APM OpenIR
Detection of nutritional and toxic elements in Pakistani pepper powders using laser induced breakdown spectroscopy
Rehan, I1; Rehan, K.2,3; Khan, M. Z.2; Sultana, S.4; Muhammad, R.2; Khan, H. U.5
2020-05-28
Source PublicationANALYTICAL METHODS
ISSN1759-9660
Volume12Issue:20Pages:2590-2598
AbstractIn the current study, we applied laser induced breakdown spectroscopy (LIBS) to determine the elemental distribution of nutritional and trace heavy metals in pepper powders available in Pakistan using the standard calibration curve of laser induced breakdown spectroscopic (CC-LIBS) technique. The samples were found to contain elements such as K, Ca, Mg, Na, Fe, Zn, Al, Pb, Cu, and Cr. In addition, we also identified the atmospheric H-alpha line of hydrogen in the spectra, which was used to estimate the electron number density. To achieve a highly sensitive LIBS system to determine the trace amounts of nutritional and toxic metals in the pepper powders and to achieve the best limit of detection, the LIBS system was optimized by studying the dependency of the LIBS signal intensity on laser irradiance, variation in spacing between the focusing lens and target, as well as on the gate width. To justify the results of the LIBS study, we also determined the concentration of similar (duplicate) peppers by digesting the samples in appropriate solvents using a standard method such as inductively coupled plasma-optical emission spectrometry (ICP-OES). The minimum detection limit was obtained for trace heavy metals from the calibration curves. The results of LIBS displayed noteworthy conformity with those acquired from the ICP-OES analysis. The results of both the techniques clearly revealed that K was the most abundant element in all the peppers, followed by Ca, Mg, Na, Fe, Al, Pb, Zn, Cu, and Cr. The relative accuracy of our LIBS system for different species as compared with the ICP technique was in the range of 0.08-0.3 at 2.5% error confidence. Conclusively, the present work demonstrated the suitability of the LIBS technique due to its rapid, non-destructive, and eco-friendly approach for food security.
DOI10.1039/d0ay00630k
WOS KeywordQUANTITATIVE-ANALYSIS ; SPECTRAL-ANALYSIS ; CROSS-VALIDATION
Language英语
WOS Research AreaChemistry ; Food Science & Technology ; Spectroscopy
WOS SubjectChemistry, Analytical ; Food Science & Technology ; Spectroscopy
WOS IDWOS:000537867200006
PublisherROYAL SOC CHEMISTRY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.apm.ac.cn/handle/112942/22798
Collection中国科学院武汉物理与数学研究所
Corresponding AuthorRehan, I
Affiliation1.Islamia Coll Univ, Dept Phys, Peshawar 25120, Pakistan
2.Fed Urdu Univ Arts Sci & Technol, Dept Appl Phys, Islamabad 44000, Pakistan
3.Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China
4.Islamia Coll Univ, Dept Chem, Peshawar 25120, Pakistan
5.BUITEMS, Dept Phys, Quetta, Pakistan
Recommended Citation
GB/T 7714
Rehan, I,Rehan, K.,Khan, M. Z.,et al. Detection of nutritional and toxic elements in Pakistani pepper powders using laser induced breakdown spectroscopy[J]. ANALYTICAL METHODS,2020,12(20):2590-2598.
APA Rehan, I,Rehan, K.,Khan, M. Z.,Sultana, S.,Muhammad, R.,&Khan, H. U..(2020).Detection of nutritional and toxic elements in Pakistani pepper powders using laser induced breakdown spectroscopy.ANALYTICAL METHODS,12(20),2590-2598.
MLA Rehan, I,et al."Detection of nutritional and toxic elements in Pakistani pepper powders using laser induced breakdown spectroscopy".ANALYTICAL METHODS 12.20(2020):2590-2598.
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