz-Olivas, C. Camara, M. K Sengupta, S. Ahamed. Arsenic speciation in rice, straw, soil, hair and nails samples from the arsenic-affected areas of Middle and Lower Ganga plain. Journal of Environmental Science and Health Part A, 2007, 42, 1–11.

  3. U.K.Chawdhury, B. Biswas, M.M. Rahman, A.B. Goswami, B. Das, B. Nayak, A. Pal, M.K. Sengupta, S. Ahamed, A. Hossain, G. Basu, T. Roychowdhury, D. Das. Status of groundwater arsenic contamination in the state West Bengal, India: A 20 year study report. D. Chakraborti. Molecular Nutrition & Food Research. (in press).

  4. M. K. Sengupta, M. A. Hossain, A. Mukherjee, S. Ahamed, B. Das, B. Nayak, A Pal, and D. Chakraborti. Arsenic Burden of Cooked Rice: Traditional and modern methods. Journal of Food and Chemical Toxicology, 2006, 44, 1823–1829.

  5. Mrinal Kumar Sengupta, Amitava Mukherjee, Sad Ahamed, Md. Amir Hossain, Bhaskar Das, Bishwajit Nayak, A. B. Goswami, Dipankar Chakraborti. Comment on Limited temporal variability of arsenic concentrations in 20 wells monitored for 3 years in Araihazar, Bangladesh. Environmental Science & Technology, 2006, 40(5), 1714–1715.

  6. Mrinal Kumar Sengupta, Amitava Mukherjee, Md. A. Hossain, Sad Ahamed, Mohammad M. Rahman, Dilip Lodh, Uttam K. Chowdhury, Bhajan K. Biswas, Biswajit Nayak, Bhaskar Das, Kshitish C. Saha, Dipankar Chakraborti, Subhash C. Mukherjee, Garga Chatterjee, Shyamapada Pati, Rabindra N. Dutta, Quazi Quamruzzaman. Groundwater Arsenic Contamination in Ganga – Padma – Meghna - Old Brahmaputra Plain. Archives of Environmental Health, November 2003, 58 (11), 701–702.

  7. M. Amir Hossain, Amitava Mukharjee, Mrinal Kumar Sengupta, Sad Ahamed, Bhaskar Das, Bishwajit Nayak, Mohammad Mahmudur Rahman, and Dipankar Chakraborti. Million Dollar Arsenic Removal Plants In West Bengal, India: Useful Or Not? Water Quality Research Journal of Canada, 2006, 41 (2), 216–225.

  8. A. Mukherjee, M. K Sengupta, S. Ahamed, Md. A. Hossain, B. Das, B. Nayak, M. M. Rahman, D. Chakraborti. Groundwater Arsenic Contamination: a global perspective with special emphasis to Asian countries. Journal of Health, Population and Nutrition (JHPN), Special issue on Arsenic, June 2006,  142–163.

  9. S. Ahamed, M. K Sengupta, S. C. Mukherjee, S. Pati, A. Mukherjee, M. A. Hossain, B Das, B. Nayak, A. Zafar, S. Kabir, S. T. Islam, Q. Quamruzzaman, M. M. Rahman, D. Chakraborti. An eight-year study report on groundwater arsenic contamination and health effect in Eruani village, Bangladesh and an approach for its mitigation. Journal of Health, Population and Nutrition (JHPN). Special issue on Arsenic, June 2006, 129–141.

  10. S. Ahamed, M. K Sengupta, A. Mukherjee, M. A. Hossain, B Das, B. Nayak, A. Pal, S. C. Mukherjee, S. Pati, R. N. Dutta, Adreesh Mukherjee, R Srivastava and D. Chakraborti. Groundwater arsenic contamination in middle Ganga plain, Uttar Pradesh-India: A future Danger? Science of the Total Environment, 2006, 370, 310–322.

  11. Groundwater arsenic contamination and its health effects in Ganga-Meghna-Brahmaputra (GMB) Plain and its surroundings: a nineteen years study. S Ahamed, A Mukherjee, B Nayak, A Pal, M K Sengupta, M A Hossain, B Das, D Chakraborti. Chinese Journal of Endemiology 2007, 26, 1, 43–47.

