Heavy metal detection in mulberry leaves: Laser-induced breakdown spectroscopy data

Liang Yang; Liuwei Meng; Huaqi Gao; Jingyu Wang; Can Zhao; Meimei Guo; Yong He; Lingxia Huang

doi:10.1016/j.dib.2020.106483

Heavy metal detection in mulberry leaves: Laser-induced breakdown spectroscopy data

Data Brief. 2020 Nov 2:33:106483. doi: 10.1016/j.dib.2020.106483. eCollection 2020 Dec.

Authors

Liang Yang¹, Liuwei Meng², Huaqi Gao¹, Jingyu Wang¹, Can Zhao¹, Meimei Guo¹, Yong He³, Lingxia Huang¹

Affiliations

¹ College of Animal Sciences, Zhejiang University, Hangzhou 310058, PR China.
² Research and Development Department, Hangzhou Goodhere Biotechnology Co., Ltd., Hangzhou 311100, PR China.
³ College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, PR China.

Abstract

Five copper or chromium stress levels were carried out on mulberry leaf, and 20 samples were collected for each metal stress level. A total of 100 samples (copper or chromium) were processed into uniform pressed pellet. The mulberry leaf pellet was placed on a sample platform of laser-induced breakdown spectroscopy (LIBS) system. A laser was used to ablate the sample pellet and generate the emission lines, the intensity and delay time of laser ablation were 80 mJ and 4 μs respectively. To reduce the acquisition errors, 16 different positions of each sample were ablated for 5 accumulation. Then, 80 spectra were collected per sample and the average of them was considered as the sample spectrum for subsequent analysis. Finally, a total of 200 spectra of copper and chromium in mulberry leaves with a wavelength range of 219-877 nm were obtained for calibration analysis [1].

Keywords: Chromium; Copper; Heavy metal; Laser-induced breakdown spectroscopy; Mulberry leaf.