物理学报Issue(9)：1-5,5.DOI:10.7498/aps.63.095203
基于飞秒激光等离子体丝诱导击穿光谱探测土壤重金属Cr元素含量
Detection of heavy metal Cr in soil by the femtosecond filament induced breakdown sp ectroscopy
摘要
Abstract
In this paper, the element content detection of heavy metal Cr in soil is investigated experimentally by femtosecond filament induced breakdown spectroscopy (FIBS). The plasma filament length is measured using the fluorescence method, and the spatial distribution of Cr 425.5 nm spectral intensity is obtained at lens focal lengths 150 mm and 1000 mm. A calibration curve of the heavy metal element Cr in the soil is obtained based on experimental results. Results demonstrate that the relative deviation of the quantitative analytic result from the standard value is smaller than 5%, and the detection limit of Cr in soil is 7.85 ppm at the laser repetition rate 1 kHz. The femtosecond laser filaments induced breakdown spectroscopy is entirely feasible for quantitative detection of heavy metal element Cr in the soil.关键词
飞秒激光成丝/击穿光谱/重金属Cr/探测限Key words
femtosecond laser filament/laser induced breakdown spectroscopy/heavy metal Cr/limit of detection引用本文复制引用
高勋,杜闯,李丞,刘潞,宋超,郝作强,林景全..基于飞秒激光等离子体丝诱导击穿光谱探测土壤重金属Cr元素含量[J].物理学报,2014,(9):1-5,5.基金项目
国家自然科学基金(批准号:11074027,61178022,11211120156)、吉林省科技厅项目(批准号:20100168,20111812,201215132)和教育部博士点基金-新教师(批准号:20112216120006)资助的课题 （批准号:11074027,61178022,11211120156）