  12. Sad Ahamed, Amitava Mukharjee, Mrinal Kumar Sengupta, M. Amir Hossain, Bhaskar Das, Bishwajit Nayak,Arup Pal, Subhash Chandra Mukherjee, Shyamapada Pati, Rathindra Nath Dutta, Kshitish Chandra Saha, Quazi Quamruzzaman And Dipankar Chakraborti, Groundwater arsenic contamination and its health effects in Ganga-Meghna-Brahmaputra (GMB) plain and its surroundings. Trace elements in Medicine, May 2007 (in press).

  13. B. Nayak, M.A. Hossain, Mrinal Kumar Sengupta, S. Ahamed, B. Das, A. Pal, and A. Mukherjee. Adsorption studies with arsenic onto ferric oxide gel in reducing environment: effect of matrix and speciation. Water Quality Research Journal, Canada, 2006, 41, 3, 333–340.

  14. M. Amir Hossain, Mrinal Kumar Sengupta, Sad Ahamed, Mohammad Mahmudur Rahman, Debapriya Mondal, Dilip Lodh, Bhaskar Das, Bishwajit Nayak, Bimal K. Roy, Amitava Mukherjee, Dipankar Chakraborti. Ineffectiveness and Poor Reliability of Arsenic Removal Plants in West Bengal, India. Environmental Science & Technology, 2005, 39, 4300–4306.

  15. Mohammad Mahmudur Rahman, Mrinal Kumar Sengupta, Sad Ahamed, Uttam Kumar Chowdhury, Bhaskar Das, Md. Amir Hossain, Dilip Lodh, Kshitish Chandra Saha, Shyamal Kanti Palit, Dipankar Chakraborti. A detailed study of the arsenic contamination of groundwater and its impact on residents in Rajapur village of the Domkal block, district Murshidabad, West Bengal, India. Bulletin of the World Health Organization, 2005, 83(1), 49–57.

  16. Amitava Mukherjee, Mrinal Kumar Sengupta, Md. Amir Hossain, Sad Ahamed, Dilip Lodh, Bhaskar Das, Bishwajit Nayak, Khitish Chandra Saha, Subhash Chandra Mukherjee, Shymapada Pati, Rabindra Nath Dutta, Garga Chatterjee, Dipankar Chakraborti. Are some animals more equal than others? Toxicology. 2005, 208(1), 165–169.

  17. Mohammad Mahmudur Rahman, Mrinal Kumar Sengupta, Sad Ahamed, Uttam Kumar Chowdhury, Md. Amir Hossain, Bhaskar Das, Dilip Lodh, Kshitish Chandra Saha, Shymapada Pati, Imrul Kaies, Ajoy Kishore Barua, Quazi Quamruzzaman and Dipankar Chakraborti. The magnitude of arsenic contamination in groundwater and its health effects to the inhabitants of the Jalangi one of the 85 arsenic affected blocks in West Bengal, India. Science of The Total Environment, 338 (3), 189–200.

  18. Mohammad Mahmudur Rahman, Mrinal Kumar Sengupta, Sad Ahamed, Uttam Kumar Chowdhury, Dilip Lodh, Md. Amir Hossain, Bhaskar Das, Kshitish Chandra Saha, Imrul Kaies, Ajoy Kishore Barua, Quazi Quamruzzaman, Dipankar Chakraborti. Status of groundwater arsenic contamination and human suffering in a Gram Panchayet (cluster of villages) in Murshidabad, one of the nine arsenic affected districts in West Bengal-India: A semi-microlevel study. Journal of Water and Health, 2005, 3 (3), 283–296.

  19. Amitava Mukherjee, Mrinal Kumar Sengupta, Sad Ahamed, M. Amir Hossain, Bhaskar Das, Bishwajit Nayak, and Dipankar Chakraborti. Comment on Reliability of a Commercial Kit to Test Groundwater for Arsenic in Bangladesh. Environmental Science & Technology, 2005, 39, 5501–5502.

  20. Mohammad Mahmudur Rahman, Mrinal Kumar Sengupta, Subhash Chandra Mukherjee, Shymapada Pati, Sad Ahamed, Dilip Lodh, Bhaskar Das, M. Amir Hossain, Bishwajit Nayak, Kshitish Chandra Saha, Shyamal Kanti Palit, Imrul Kaies, Ajoy Kishore Barua, Khondaker Abdul Asad, Amitava Mukherjee and Dipankar Chakraborti. Murshidabad - one of the nine groundwater arsenic affected districts of West Bengal, India. Part I: Magnitude of contamination and population at risk. Journal of Toxicology - Clinical Toxicology, 2005, 43, 823–834.

