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| Abstract Submission No. | ABS-2022-05-0103 |
| Title of Abstract | Determination of Bioaccumulation in marine ecosystem by Laser Induced Breakdown Spectroscopy |
| Authors | Della Thomas*, Prof. S. Surendran, Prof. Nilesh J. Vasa |
| Organisation | Indian Institute of Technology (IIT) Madras |
| Address | Room No. 320, Sabarmati Hostel, IIT P.O., IIT Madras Chennai, Tamil Nadu, India Pincode: 600036 Mobile: 8939404699 E-mail: della.thomas.mec@gmail.com |
| Country | India |
| Presentation | Oral |
| Abstract | There has been a recent widespread interest in the application of Laser Induced Breakdown Spectroscopy (LIBS) for the analysis of biological samples by the research community. LIBS technique consists of analysis of the spectral emission from laser induced plasma. It can provide an insight into the chemical composition of sample in any state. In contrast with other techniques, LIBS possesses many advantages. Few benefits of LIBS such as the remote analysis capability, minimum sample preparation required as well as quantitative measurement of minor elements make it an attractive method for analysis [1]. Quantitative elemental composition of Spirulina, a blue green algae (which are used as a dietary supplement), have been estimated with LIBS [2]. LIBS has also been employed for the determination of accumulation of toxic metal ions in T. minutus and Chlamydomonas species [3]. Strontium (Sr) or Calcium (Ca) is taken up by marine species to strengthen their shells, tissues etc. Detection of Strontium in marine algae by using LIBS has been reported [4]. This is relevant as Strontium is an ecological and nuclear waste indicator. Hence, it can be seen that there is a considerable interest in the elemental analysis of marine algal species. In this study, we have carried out the elemental composition analysis of marine algal species such as Chlorella vulgaris, Nitzchia sigma and Chaetoslorenzianus. The major elements detected were Sodium (Na), Potassium (K), Magnesium (Mg) and Calcium (Ca). It was also possible to determine Strontium (Sr) in trace levels. This study is a preliminary attempt to quantify the elements of marine algae in natural state, so that it serves as a database for the study of variations in algal composition due to bioaccumulation. This will also give an insight into the marine ecosystem condition. References: 1. J.P. Singh and S.N. Thakur, 'Laser Induced Breakdown Spectroscopy', Elsevier, 1st edition (2007) 2. S. Zivkovic et al., 'Spectrochemical analysis of powdered biological samples using transversely excited atmospheric carbon dioxide laser plasma excitation', Spectrochimica Acta Part B, 128, 22 (2017) 3. Porizka et al, 'Application of Laser Induced Breakdown spectroscopy to the analysis of algal biomass for industrial biotechnology', Spectrochimica Acta Part B, 74-75, 169 (2012). 4. Lin Niu et al., 'Direct determination of Strontium in marine algae samples by Laser Induced Breakdown Spectroscopy', Applied Spectroscopy, 56, 1511 (2002) |