Abstract:

In this study, the toxic element concentrations of the Marmara Sea seafood were determined by the techniques of LIBS (Laser-Surved Failure Spectroscopy) and ICP-OES (Inductive Combined Plasma-Optical Emission Spectrometer). For the support of the results obtained by the LIBS technique, the same sediment samples were also analyzed by the ICP-OES method. The results are compared. Comparing the results obtained from both methods, the availability of the LIBS method was shown on sedimentary samples. Because the results obtained with ICP-OES and the results obtained with LIBS are parallel to each other. The LIBS method, with advantages such as fast results from all other traditional methods and the shortness of the pre-preparation process, is an important and practical technique for the determination of natural and anthropogenic elements. In the analysis results by the ICP-OES method, the quantities of the elements are given by ppm, while the analysis results by the LIBS method are given by only percentage.  The concentrations of Zn, Mn, Co, Cr and Cu obtained by the LIBS method vary according to each region. According to the results of the ICP-OES analysis in this study, Zn (42.2-111.7 ppm), Mn (163.2-581.1 ppm), Co (37.14-65.87 ppm), Cr (42.5-112.6 ppm), Cu (5.71-24.33 ppm), Ni (98.20-175.55 ppm), Al (16568.8-24850.9 ppm), Fe (20936.9-37397.9 ppm), Na (5223.4-12384.7), Mg (4800.4-7385.3 ppm), K (3290.8-5582.0), Ca (42405.2-154577. It is 0 ppm. The results of the LIBS analysis showed it parallel and it was obtained as Zn (% 0-22), Mn (% 0-28), Co (% 0-21), Cr (% 0-23), Cu (% 0-19), Ni (% 0-2), Al (% 67-78), Fe (% 94-95), Na (% 70-87), Mg (% 82-90), K (% 85-94), Ca (% 66-80). The LIBS method is an important technique for identifying elements enriched with anthropogenic factors and the elements derived from natural processes. The LIBS method can be used to determine the source of elements in marine or ground environments. Additionally, the LIBS method has also shown significant results in the determination of toxic elements such as Mn, Cr, Co and Cu, increasing in the sea sediment with anthropogenic factors.

Keywords:

Abstract:

In this work, the LIBS (Laser Induced Breakdown Spectroscopy) and ICP-OES (Inductively Coupled Plasma-Optical Emission Spectrometer) technique applied to the determination of total concentration of some elements (Fe, Zn, Al, Mn, Co, Cr, Cu, Ni, Na, Mg, K, Ca) derived from soil samples of Marmara Sea. To support to the technique, LIBS data were compared with data have been obtained on the same soil samples by application of Conventional Inductively Coupled Plasma Spectroscopy (ICP-OES). The similarity of results obtained between the two sets of data suggested the potential applicability of the LIBS technique to the measurement of elements in soils. According to the study, it has been seen that the elements determined by ICP-OES analysis also determined by LIBS method. It has the advantages of being faster than other traditional methods, being portable, having low analysis costs, not being damaged and re-used during the analysis and short preparation period. However, the LIBS method is an important and practical technique for the determination of elements of natural and anthropogenic origin. In the analysis made by ICP-OES method, the amounts of the elements in ppm are determined, while the results of LIBS analysis show the presence of the element only in %. According to LIBS method, Zn, Mn, Co, Cr and Cu concentrations vary according to each region. In this study, according to ICP-OES analysis, Zn (42.2-111.7 ppm), Mn (163.2-581.1 ppm), Co (37.14-65.87 ppm), Cr (42.5-112.6 ppm), Cu (5.71-24.33 ppm), Ni ( 98.20-175.55 ppm), Al (16568.8-24850.9 ppm), Fe (20936.9-37397.9 ppm), Na (5223.4-12384.7), Mg (4800.4-7385.3 ppm), K (3290.8-5582.0) and Ca (42405.2-154577.0 ppm) ). LIBS analysis results showed that parallels Zn (0-22%), Mn (0-28%), Co (0-21%), Cr (0-23%), Cu (0-19%), Ni (%) 0-2), Al (67-78%), Fe (94-95%), Na (70-87%), Mg (82-90%), K (85-94%), Ca (66-%) 80). The LIBS method is an important technique for identifying elements enriched with anthropogenic factors and elements originating from natural processes. The LIBS method can be used to determine the source of elements in marine or terrestrial environments. In addition, the LIBS method; It has also shown important results in the determination of toxic elements such as Mn, Cr, Co and Cu which increase in marine sediment by anthropogenic factors.