  21. Subhash Chandra Mukherjee, Kshitish Chandra Saha, Shymapada Pati, Rathindra Nath Dutta, Mohammad Mahmudur Rahman, Mrinal Kumar Sengupta, Sad Ahamed, Dilip Lodh, Bhaskar Das, M. Amir Hossain, Bishwajit Nayak, Shyamal Kanti Palit, Imrul Kaies, Ajoy Kishore Barua, Khondaker Abdul Asad, Amitava Mukherjee and Dipankar Chakraborti. Murshidabad - one of the nine groundwater arsenic affected districts of West Bengal, India. Part II: dermatological, neurological and obstetric findings. Journal of Toxicology - Clinical Toxicology, 2005, 43, 835–848.

  22. Dipankar Chakraborti, Mrinal Kumar Sengupta, Mohammad Mahmudur Rahman, Sad Ahamed, Uttam Kumar Chowdhury, Subhash Chandra Mukherjee, Shyamapada Pati, Kshitish Chandra Saha, R.N. Dutta, Quazi Quamruzzaman. Groundwater arsenic contamination and its health effects in the Ganga-Meghna-Brahmaputra plain. Journal of Environment Monitoring, 2004, 6, 75N–83N.

  23. Dipankar Chakraborti, Sad Ahamed, Mohammad M. Rahman, Mrinal Kumar Sengupta, Dilip Lodh, Bhaskar Das, Mohammad Amir Hossain, Subhash C. Mukherjee, Shyamapada Pati. Response to comments on “Risk of arsenic contamination in groundwater” Environmental Health Perspectives, 2004, 12(1), A19–A21.

  24. Mohammad Mahmudur Rahman, Badal Kumar Mandal, Tarit Roy Chowdhury, Mrinal Kumar Sengupta, Uttam Kumar Chowdhury, Dilip Lodh, Chitta Ranjan Chanda, Gautam Kumar Basu, Subhash Chandra Mukherjee, Kshitish Chandra Saha and Dipankar Chakraborti. Arsenic Groundwater Contamination and Sufferings of People in North 24-Parganas, One of the Nine Arsenic Affected Districts of West Bengal, India: The Seven Years Study Report. Environmental Science & Health, 2003, A38 (1), 27–59.

  25. Subhash Chandra Mukherjee, Mohammad Mahmudur Rahman, Uttam Kumar Chowdhury, Mrinal Kumar Sengupta, Dilip Lodh, Chitta Ranjan Chanda, Kshitish Chandra Saha and Dipankar Chakraborti. Neuropathy in Arsenic Toxicity from Groundwater Arsenic Contamination in West Bengal, India. Environmental Science & Health, 2003, A38(1), 165–183.

  26. Uttam Kumar Chowdhury, Mohammad Mahmudur Rahman, Mrinal Kumar Sengupta, Dilip Lodh, Chitta Ranjan Chanda, Shibtosh Roy, Quazi Quamruzzaman, Hiroshi Tokunaga, Masanori Ando and Dipankar Chakraborti. Pattern of Excretion of Arsenic Compounds [Arsenite, Arsenate, MMA (V), DMA (V)] in Urine of Children Compared to Adults from an Arsenic Exposed Area in Bangladesh. Environmental Science & Health, 2003, A38(1), 87–113.

  27. Dipankar Chakraborti, Subhash C. Mukherjee, Shyamapada Pati, Mrinal Kumar Sengupta, Mohammad M. Rahman, Uttam K. Chowdhury, Dilip Lodh, Chitta R. Chanda, Anil K. Chakraborti, Gautam K. Basu. Arsenic Groundwater Contamination in Middle Ganga Plain, Bihar, India: A Future Danger? Environmental Health Perspectives, 2003, 111(9), 1194–1201.

  28. Dipankar Chakraborti, Subhash Chandra Mukherjee, Khitish Chandra Saha, Uttam Kumar Chowdhury, Mohammad Mahmudur Rahman, Mrinal Kumar Sengupta. Arsenic Toxicity from Homeopathic Treatment. Journal of Toxicology: Clinical Toxicology, 2003, 41(7), 963–967.

