摘要
基于自行研制的新型液体射流的激光诱导击穿光谱(LIBS)实验装置,研究了实验条件(如积分延时、激光能量等)对金属LIBS谱线强度的影响。实验获取了K2Cr2O7、Pb(NO3)2和CdBr2水溶液样品在532nm激光激发下的等离子体发射光谱,标识了Cr、Pb和Cd等重金属元素的特征谱线,获得Cr、Pb、Cd的探测限约为0.32、15.6、57.6mg/L,展示了液体射流LIBS用于水体中重金属快速检测的能力。
The effects of the experimental conditions(integration delay,laser energy and so on) on the strength of metal LIBS(laser-induced breakdown spectroscopy) spectra are investigated using a self-developed new liquid jet by LIBS.The plasma emission spectra of K2Cr2O7,Pb(NO3) and CdBr2 aqueous solutions at 532 nm laser excitation is obtained.And the characteristic spectral lines of toxic metals Cr,Pb and Cd are identified.It is found that the detection limits of Cr,Pb and Cd are respectively about 0.32,15.6 and 57.6 mg/L.The results unfold the rapid detection capability of the liquid jet by LIBS on toixc metal in water.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2012年第2期210-215,共6页
Chinese Journal of Lasers
基金
中国科学院合肥物质科学研究院院长基金(Y03AG21136)资助课题
关键词
光谱学
液体射流
激光诱导击穿光谱
重金属
探测限
spectroscopy
liquid jet injection
laser-induced breakdown spectroscopy
heavy metal
detection limit