Femtosecond laser filamentation-induced breakdown spectroscopy combined with chemometrics methods for soil heavy metal analysis

Optik ◽  
2022 ◽  
Vol 251 ◽  
pp. 168444
Shangyong Zhao ◽  
Muhammad Sher Afgan ◽  
He Zhu ◽  
Xun Gao
2020 ◽  
Vol 71 (8) ◽  
pp. 240-248
Kafeel Ahmad ◽  
Yongjun Yang ◽  
Zafar Iqbal Khan ◽  
Nimra Arshad ◽  
Tasneem Ahmad ◽  

The article is focused on estimation of Zinc in the roadside forages, and blood of buffaloes feeding on these forages. This study was carried out in Sargodha during December 2015 to January 2016 (winter) and May 2016 to June 2016 (summer). Five road sites (Mateela, Faisalabad roadside, Shaheenabad roadside, Bhalwal roadside and 50 chak) were selected from sampling of forages, soil and buffalo blood sample. Heavy metal analysis of all digested samples was done with atomic absorption spectrophotometer. Analysis of variance and correlation was done with two way ANOVA. This study regarding the accumulation of zinc in forages, soil and the buffalo blood would help the authorities to exactly determine the agents which are responsible for increasing pollution in the environment.

Gomathi K ◽  
Anna Sheba L

 Objective: Ulva reticulata is a marine edible green seaweed widely distributed along the coastal lines of India. The present study was designed to screen the phytochemicals and evaluate heavy metals content of U. reticulata collected from Rameshwaram, Tamil Nadu, India, in the perspective of assessing their therapeutic value and/or safety in relation to its uses.Method: The seaweed sample was subjected to extraction with solvents of different polarities (methanol, ethanol, acetone, chloroform, and petroleum ether) and screened for phytochemicals according to standard methods. Heavy metal analysis was also performed with the dried sample powder using inductively coupled plasma optical emission spectrophotometer (ICP-OES).Result: Preliminary phytochemical analysis revealed the presence of reducing sugar, proteins, flavonoids, glycosides, alkaloids, and anthraquinones. ICP-OES indicated the seaweed to contain relative amount of heavy metals in the order of iron (Fe) > chromium (Cr) > Zinc (Zn) > nickel (Ni) > copper (Cu) > lead (Pb) - cadmium (Cd) and is within the permissible limits set by the WHO/FAO, except Fe and Cr.Conclusion: The different solvent extracts of U. reticulata showed the presence of the number of phytochemicals. Furthermore, the present study has revealed the presence of heavy metals in U. reticulata which can be a representative picture of the dissolved metals in the aquatic phase.

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