  29. Dipankar Chakraborti, Mohammad Mahmudur Rahman, Kunal Paul, Uttam Kumar Chowdhury, Mrinal Kumar Sengupta, Dilip Lodh, Chitta Ranjan Chanda, Kshitish Chandra Saha, Subhash Chandra Mukherjee. Arsenic calamity in India and Bangladesh sub-continent – whom to blame? Talanta, 2002, 58, 3–22.

  30. Mohammad Mahmudur Rahman, Debapriyo Mukherjee, Mrinal Kumar Sengupta, Uttam Kumar Chowdhury, Dilip Lodh, Bhajan Kumar Biswas, Chitta Ranjan Chanda, Shibtosh Roy, Md. Selim, Quazi Quamruzzaman, Abul Hasnat Milton, S. M. Shahidullah, Md. Tofizur Rahman, Dipankar Chakraborti. Effectiveness and Reliability of Arsenic Field Testing Kits: Are the Million Dollar Screening Projects Effective or Not! Environmental Science & Technology, 2002, 36, 5385–5394.

 

Chapter in Books

  1. Mohammad Mahmudur Rahman, Mrinal Kumar Sengupta, Uttam Kumar Chowdhury, Dilip Lodh, Bhaskar Das, Sad Ahamed, Debapriya Mandal, Md. Amir Hossain, Subhash Chandra Mukherjee, Shymapada Pati, Kshitish Chandra Saha, Dipankar Chakraborti. Arsenic contamination incidents round the world. Book: Managing Arsenic in the Environment: From Soil to Human Health, Editor : Prof Ravi Naidu, Euan Smith, Gary Owens, Prasun Bhattacharya, Peter Nadebaum, CSIRO publishing, Australia. 2006, 3–30.

  2. B. Das, B.Nayak, A. Pal, S. Ahamed, M.A.Hossain, M.K.Sengupta, M.M.Rahman, S.Maity, K.C. Saha, D. Chakraborti, S.C. Mukherjee, A. Mukherjee, S. Pati, R.N. Dutta & Q. Quamruzzaman. Groundwater arsenic contamination and its health effects in the Ganga – Meghna – Brahmaputra plain. Book: ISGSD Special Publication 1. Groundwater for Sustainable Development- Problems, Perspectives and Challenges. Editors: Prosun Bhattacharya, A L Ramanathan, Jochen Bundschuh, A K Keshari and C Chandrasekharan. Balkema Book (Taylor & Francis). 2008, 257–269.

  3. D. Chakraborti, B. Das, B. Nayak, A. Pal, M.M. Rahman, M.K. Sengupta, M.A. Hossain, K.C. Biswas, M. Sahu, K.C. Saha, S.C. Mukherjee, S. Pati, R.N. Dutta & Q. Quamruzaman. Groundwater arsenic contamination and its adverse health effects in the Ganga-Meghna-Brahmaputra Plain. Book: Arsenic calamity of groundwater in Bangladesh: Contamination in water, soil & plants. Edited by: Kingshuk Roy. Nihon University, Japan. 2008, 13–58

  4. Mohammad Mahmudur Rahman, Kunal Paul, Uttam Kumar Chowdhury, Mrinal Kumar Sengupta, Dilip Lodh, Gautam Kumar Basu, Chitta Ranjan Chanda, Shibtosh Roy, Ranajit Das, Quazi Quamruzzaman, Dipankar Chakraborti. Groundwater Arsenic Contamination and Human Suffering in Bangladesh and West Bengal, India. Book: Strategic Management of Environmental and Socio-economic Issues. A handbook: Editted by Liu, C.Q., Zhao, Z, Xiao, T and Guha, J (coordinators), Guizhou Science and Technology Publishing House, Guiyang, China. 2003, 102–111.

  5. Dipankar Chakraborti, Mrinal Kumar Sengupta, Mohammad Mahmudur Rahman, Uttam Kumar Chowdhury, Dilip Lodh, Chitta Ranjan Chanda, Gautam Kumar Basu, Subhash Chandra Mukherjee, Kshitish Chandra Saha, Groundwater Arsenic Exposure in India, Book: Arsenic Exposure and Health Effects, Edited by W.R.Chappell, C.O.Abernathy, R.L.Calderon,; Publisher: Elsevier science, Amsterdam-Lausanne-New York-Oxford-Tokyo. 2003, 3–24.

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