Determination of Trace Available Heavy Metals in Soil Using Laser-Induced Breakdown Spectroscopy Assisted with Phase Transformation Method

Rongxing Yi, Xinyan Yang, Ran Zhou, Jiaming Li, Huiwu Yu, Zhongqi Hao, Lianbo Guo, Xiangyou Li, Yongfeng Lu, Xiaoyan Zeng

Research output: Contribution to journalArticle

22 Scopus citations

Abstract

To detect available heavy metals in soil using laser-induced breakdown spectroscopy (LIBS) and improve its poor detection sensitivity, a simple and low cost sample pretreatment method named solid-liquid-solid transformation was proposed. By this method, available heavy metals were extracted from soil through ultrasonic vibration and centrifuging and then deposited on a glass slide. Utilization of this solid-liquid-solid transformation method, available Cd and Pb elements in soil were detected successfully. The results show that the regression coefficients of calibration curves for soil analyses reach to more than 0.98. The limits of detection could reach to 0.067 and 0.94 ppm for available Cd and Pb elements in soil under optimized conditions, respectively, which are much better than those obtained by conventional LIBS.

Original languageEnglish (US)
Pages (from-to)7080-7085
Number of pages6
JournalAnalytical chemistry
Volume90
Issue number11
DOIs
StatePublished - Jun 5 2018

ASJC Scopus subject areas

  • Analytical Chemistry

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