Rapid and nondestructive measurement of labile Mn, Cu, Zn, Pb and As in DGT by using field portable-XRF

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 城市与区域生态国家重点实验室

	Rapid and nondestructive measurement of labile Mn, Cu, Zn, Pb and As in DGT by using field portable-XRF
	Chen, Zheng ; Williams, Paul N. ; Zhang, Hao
刊名	ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS
	2013
卷号	15 期号:9 页码:1768-1774
通讯作者	Williams, PN
中文摘要	The technique of diffusive gradients in thin films (DGT) is often employed to quantify labile metals in situ; however, it is a challenge to perform the measurements in-field. This study evaluated the capability of field-portable X-ray fluorescence (FP-XRF) to swiftly generate elemental speciation information with DGT. Biologically available metal ions in environmental samples passively preconcentrate in the thin films of DGT devices, providing an ideal and uniform matrix for XRF nondestructive detection. Strong correlation coefficients (r > 0.992 for Mn, Cu, Zn, Pb and As) were obtained for all elements during calibration. The limits of quantitation (LOQ) for the investigated elements of FP-XRF on DGT devices are 2.74 for Mn, 4.89 for Cu, 2.89 for Zn, 2.55 for Pb, and 0.48 for As (unit: mu g cm(-2)). When Pb and As co-existed in the solution trials, As did not interfere with Pb detection when using Chelex-DGT. However, there was a significant enhancement of the Pb reading attributed to As when ferrihydrite binding gels were tested, consistent with Fe-oxyhydroxide surfaces absorbing large quantities of As. This study demonstrates the value of the FP-XRF technique to rapidly and nondestructively detect the metals accumulated in DGT devices, providing a new and simple diagnostic tool for on-site environmental monitoring of labile metals/metalloids.
收录类别	SCI
WOS记录号	WOS:000323352100014
公开日期	2014-06-04
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/7331]
专题	生态环境研究中心_城市与区域生态国家重点实验室
推荐引用方式 GB/T 7714	Chen, Zheng,Williams, Paul N.,Zhang, Hao. Rapid and nondestructive measurement of labile Mn, Cu, Zn, Pb and As in DGT by using field portable-XRF[J]. ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS,2013,15(9):1768-1774.
APA	Chen, Zheng,Williams, Paul N.,&Zhang, Hao.(2013).Rapid and nondestructive measurement of labile Mn, Cu, Zn, Pb and As in DGT by using field portable-XRF.ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS,15(9),1768-1774.
MLA	Chen, Zheng,et al."Rapid and nondestructive measurement of labile Mn, Cu, Zn, Pb and As in DGT by using field portable-XRF".ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS 15.9(2013):1768-1774.