Tracking the Transformation of Nanoparticulate and Ionic Silver at Environmentally Relevant Concentration Levels by Hollow Fiber Flow Field-Flow Fractionation Coupled to ICPMS

Zhi Qiang Tan, Yong Guang Yin, Xiao Ru Guo, Meseret Amde, Myeong Hee Moon, Jing Fu Liu, Gui Bin Jiang

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

It is a great challenge to monitor the physical and chemical transformation of nanoparticles at environmentally relevant concentration levels, mainly because the commonly used techniques like dynamic light scattering and transmission electron microscopy are unable to characterize and quantify trace level nanoparticles in complex matrices. Herein, we demonstrate the on-line coupled system of hollow fiber flow field-flow fractionation (HF5), minicolumn concentration, and inductively coupled plasma mass spectrometry (ICPMS) detection as an efficient approach to study the aggregation and chemical transformation of silver nanoparticles (AgNPs) and ionic Ag species in the aqueous environment at ng/mL levels. Taking advantage of the in-line dialysis of HF5, the selective capture of Ag(I) species by the resin in minicolumn, and the high selectivity and sensitivity of ICPMS detection, we recorded the aggregation of 10 ng/mL AgNPs in complex matrices (e.g., NOM, Na+/Ca2+), revealing an interesting tiny AgNPs formation process of photoreduction of trace level Ag(I) that is different from larger AgNPs generated at high concentration of Ag(I) by accurate characterization and respectively identifying and quantifying new thiol-complexed Ag(I) and residual Ag(I) in the intertransformation of Ag(I) and AgNPs in domestic wastewater by simultaneously detecting the S and Ag signals via ICPMS.

Original languageEnglish
Pages (from-to)12369-12376
Number of pages8
JournalEnvironmental Science and Technology
Volume51
Issue number21
DOIs
Publication statusPublished - 2017 Nov 7

Fingerprint

Inductively coupled plasma mass spectrometry
Fractionation
Silver
flow field
silver
Flow fields
fractionation
mass spectrometry
Nanoparticles
plasma
Fibers
Agglomeration
matrix
Dialysis
thiol
light scattering
Dynamic light scattering
Light transmission
Sulfhydryl Compounds
transmission electron microscopy

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Environmental Chemistry

Cite this

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title = "Tracking the Transformation of Nanoparticulate and Ionic Silver at Environmentally Relevant Concentration Levels by Hollow Fiber Flow Field-Flow Fractionation Coupled to ICPMS",
abstract = "It is a great challenge to monitor the physical and chemical transformation of nanoparticles at environmentally relevant concentration levels, mainly because the commonly used techniques like dynamic light scattering and transmission electron microscopy are unable to characterize and quantify trace level nanoparticles in complex matrices. Herein, we demonstrate the on-line coupled system of hollow fiber flow field-flow fractionation (HF5), minicolumn concentration, and inductively coupled plasma mass spectrometry (ICPMS) detection as an efficient approach to study the aggregation and chemical transformation of silver nanoparticles (AgNPs) and ionic Ag species in the aqueous environment at ng/mL levels. Taking advantage of the in-line dialysis of HF5, the selective capture of Ag(I) species by the resin in minicolumn, and the high selectivity and sensitivity of ICPMS detection, we recorded the aggregation of 10 ng/mL AgNPs in complex matrices (e.g., NOM, Na+/Ca2+), revealing an interesting tiny AgNPs formation process of photoreduction of trace level Ag(I) that is different from larger AgNPs generated at high concentration of Ag(I) by accurate characterization and respectively identifying and quantifying new thiol-complexed Ag(I) and residual Ag(I) in the intertransformation of Ag(I) and AgNPs in domestic wastewater by simultaneously detecting the S and Ag signals via ICPMS.",
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Tracking the Transformation of Nanoparticulate and Ionic Silver at Environmentally Relevant Concentration Levels by Hollow Fiber Flow Field-Flow Fractionation Coupled to ICPMS. / Tan, Zhi Qiang; Yin, Yong Guang; Guo, Xiao Ru; Amde, Meseret; Moon, Myeong Hee; Liu, Jing Fu; Jiang, Gui Bin.

In: Environmental Science and Technology, Vol. 51, No. 21, 07.11.2017, p. 12369-12376.

Research output: Contribution to journalArticle

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T1 - Tracking the Transformation of Nanoparticulate and Ionic Silver at Environmentally Relevant Concentration Levels by Hollow Fiber Flow Field-Flow Fractionation Coupled to ICPMS

AU - Tan, Zhi Qiang

AU - Yin, Yong Guang

AU - Guo, Xiao Ru

AU - Amde, Meseret

AU - Moon, Myeong Hee

AU - Liu, Jing Fu

AU - Jiang, Gui Bin

PY - 2017/11/7

Y1 - 2017/11/7

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